Hi, that is tough but since it is not my Ugobe and you have no other battery, I would say it is worth it to try if you do not mind spending the money, but I would only use them on the Ugobe, Remember they are a tight fit, As for how long they last.. well I know when I used them they were close to two hours which is great but I have not used one in months, The last time I used one on a Ugobe, it did not last as long, not sure if it is because they seem to still hold a charge after disconnecting, ( refer to the photo of it glowing even though not plugged in...

) but also my battery was made in 2011. That was June 2011, so if no new ones I can't say how long they should last.

I am hoping the egg batteries show up again as they were fantastic but I can't say for sure if and when they will pop up or what? I just do not know what is going on with them, If I knew it was a matter of say four months, then if it were me, I would say wait as I know they are great and will vouch for their satisfaction, but since I can't say if and how long it may be till they may show up again I would reccomend if you want a battery now, then this seems to be the only ones I have seen anywhere. very strange and kind of scary in my opinon. It is like Pleos, suddenly vanishing and only being available on one site or one country and not even on ebay.

:(If you do not mind spending that much money and they ( the seller will vouch that they are in good new condition, not batteries that were made in JUNE, 2011, and have just been sitting around, ) then I would take the chance and if not happy can return them ,just read the return policy, but it seems this seller has lots of happy customers.
I am still going to try and get the egg batteries but I know nothing as of now and I have more then a dozen Pleos that have no batteries or have to share so they are not too happy.

RWM

and the Pleo township of the redwoods.
I would ask Kat since she has one also what she says about this battery and if she uses hers very much,