The NP-FS22 InfoLithium S Series rechargeable battery pack gives you plenty of charge while on the go. With its storage capacity of 1360mAh you'll get over two hours of continuous recording time, even with the camera or camcorder's viewfinder on.The NP-FS22 features a built-in microprocessor that accurately calculates the remaining power within minutes. It also doesn't have the memory effect found in other batteries, so you can charge it at any time, regardless of how much charge is remaining in the battery.