The NP-F970 L Series battery pack is designed specifically for use with select Sony camcorders. Carry a spare in your camcorder bag, and enjoy up to 18 hours of continuous recording time. (Battery life will vary with model, usage, and temperature.) And rechargeables like this one don't lose their capacity when partially charged or discharged, so you can freshen up this battery whenever it's convenient.
Part of Sony's AccuPower system, InfoLithium batteries include a built-in microprocessor that communicates with Handycam® models. The AccuPower Battery Meter, a highly sophisticated power management feature that constantly monitors shooting conditions, displays the minutes of remaining battery time in the corner of your viewfinder or color LCD screen. It takes the guesswork out of figuring out when to change batteries.