Lithium-ion power packages for A/B® mount. Frezzi’s new Lithium-ion camera power packages come complete with (2) Lithium-ion batteries and (1) dual channel simultaneous battery charger with 50W power supply. Includes 14.8V/100Wh Lithium-ion batteries with advanced meter, each weighs only 1.9lbs and can run a camera drawing 25W for 4 hours. Dual simultaneous Lithium charger with 50W power supply you can use while charging both of your batteries.