The Pentax D-LI122 Rechargeable Li-Ion Battery For Optio VS20 replaces the D-LI68 and powers the Optio VS20 megazoom digital camera. The battery gives you approximately 200 recordable images, 100 min of video recording, and 180 min of video playback per full charge. It features 3.7 V, a capacity of 940 - 1000 mAh, and a power output of 3.5 Wh.