Blomiky2 Pack 3.6V 700mAh AAA Re-Chargeable Battery Pack and USB Charger Cable for RC Battle Bumper Cars and Blomiky C143 D143 RC Vehicle D143 Battery 2

I bought these to replace the lousy original one in my air driven sanding helmet. The original battery lasted maybe a day........ and always seemed weak. So I looked at replacing the original battery and was blown away that it was a 74.00 item. It's only the size of a zippo lighter. Nevertheless, I received two packs of these rechargeable ones and soldered them into the helmet, in series so i'd have 2 sets. So I charged them 3 weeks ago..... and guess what? they are still very potent and run the fan like it's supposed to be run. Couldn't be happier. AND we'll see how long they cycle and last....... I expect they will be fine.

Works great in my grandson's toy, thank you.

Don’t buy, I used it for my Christmas Train, it ran about 1 minute and the batter is died.

I don't know if it's the battery or the controller itself. I charged it up and my son put it in his truck. His truck goes forwards and backwards, but will not turn. Could be the battery not being able to help push enough juice or possibly a bad controller. It definitely works.

Haven't tested the capacity with a dummyload, but it definitely feels much longer than smaller capacity batteries I got with rc toys.