MSDS Verified Part Number: 702030, Rechargeable 3.7V 400mAh Li Lipo Lithium Polymer Ion Battery Pack with 2 Pin 2.0mm JST Connector

I've bought two batteries for my Sphero 2.0 and fit perfectly. This one’s came with a different connector that had to be soldered to the Sphero one. After that, they’ve charged on 2 hours and are working with no issue at all.

Worked great to replace the bad batteries in the Sphero 2.0 robotic ball.

I have purchased multiple batteries of this design. They do not last, and they do not charge to the fullest.

I originally bought another brand 2-pack of "702030" batteries to replace the ones in a Sphero robot I was repairing, whose batteries had died and swollen. Those batteries were about 2-3mm longer than the 702030 batteries in the Sphero, and would not fit. Silly me, for thinking the number also indicated an exact size (they have to fit a very tight space). Checking the size specs more closely, I hoped these would fit properly. They were indeed a tight fit, but so were the originals, and that little ball is whizzing around and again being a nuisance to the dog. With only a few days' experience, I can't vouch for lifetime or even stated capacity, but they work at least as well as the originals. I'd get them again, for the same purpose!

A friend gave me one of those electronic lighters. The battery was about to bite the dust. I just wanted the battery to see if I could revive it. Works great! Probably could have bought a new lighter, but it was fun knowing I could fix it instead of always throwing away everything when it stops working!

saved a 120.00 pair of ear buds

La compré para cambiar la batería del case de unos audífonos Bluetooth soundpeats, le quedó a la perfección, solo el conector era un poco más grande pero lo corte y soldé el de la batería vieja, quedaron como nuevos.