With a high power capacity of 32.6Wh/4400mAh, the RP-NPF770 can power HD camcorders and a host of other drives for over 6.5 hours on a full charge. Using the built-in data communication chip, the battery is synchronized with the camcorder to display the exact power percentage on the LCD screen. Samsung and LG lithium ion batteries (model 18650) are used in Hedbox battery packs. They have no effect on memory, provide high efficiency, and allow for a compact and lightweight battery. The battery circuit has multiple protections: abnormal current protection, voltage protection, short circuit protection, and overheat protection. This allows for a longer battery life and safer use for professional purposes. Hedbox batteries provide the advantages of lithium ion, which means that it can be charged or discharged at any time without developing a memory effect. It comes with an RP-DC30 Digital Compact Travel Battery Charger that conveniently charges all types of batteries from either AC wall power or a 12/24V DC power source. Using easily interchangeable plates, the compact charger can be used for world brand battery models. Smart charging systems integrate control systems within the charger and electronics within the battery to allow precision control over the charging process. As a safety precaution with high capacity batteries, a pre-charge stage is used. The charge cycle starts with a low current. If there is no corresponding increase in battery voltage, it indicates that there is possibly a short circuit in the battery (zero volt trigger). The package contains: Hedbox NP-F770 - Battery of 2 batteries with double charger (4400 mAh) Hedbox NP-F770 - Li-ion battery (4400 mAh) Hedbox RP-DC30 charger Hedbox - Power cable for car (12 V)