Bob the Pleo Forums

Pleo Stuff => Pleo Hardware/Software => Topic started by: taoworm23 on April 27, 2015, 05:04:55 PM

Title: The Better Battery Thread
Post by: taoworm23 on April 27, 2015, 05:04:55 PM
Ok as most of us with Ugobes know, all stock batteries are fubar.
They are either flat out dead or won't hold a charge.
So I bought a refurbished battery from a seller in Italy.
The first one he sent was defective so he sent me a replacement.
The replacement battery works great and is advertised as being 2700mah but I knew this was not the case.
(http://s22.postimg.org/hzipp2uts/20150427_170815.jpg)

And with the green tape removed...
(http://s14.postimg.org/4tmrmsbxs/20150427_170907.jpg)


Hmmm "Join" brand batteries. ...
Never heard of em.

No name battery from China doesn't  look good...
I tested the ACTUAL mah and some were 1800mah some were 1200mah!
NONE of them were anywhere close to the claimed 2700mah capacity.

(The stock Ugobes battery's were worse at a advertised 750 mAh capacity. When tested the actual capacity was closer to 400mah.)

Now for the good news...
I can make pleo replacement battery's with a true 2500mah to 2700mah.
I call it The Ugobe Super Pack.
(Its a High mAh, Low Self Discharge ,  Low internal resistance battery)
Longest runtimes available with current NIMH battery technologies
Highest mAh battery for Pleo
--------------------------------------------------------------------------------------------------
Internal resistance measurement

Batteries can be modeled as a voltage source in series with a resistance. In practical terms internal resistance gives an indication of how well a battery can supply current to a load without the cell voltage dropping. Low internal resistance means low cell voltage drop under load. High internal resistance means high cell voltage drop under load. So if you are looking for a battery that can delivery high current to Pleo's motors,  you want a battery with low internal resistance.

NiMH batteries come in two flavors:  LSD and regular.  LSD is "Low Self-Discharge", which means long shelf-life (they won't lose much energy while sitting around unused), vs. normal NiMH's which go dead after a few months of sitting around. The original Ugobe battery's were not LSD.
-------------------------------------------------------------------------------------------------------------------------------------------------------
The specs on my new super battery are:

2642 mAh
47 mΩ Internal resistance
85% charge kept after 1 year of non use. (LSD battery)
Hours of runtime!

Would there be any interest for a battery like this on the forums?
If so I have some 3d parts to print. :)
Title: Re: The Better Battery Thread
Post by: grumpy on April 27, 2015, 06:45:11 PM
Would be an interesting product.

The questions would be about the cost and shipping.
Title: Re: The Better Battery Thread
Post by: kat on April 27, 2015, 08:16:59 PM
I think there would definitely be interest as you just can't get the egg batteries any more and they were the best alternative we had to the original Ugobe batteries.  Do you have any idea what the costs would be? 
Title: Re: The Better Battery Thread
Post by: Anakey on April 28, 2015, 10:39:57 AM
I have made a similar post in a different thread regarding batteries, i opened up one of the egg batteries to see what was inside it what looked like 4 phone batteries linked together in parallel would it not be better to try lithium ion batteries rather then NiMh ones?
Title: Re: The Better Battery Thread
Post by: Talon on April 28, 2015, 12:59:54 PM
I think you might have a market here, Taoworm. As others have said, it would boil down to costs of production and shipment. Also I think it might be useful to know if such a battery can be charged in the egg charging cradle or if it would be better to charge it using the old Ugobe cradle? Also don't forget that (possibly), your product may be handled by somebody younger than twelve and you'd want to be sure the battery can stand up to a little abuse without coming apart or having the casing crack or something. This really sounds exciting and I wish you well with developing it! Who knows? If this product goes over well, you could probably do something similar for the RB and provide the community with a slightly cheaper means of getting newer batteries.
Talon
Title: Re: The Better Battery Thread
Post by: taoworm23 on April 28, 2015, 04:16:26 PM
...Would it not be better to try lithium ion batteries rather then NiMh ones?

Not LiPo because;

- voltage is more appropriate (lipos may be too high, although plenty use them without the regulator mod).
- the batteries are not damaged if you leave them in Pleo left on accidently (unlike a lipo where you will write it off by over discharging)
- the NiMH are inherently safer (IMO) than having a lipo sitting in your expensive Pleo for weeks (most of us would not leave a fully charged lipo sitting in a gadget for weeks unattended, so why do it with a Pleo ?
- unlike standard NiMH, they do not self discharge quickly

 Lipos have a higher self discharge rate than my battery, namely 5% per month vs 1.25% for my battery.

You can't keep Lipo fully charged at room temperature because they degrade rapidly. If you want to store a Lipo fully charged then it has to be in the freezer otherwise at room temperature they need to be discharged down to 50% capacity.

(And the Ugobe Super Pack won't catch on fire if used wrong. ) :o

Except for the weight difference - I do not see any logic in utilising a Lipo instead of my Ugobe Super Pack for a Pleo battery.

 (My primary design intent is to provide the MOST mAh power more or less irrespective of when you use them. In other words, use Pleo ..... leave it for 6 months .... pick it up and it'll still have the same power and charge.)

OTH, the primary intent of the ordinary common-or-garden NiMH rechargeables  (NON low self discharge types) is to provide as much short term power as possible. Go back to one of this type 6 months after use and it'll be dead as a dodo. Not intended for long-term power storage.

My Ugobe Super Pack does NOT need to be fully discharged before charging. The Ugobe Super Pack has no memory effect unlike other NiMH batteries. (This means you can charge them with the stock Ugobe cradle.)

My Ugobe Super Pack has more advantages over standard NiMH's and Lipos in this application, so really its a no brainer...! ;)
Title: Re: The Better Battery Thread
Post by: Armand on February 26, 2016, 05:42:43 AM
Hi,

Yes please i would be very interested in getting a good replacement, would this be good for pleo RB as well?
Title: Re: The Better Battery Thread
Post by: Jaseypace on February 27, 2016, 08:32:53 AM
I have an original Pleo and am very interested in getting some batteries. My original one is useless.
Title: Re: The Better Battery Thread
Post by: scaledandtailed on May 05, 2016, 05:16:18 AM
 I would be interested as well, the specks look good and it looks like the best option so far however but as there have not been any updates   on the progress of this battery pack for over a year   is this still a valid proposal?
 Any updates on the progress of this project would be good.
 
 
Title: Re: The Better Battery Thread
Post by: Talon on May 05, 2016, 12:08:12 PM
Haven't seen taoworm in... forever. I think life may have gotten in the way.
Talon
Title: Re: The Better Battery Thread
Post by: scaledandtailed on May 06, 2016, 08:16:37 AM
 Hi talon.
 Havenít been   on here in a good while myself.   It was really a recent news letter from pleoworld that promped me to get off my but and get back on here.
 No idea what the news letter was about as  the screen reader doesnít  deal with  that any better than it does the website but it reminded me that I hadnít had a Bob the pleo news letter in a while so thought I should check in.
 Really pleased to see that a lot of the people who was here when I joined are still here.
  Hope youíre keeping well yourself.
  Shame nothing has come of this project as it looked like the best option since those white batteries with egg charger became unavailable. Really wish Iíd bought one when I had the chance.
   
 
 
 
Title: Re: The Better Battery Thread
Post by: Sammijay on July 03, 2016, 09:09:20 AM
Looks like the seller bought 6 2700mah batteries glued them in place and taped them back up together. He claimed it worked great I might try this myself
Title: Re: The Better Battery Thread
Post by: Ulman on July 12, 2016, 05:17:37 AM
I would be interested in buy some of these batteries for my ugobe pleos :)
Title: Re: The Better Battery Thread
Post by: taoworm23 on September 12, 2016, 10:00:19 AM
I'm still here. ;)
I could do a limited run one time only batch.
Who needs a battery?  8)
I need numbers so I can get everything in bulk.
Title: Re: The Better Battery Thread
Post by: Talon on September 13, 2016, 07:12:06 PM
Hi, Taoworm23! *Waves* Nice to see you here again! I would be interested in securing two of these batteries since I have two Ugobes.
I am a little tight on funds at the moment as I have an Aibo and a Genibo taking up my couch cushion change for the next two months. Also I only have the egg chargers and not an original Ugobe charging cradle. Will the egg charger work for your battery? Try to keep this thread bumped. I think there are plenty of people looking for a new battery source for their Ugobes. Good luck with this project!
Talon
Title: Re: The Better Battery Thread
Post by: aibo7m3 on September 13, 2016, 07:54:30 PM
I'm not in critical need of any new batteries (I have two egg chargers/batteries that work very well), but it might be nice to have a couple spares around if the price point is affordable enough.
Title: Re: The Better Battery Thread
Post by: loumsc on September 15, 2016, 11:22:58 AM
I am also interested as long as we can keep the cost reasonable. :dino-chase:
Title: Re: The Better Battery Thread
Post by: Anya on December 22, 2016, 11:55:08 AM
Considering buying a ugobe. Would definitely need one of your awesome batteries. How much would they be + shipping? Would you ship to uk?
Title: Re: The Better Battery Thread
Post by: tubbett on December 27, 2016, 01:20:40 AM
Hello :) i have just got my niece a pleo rb and I would be interested in having another battery, also im in the UK too!   happy xmas as well :)
Title: Re: The Better Battery Thread
Post by: Anya on September 01, 2018, 01:09:51 PM
Any news on the possibility of getting one of these super packs?
Title: Re: The Better Battery Thread
Post by: Anya on September 11, 2018, 01:59:06 PM
Found a few guides online and after a lot of battery hunting I reckon I can build one of these (maybe not as amazing but in the uk!)

I'll post my progress (for anybody still here) and the cost so that theoretically I could produce more.
Title: Re: The Better Battery Thread
Post by: mweed on September 12, 2018, 03:31:20 PM
It would be great if you can figure out on building them.  There have been a couple of others who have looked into it, but I have not seen much from them.
Title: Re: The Better Battery Thread
Post by: Anya on September 13, 2018, 11:10:24 AM
Well I've got a bit of a head start cause my dad has a 3D printer and loads of electrical equipment including soldering irons. We will be having our first go at it on Sunday, but I won't be able to test our battery in pleo until I've done something about his skin!
Title: Re: The Better Battery Thread
Post by: Talon on September 13, 2018, 03:17:11 PM
*Sigh* Keep us informed. I am so shocked that these people who come up with these awesome battery ideas keep... well vanishing. Good luck! As far as your little one's skin, you may just have to dress him in a lightweight, loose-fitting set of clothing or something. Maybe you could remove his skin entirely and make a custom one for him. I thought about using Gibbs Rubber penetrant on Terry who is the worst-looking of my bunch, but since he is already literally coming apart at the seams, I don't suppose there is much I can do for him.
Talon
Title: Re: The Better Battery Thread
Post by: Anya on September 14, 2018, 12:02:54 AM
Looks like reskinning is an impossible task. Even the pleo experts haven't managed! I bought myself some expensive Gibbs from America and paid the expensive shipping And now have to wait FOREVER for it to arrive! I'd give the Gibbs a go on your old one, just to see if it does anything, if nothing else it would add to the information on here for others ;)
Title: Re: The Better Battery Thread
Post by: Anya on September 16, 2018, 12:51:44 PM
Ok, update. We disassembled the ugobe battery and are confident we can create a new strong battery. Close enough to the super battery discussed above and will be chargeable in the green cradle. Once we perfect the design it will be reproducible very easily for anybody who wants one. I'll sum up the costs once done.

However, our main hope is that we can produce a battery pack where the batteries are interchangeable. We would like to be able to take the battery cells out and replace them so that anyone could use a normal charger to recharge them, especially if their green charger is lost or not functional. This will be much harder due to the need for the thermistor to be touching at least two batteries. We will keep thinking.
Title: Re: The Better Battery Thread
Post by: Anya on September 30, 2018, 11:59:40 AM
Today we succeeded in creating a soldered together battery pack which runs a ugobe pleo!
The batteries cannot be removed so it will need to charge in the ugobe cradle.

The design isn't perfect yet, we haven't figured out how to print the clasp to hold it in pleo yet but that won't take long.

I'd love to make some for you guys, but there's a whole array of terrifying tax laws to consider if I'm going to be selling anything to anyone. But just for the record, who would be interested?
The parts are worth around £20 (less if you want cheaper batteries) plus postage and tax if necessary.

Any takers?
Title: Re: The Better Battery Thread
Post by: EmeraldSapphirez on September 30, 2018, 02:12:24 PM
MEEEEEEEEE! Iíll buy a few off you right off the bat now 😊
Title: Re: The Better Battery Thread
Post by: Anya on October 01, 2018, 12:20:02 AM
Hahaha, I love the enthusiasm!

Did a bit of research into uk tax law. It's insane. Even if you're not making a profit - which I wouldn't be, you still need to set yourself up as a business and declare EVERYTHING! Also does mean adding VAT, which would bring a ~£20 battery to ~£25 and with postage on top, we're looking at a final price of anywhere between £30 and £35.

Does that still sound reasonable enough? I'm really sorry, it'll also take me a while to get everything set up but I'm very willing to do so if it will help people.
Title: Re: The Better Battery Thread
Post by: EmeraldSapphirez on October 01, 2018, 01:10:48 AM
It does 😊 I suppose to start with you could ďgiftĒ batteries and people ďdonateĒ the value. I have a friend who did that while he was refining the idea for something. But yes unfortunately you would have to set yourself up as a business in order to properly sell them.
Title: Re: The Better Battery Thread
Post by: Anya on October 01, 2018, 02:46:29 AM
Ok, well while we're refining the design, I'll look into setting up a mini business (madness!) and see how much of the manufacturing I can move to my garage (so I won't need to borrow all dad's stuff)

I'll let you know when everything's ready. Out of interest, how many would you initially be wanting?
Title: Re: The Better Battery Thread
Post by: EmeraldSapphirez on October 01, 2018, 04:04:44 AM
Iíve got 4 Ugobes currently so at least 4 but depending on price/deals potentially more 😊
Title: Re: The Better Battery Thread
Post by: Anya on October 01, 2018, 11:43:36 AM
Wow, great stuff,, I'll let you know when we're ready to start production. :D
Title: Re: The Better Battery Thread
Post by: mweed on October 03, 2018, 02:33:24 PM
While you're figuring out all the business nonsense, also consider international sales, as I'm sure you'll find interested people all over!
Title: Re: The Better Battery Thread
Post by: G Wizz on October 03, 2018, 05:04:10 PM
Hi anya had to register to just now as soon as i found out u may be able to bring my ugobe pleo back to life, mines in great condition bought for my son few years back obviously he grew out of it, it was left to the side for a few years till the other day now my 3 year old daughter really wanted to see it working i charged the battery till went green but did absolutely nothing Im based in the uk so if theres any way id be able to purchase one of these off you u would make me and my daughter very happy tried all other avenues but unable to source one from anywhere thanks.👍👍👍
Title: Re: The Better Battery Thread
Post by: Anya on October 04, 2018, 01:29:39 PM
Guys this makes me so happy that I could help you out :D
Give me a couple of weeks, we've not yet perfected the design but I'll do a video as soon as we have a working model. Not long to wait now, they are coming...
Title: Re: The Better Battery Thread
Post by: Talon on October 05, 2018, 08:10:38 PM
I will be watching this thread too. As Mweed said, think about international sales. As many people here on this forum with multiple Ugobes who all desperately need replacement batteries, you aught to rake in some cash. Best of luck! I really wish Taoworm23- the person who started this thread- was still around for those of us in the states. It would probably bring down the costs a little.
Talon
Title: Re: The Better Battery Thread
Post by: Talon on October 05, 2018, 08:33:59 PM
Gotcha. It will be at least a month before I can look into Gibbs. I sold my soul and finances to Sweetwater Sound to the tune of six hundred eighty bucks and I am not sure when I will be coming up for air. I think I forgot to mention that I used Vynelex on Terry at least twice since he has been here. Do any of you think Gibbs would cause some sort of negative reaction if it were applied over his previous mists of Vynelex? MY other two Ugobes have been rubbed down with Vynelex ever since I've had them. Sorry if I misspelled the name of this product but I'm sure you older members can figure out what I'm talking about.
Talon
Title: Re: The Better Battery Thread
Post by: Anya on October 06, 2018, 01:24:55 AM
Don't worry talon, I was never considering uk only! You guys in the states need this just a simple much. The only issue is on shipping batteries themselves. There could be massive restrictions, that's why I'm focusing on getting the battery-replaceable pack up and running so it will be easier to ship.
Title: Re: The Better Battery Thread
Post by: Talon on October 07, 2018, 06:59:44 PM
That's true. There is all sorts of red tape involved about shipping batteries and stuff overseas.
At the Mods: I have no idea how that random post about Gibbs wound up in here. I suppose I wasn't paying attention or something.
Talon
Title: Re: The Better Battery Thread
Post by: Anya on October 21, 2018, 10:36:55 AM
Hi guys, thought I'd better update you as it's been a while. The battery development continues. Our prototypes are becoming better and better and we are getting closer to having a repeatable manufacturing process. But it's still not quite there yet. We had to abandon the battery-replaceable idea as the dimensions were so tight it wasn't feasible (sorry to you guys whose pleo chargers no longer work, there might be work arounds, but they'll be risky)
Within the next couple of weeks we hope to get a working replacement battery of the style that we can reliably reproduce. I'm sorry it has taken this long but I only have access to the workshop for a couple of hours per week.

So. The next stage is postage. Would anybody be willing to order a single battery and we will attempt to send through the post, if it works, we can start thinking about more. (Remember, won't be ready for a little while!)

Also one final question:
The pleo batteries are green with a brown end, we can reproduce these in the exact same way or could do the whole thing pleo-brown. What would you guys prefer?
Title: Re: The Better Battery Thread
Post by: EmeraldSapphirez on October 22, 2018, 04:32:08 AM
Yes I can buy one 😊

Not fussed at all what colour they are, whichever is the most economical to produce 😊
Title: Re: The Better Battery Thread
Post by: Anya on October 24, 2018, 03:31:43 PM
Proof of concept! New battery works well in pleo so I'm ready to put another together, emerald can you pm me and we'll arrange a trial purchase to see if it can get through the post. :)

We're almost there guys!!
Title: Re: The Better Battery Thread
Post by: Talon on October 25, 2018, 10:40:09 AM
Emerald, keep us posted on your experience here. I would be anxious to see how this goes.
Talon
Title: Re: The Better Battery Thread
Post by: EmeraldSapphirez on October 26, 2018, 06:04:19 AM
Messaged you Anya 😊 x
Title: Re: The Better Battery Thread
Post by: Anya on November 01, 2018, 07:18:11 AM
We've had a couple of set backs - but don't worry, we're not giving up! I'm still here and eventually, we will have good, strong, reliable batteries ready!
Title: Re: The Better Battery Thread
Post by: InmemoryofRomeo on November 02, 2018, 05:22:31 AM
Pleoís do run just fine without their skin, although they look way creepier :D

However they donít run without batteries :( So I hope that a solution can be found there.
Title: Re: The Better Battery Thread
Post by: Anya on November 02, 2018, 04:05:12 PM
Don't worry, every set back is just learning more. We will not stop until we have good batteries. Even if I need to buy a very broken ugobe to test them!

I suppose this has just shown how much R&D is needed to create something like this, and it's nowhere near as easy as it looks in the online guides!
Title: Re: The Better Battery Thread
Post by: PinkPleo on January 17, 2019, 12:49:43 AM
Glad someone is still working on this! I think the Pleo are approaching extinction soon without a new battery source. I canít even find the $100 repack batteries on eBay anymore.
Title: Re: The Better Battery Thread
Post by: Clovoro on January 17, 2019, 05:22:47 AM
That's something I worry about too, PinkPleo. I have little Ugobes and as a poor college student I can't even afford those xux You'd think there'd be some other way to charge or replace a battery in this day and age. My little ones have to share a Lipo battery and I have to decide to slowly acquire an original charger and adapter/cable thing in the chance that Olluan's battery could be fixed, or just never have them running at the same time xwx And if something happens to their battery now, I'll lose them both.
Title: Re: The Better Battery Thread
Post by: Pleo Power on January 17, 2019, 09:42:44 PM
I currently have a battery at a battery repair place, they had actually already fixed the battery for another Pleo when I was there and said they've been getting a ton of them in the last 2 months. It should be done some time early next week. I'll make a post or a topic if it works.
Title: Re: The Better Battery Thread
Post by: Anya on January 26, 2019, 01:02:14 PM
Guys I made a couple of batteries and emerald is testing them, however she's had a bit of a delay so won't be able to test properly for a little while. Would anyone like to try a battery?

The test we were doing was to investigate whether they would charge after being fully run down as I don't know if my charger works. No light shows at all with any of my new batteries.

I have been running Arthur on and off with the same battery for some time and he shows no signs of slowing!
Title: Re: The Better Battery Thread
Post by: pnhicks on January 27, 2019, 10:30:08 AM
Hi Anya,


I operate two Pleo (one RB and one Ugobe) at a care facility for the aged.  I run them in 1.5 hours sessions before charging.  My pleo is conking our before the end of the session now running on an RB battery with the bottom key cut off flat with the case.


I would love to test one of yours!


Peter Hicks
Zaragoza Spain 50018
Title: Re: The Better Battery Thread
Post by: Anya on January 27, 2019, 02:29:04 PM
I've never tried sending them abroad and I'd love to try. I'm very concerned about the US customs rules so that will be the ultimate test, Spain will be a very good first step. I'll pm you with the details.
Title: Re: The Better Battery Thread
Post by: Talon on January 27, 2019, 08:09:54 PM
Hi, Anya! If you still have any prototype batteries floating around, I'd like to try to help you out. What do you need us to do? Just as a note of caution, I have a Ugobe charging cradle but no Ugobe adaptors. I have been using the egg chargers and batteries sold by RedWoodsMama from 2011.
I have a truly sinking feeling my poor egg batteries are about done in. I charge them for around four hours, then run my Ugobes for twenty to thirty minute stretches over a week's time. I leave the batteries out of the Pleos when they aren't in use.
Lately both of my two batteries are not holding any of a charge after the first thirty minute run. The bots aren't displaying flat-battery behavior at the end of their runtime or anything, but the next day when I insert their batteries, Ugobe will give a snore and curl up and Bleu will make the "Huh?" noise, start to move, freeze and repeat. She has always acted strangely with a mostly-dead battery so that's nothing new, but what's going on here? Are they truly at the end of their life cycles or is this something more serious?
I have a third Ugobe- Terry who also is using either of these batteries as I only have two to my name and he is displaying normal dead battery behavior like Ugobe. Anything I can do to figure out what's going on here?
Talon
Title: Re: The Better Battery Thread
Post by: Clovoro on January 29, 2019, 10:40:44 AM
I'd love to try one, but I'm in the US and don't have any money right now, and I also don't have an original Ugobe charger, just the egg charger ^^;
Title: Re: The Better Battery Thread
Post by: Anya on February 02, 2019, 12:16:19 PM
If I'm not mistaken, the egg chargers and batteries used in them were lithium based. (Please correct me if I'm wrong) I've been working with the original ugobe green batteries which are nickel based and designed to charge in the green cradle. I've seen a couple of these knocking around on eBay so you might be in luck if you have a quick search. I have no idea how they'd react in a charger designed for lithium batteries and it might be dangerous to even try.

Regarding shipping to the US, I need to work out whether they are actually going to charge before putting them on main sale. Thankfully emerald and phicks are helping me out with that, doing some full on testing.

If I get good results back from these, I will certainly attempt to send one all the way to you. My main fear is that customs are going to refuse them as although they'd are not loose cells, they do still count as batteries and the new rules are quite strict.

I'll be sending one to Spain very soon so will keep you posted :)
Title: Re: The Better Battery Thread
Post by: pnhicks on February 04, 2019, 03:29:46 AM
Yippee! :)


Peter in Spain!
Title: Re: The Better Battery Thread
Post by: grumpy on February 04, 2019, 03:19:10 PM
The classic pleo (Ugobe, Merlin, and older Innvo Labs) used NiMH batteries and the green charger base.  The egg chargers were developed to enhance these older pleos and use lithium-ion batteries.  Pleo RB are also Lithium-ion and use the brown charger base.  The main difference between the egg charger batteries and the Pleo RB batteries is the tab that is supposed to prevent you from inserting them into the wrong pleo types.
Title: Re: The Better Battery Thread
Post by: pnhicks on February 06, 2019, 03:43:29 AM
Please note that I am not a battery expert, but I am an aircraft maintenance technician with 32 years experience so take the following info with that in mind:


Dear All,


I am replying after much deliberation if I wanted to go down this rabbit hole or not.  Here goes.

Different battery chemistries require specific charging algorithms, i.e., charge voltage, rate of charge (amperage/hour), end of charge detection, etc.  While the battery might not explode or catch fire (possible like in some cell phones), it certainly will ruin the length of service and performance of your battery.
 

The brown and green chargers have different power supply voltages (that should be a hint?).
The fact that you can use a green power supply with egg charger must indicated that here is some voltage regulation (down) in the internal circuit. I don't have one to be able to confirm this, but suspect that it is true.


The RB has two polarity keyways in its battery compartment that allows it to use all three batteries types by design. By "manipulating" the "polarity key" on the battery case, you can use either brown, green or white batteries in the UGOBE Pleo. The Pleo will not care if the battery chemistry is Li-poly , Li-ion , NiMH,  or NiCad or whatever. 


This requires extreme care when placing the battery in the Pleo in correct polarity (match the pads on the battery to the springs in the base of the battery compartment).


Both the brown and green charging cradles have battery "detecting switches" in their polarity key slot.  If you have used "cut the key off" technique to use a different battery than intended in your Pleo, its own charger base will not detect it now and will not charge !


What to do?  Using a suitable material that will securely hold the tiny little detection switch "fully compressed" , i.e., not sticking out into the keyway hole.


Use the above information at your own risk and I didn't tell you to do it!


Peter
Title: Re: The Better Battery Thread
Post by: Clovoro on February 11, 2019, 11:36:15 AM
I don't think I got notifications for these replies, for some reason.

I do try to check on ebay, but I haven't had much luck lately. I saw a green charger on its own a while ago but I guess someone bought it, because it disappeared. I see cords/cables for the charger often, for some reason. I hope customs would let you send to the US, Anya ^^ Though I think I might still have to find a charger. Both of my babes are Ugobe, but I don't have a green charger.

Hm.... so... Classic: NiMH and green charger or Lithium-ion and egg. RB: Lithium-ion, brown charger. A tab prevents you from using the RB battery and egg battery in the wrong Pleos?

Things can be done to make all three battery types work in a Ugobe, but it would have to be done carefully, if it were done....? In the end I'm not sure I could do it. I do have a dead Ugobe battery I could technically try, though?? I just don't want my only charger to be damaged. Hm... Maybe if I got an RB battery and messed with that?? I am confused~

Title: Re: The Better Battery Thread
Post by: pnhicks on February 12, 2019, 04:58:21 AM
Hi Clovoro,


Just about right, remember the key on battery is to ensure: 1) proper polarity on installation in Pleo and in charger.


2) To ensure that the battery is charged on the correct charger brown on brown, green on green. 


The Ugobe Pleo was made before there was a brown and therefore has no provision for its key in its battery bay.  That doesn't mean the brown battery will damage it (as long as it is installed with the correct polarity).


The RB Pleo was made with two keyways in the battery bay of the pleo, so it can accept all three batteries without problem.  Its brown charger on the other hand only accepts the original lipo battery configuration.


The White battery (egg charger) has the Ugobe key configuration and can be used in both versions without mod , but the egg charger can only charge lipo batteries (I don't know if it has one key way or two) If it has two keyways it could charge the brown RB batteries as well.


Buying a used charger is not a particularly good idea (IMHO) as they were crap (technical term) chargers in 2009 and will not have improved in someone's garage in 10 years (unlike say wine).


Your battery is constructed of 6  1.2V NiMH batteries spot welded together in a 6S (6 cells in series) configuration.  There is also a fuse current limiter and the famous temperature sensor. Connecting any good battery charger that charges NiMH battery packs in this configuration is a much better and safer option.


Some people recommend deep freezing the battery for 48 hour before the charging process to help restore the battery.


Cheers!


Peter

Title: Re: The Better Battery Thread
Post by: Pleo Power on February 18, 2019, 06:52:49 PM
The battery I took to a battery repair place has been re-celled and works perfectly fine. Should I make a topic about this?

Also I tested it in all three of my Pleos and they all work again. I'm not sure what happened years ago, but it seems to have been the battery.
Title: Re: The Better Battery Thread
Post by: Anya on March 24, 2019, 02:34:38 AM
I could try shipping to the US but I've got a couple of things that have been highlighted by testing to work out first. The recelling thing does seem to be simpler (and to be honest probably cheaper, my batteries are £25)
Title: Re: The Better Battery Thread
Post by: pnhicks on March 24, 2019, 02:41:36 AM
Hi Anya,


I had no complaints with performance of your batteries! There are a few kinks to work out in the case design, but nothing overwhelming and I think that the price point is more than fair!


Don't throw in the towel after all your hard work!


Cheers!


Peter
Title: Re: The Better Battery Thread
Post by: Clovoro on March 24, 2019, 08:41:18 AM
Oooooh I can't wait until I can get my hands on one >w< My birthday is coming up and I'd love to have both of my Pleos walkin' a round at once~
Title: Re: The Better Battery Thread
Post by: Anya on March 30, 2019, 02:45:34 AM
Sorry guys, I do still fully intend to make some more of these, but you know what life is like! My snake just got mites (AGAIN) and if you'd like to see the enormous faff invoved, feel free to Google! My time is simply being eaten by these things!
I will try very hard to make a couple more, I owe one to emerald and I'll have a go at sending you one clovoro.
Title: Re: The Better Battery Thread
Post by: pnhicks on March 30, 2019, 06:19:46 AM
Hi Anya,


Sorry about the mites sounds, ugh, unpleasant, rather like keeping a reptile in your house, oh, oops...sorry :-[


Before you pop off another set of batteries, just a few observations,


the yellow insulation tape loses its adhesiveness when exposed to the heat of battery use/charging, then the little copper hourglass shaped busbars started floating around (oh help), speaking of the hourglass shaped busbars (clever design if they had stayed put), their little corners had nice sharp corners, usually bent up or down, perfect for punching through the before mentioned yellow tape (not a fan) and shorting to, say, a nearby battery post.


Sorry that a sound so whiny but I was a quality inspector and a product improvement manager for many years (some people say anal retentive since birth).


Cheers


Peter



Title: Re: The Better Battery Thread
Post by: Anya on March 31, 2019, 10:20:01 AM
No worries Peter, all this is really helpful. I actually have a much stronger tape that I used for another battery and then lost! I'll see if I can dig it out. I'll see what I can do about your other feedback as well. Thanks a lot :)
Title: Re: The Better Battery Thread
Post by: Jett on April 08, 2019, 05:45:16 PM
Pleoworld in the Netherlands has batteries:

https://pleoworld.eu/pleo-rb-reserve-accu-662911?fbclid=IwAR39uTpFlLxuX2UrEatgqh2GC3yF0simM77ro2aD54VPMnXx8HR31wm04JU
Title: Re: The Better Battery Thread
Post by: Clovoro on April 18, 2019, 08:22:07 AM
Sorry guys, I do still fully intend to make some more of these, but you know what life is like! My snake just got mites (AGAIN) and if you'd like to see the enormous faff invoved, feel free to Google! My time is simply being eaten by these things!
I will try very hard to make a couple more, I owe one to emerald and I'll have a go at sending you one clovoro.

Yay~ nwn The semester is ending and I'll have to pack everything up for the summer and go home soon. I don't know how long shipping it would take, but I may have to just wait until I'm back home to receive it. Take your time. Is your snake doing better?
Title: Re: The Better Battery Thread
Post by: Pennys mum on May 09, 2019, 05:02:12 AM
Just to let you know guys - we have started selling battery packs for Ugobe Pleos again. Weíre shipping worldwide now using the eBay global shipping programme.

Link here https://www.ebay.co.uk/itm/Replacement-battery-pack-for-Ugobe-Pleo-Dinosaur-SHIPS-WORLDWIDE/323802089971
Title: Re: The Better Battery Thread
Post by: Anya on May 09, 2019, 01:44:39 PM
I'm glad someone else is doing these, sorry I fell off the face of the earth guys. I'll be back to it at some point and then there'll be a few more on the market.