Crewella is right, If you look closely at the NEW one, you will see that on the bottom it has all metal connectors, and the original or "old" has black connectors or Non-connectors on the bottom. The new one has small print on the front, the older one is slightly larger. The labels are entirely different on the back. Also as stated, you can see the "new" one weighs less at about 4 oz, the old one almost twice as much at about 7 oz. The new one has a very small connector slot with a different shape at the end of it, like small t, the orginal is a longer rectangle shape. There is no way to fit the OLD Ugobe battery into the NEW charger, it just won't go. I am not sure about the old one fitting into the New Charger, but I would not even try it, no risk of anything and I do not want to try it, though it looks like it May, I would ask Kat since she got this first. If you were to get one of these, it is clear they were made to ONLY fit into the Charger that goes along with it, but then again, these batteries DO not sell by themselves, they come with the charger.
I am finishing my test run of this battery today compared to the Egg battery that I have and sell, It is suppposed to run at least 2 hrs, but the original claim said 3-4 hrs and they had to change that to 2-3 hrs after Kat got hers and showed it only ran slightly more than 2 hrs, just like the fully charged Egg battery. The big difference of course, is that it is supposed to run in the RB. I do think Kat used it in one of her RB and it ran, but I will go back and read what she said.She also tested this for me as I wanted another test with both the new one and the egg at the same time and when I am done I will post the results.I have been offered these batteries and I just more than anything want to see how they measure up next to the egg, I am not interested ( Myself ) in that they say they go into the RB as I will continue to use the Innvo Lab Brown RB battery, esp since my newest Rb is under Warannty. I will gladly answer any other questions.
Just a note ; It has now been over 18 hrs and the NEW battery is still sitting in It's Charger, UNPLUGGED and is GLOWING or "GREEN"

It is NOT plugged in and still is green...that I can not explain and is just plain weird......................................................................................... RWM