I've had them for a few months and they seem to work really well. And the price of Lipo batteries in a lot of other websites are out of this world insane. I can't stand the world raping you for your cash so they can get rich. The price for these batteries was better so thank you to them it seemed reasonable. I think somewhere around $54 for both of them… They're not worth any more than that. But I thought it was reasonable.