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.
• Key Features InfoLithium 'M' type Rechargeable battery with Super Quick Charge capability.
• NP-QM71: 7.2v, 19.9WH (2360mAh). • Built-in Microprocessor accurately calculates remaining battery life in minutes • Super Quick Charge takes 70% less time to charge the battery. Dimensions (WHD) 38.2 x 39.5 x 55.6mm Weight 160 grams Maximum Output Voltage DC 8.4V Output Voltage 7.2V Operating Temperature 0 degrees C to 40 degrees