The original battery that came with my phone had gotten so bad that I could not even make it through one phone call without getting the "low-battery" beep. TheMotorola Battery Li-Ion Extended and Dark Pearl Gray Door (K1m)battery has almost twice the storage capacity (1640 mAh) of the phone's original battery and cost less than half of what the Verizon store wanted for a replacement of the original 880 mAh battery. I use my phone several times everyday and now I only recharge once a week.