NP-F970: Small and lightweight, Sony's Lithium-ion batteries can be charged or discharged at anytime without developing memory effect. This means they never lose their ability to hold a full charge. They also display remaining battery time on the LCD as well as in the viewfinder by continuously communicating with the camcorder. InfoLithium battery packs have a built-in micro processor that accurately calculates remaining battery life in minutes.

Product Description:
Maximize your Handycam camcorder recording times with the NP-F970 InfoLithium L Series rechargeable battery pack. Now with 30% more stamina than the NP-F960 rechargeable battery pack, the NP-F970 provides up to eighteen hours of continuous recording time. The NP-F970 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.