Gomadic Advanced Panasonic HC-V201 compatible AA Battery Pack Charge Kit &ndash; Portable power built with upgradeable TipExchange Technology Specification: Input Voltage (4 X AA Batteries), Cable length (6 inches), Dimensions (5.0 X 1.5 X 0.75 inches), Circuit Design (Panasonic HC-V201 specific), TipExchange enabled (Yes) Built using the unique Gomadic TipExchange Technology that protects your investment by providing the ability to upgrade charging ports by simply swapping physical connectors. Integrated circuitry regulates output voltage specific to the Panasonic HC-V201. Advanced logic maximizes overall charger efficiency. Internal circuit designed to protect your Panasonic HC-V201 from power surges, overcharging and short circuiting. This Gomadic Battery Pack is uniquely designed to work with both standard (e.g. alkaline) and/or rechargeable AA batteries.