COMPATIBILITY:HTC Touch Pro-2 (CDMA), Sprint HTC Hero, Sprint HTC Snap, Verizon HTC Imagio, Verizon HTC OzoneWant your phone to last longer? We suggest this 1800mAh Mugen battery. This battery is about 20% upgrade from the stock battery that came with your phone.Why buy the oem battery from the store for $44.99? This Mugen battery yields MORE POWER for LESS MONEY!The oem battery is only 1500mAh. This battery is 1800mAh.It's always a good idea to carry a spare battery for flight delays, power outages, longer-than-expected trips. You can't always recharge your phone when you'd like to. But with an extra battery on hand, you can always talk, type, and work as long as you need.Keep it in your bag or briefcase and stay connected, powered up, and ready to get the job done. You can recharge the battery while connected to phone or charge the battery separate in our cradle.No memory issues when you remove battery - all your information will stay in tact. Brand new in retail package.Q: DO I NEED A CUSTOM BACK DOOR FOR THIS BATTERY?A: No, you do not. This battery will still fit under the original/standard back door cover.