Description: High Quality high capacity light weight&nbsp rechargeable DC 3.7V Li Ion 1300mAh battery. Longer battery life than the original battery that comes with the cell phone. Best replacement for the original Palm Treo 500 500v 500p 550 550V series battery pack. No memory effect. Can be charged or discharged&nbsp as needed without loss of capacity.Overcharge protection with built in battery life microchip. CE Certified. Compatible with: Palm Treo 500 500v 500p 550 550V series. 6 months&nbsp Manufacturer warranty. Type: Battery Compatible Phone Manufacturer: HP/Palm