I bought this battery awhile ago for a Motorola Razr I used to charge my phone while I slept at night so it would be fully charged for the day. When I started using this battery I noticed my phone would get hot while charging. One night I fell asleep with my phone charging right next to me on my bed and woke up with a burn mark on my arm. The burn ended up leaving a scar and needless to say I got rid of the phone all together because I'm pretty sure that the battery ruined the phone. I wasn't going to pay the ridiculous high price the actual stores are selling for battery replacements so I thought I'd try this very "cheap" alternative. Good thing my contract was up so I could get a new phone. Never again will I buy a battery online like this. Hopefully having a newer phone now will mean I have a good battery and not have to worry about buying a replacement anytime soon. So the batteries ARE cheaper buying them like this, but is it worth getting burned, literally?