BoxWhale 3.7V 240mAh Battery For Hubsan X4 H107L H107C UDI U816A RC Quadcopter

I ordered one of these for my Hubsan X4, and the battery swelled up like a balloon after only 1 use. Amazon was great about sending me a replacement, but the next one began to swell up while charging it for the first time, before using it even once. I have about 15 small li-po batteries in the 240 to 380mAh range, and these two from BoxWhale were the only ones I ever had a problem with. Might just be a bad production run, but I won't buy any more from them at any price.

Cheap, I paid way to much for this, After one use, the pack puffed up and didn't last long. I purchase this for my Hubsan X4. I later found out that for a few more bucks, you can get a few more batteries, and a better quality.