Having a spare battery handy will give you piece of mind knowing that you can enjoy watching your most favorite DVD even when you are traveling. This ultra high capacity Lithium rechargeable battery will deliver up to six hours of uninterrupted viewing time and is designed to meet or exceed OEM specifications. It is 100-percent compatible to the original equipment chargers. Click on Overstock.com for great savings on cameras and accessories. For use with the following Panasonic portable DVD players: DVD-LS-5 DVD-PV40 DVD-LV50/LV57/LV60/LV65 Specifications: Chemistry: Lithium-ion Voltage: 7.2V mAh (capacity): 3600mAh Run time: up to 6 hrs