Portable Emergency AA Battery Charger Extender suitable for the Verizon MiFi 2200 - with Gomadic Brand 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 (Verizon MiFi 2200 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 Verizon MiFi 2200. Advanced logic maximizes overall charger efficiency. Easy to operate. Simply insert batteries, toggle on/off switch and your Verizon MiFi 2200 will start to charge. Internal circuit designed to protect your Verizon MiFi 2200 from power surges, overcharging and short circuiting.