Sony 2NPF970 L-series Info-Lithium Battery Dual Pack
The 2NP-F970 is a rechargeable battery pack, which includes two units of NP-F970 and allows a compatible device to display battery information on its LCD monitor.
Small and lightweight, Sony's Lithium-ion batteries can be charged or discharged 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.