Gomadic Portable AA Battery Pack designed for the Asus Transformer T100 T100TA-H1-GR T100TA-C1-GR - Powered by 4 X AA Batteries to provide Emergency charge. Built using TipExchange Technology Integrated circuitry regulates output voltage specific to the Asus Transformer T100 T100TA-H1-GR T100TA-C1-GR. Advanced logic maximizes overall charger efficiency. Specification: Input Voltage (4 X AA Batteries), Cable length (6 inches), Dimensions (5.0 X 1.5 X 0.75 inches), Circuit Design (Asus Transformer T100 T100TA-H1-GR T100TA-C1-GR 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. The rugged composite design is built to last. This product is backed by our comprehensive Gomadic Lifetime Warranty. This Gomadic Battery Pack can be reused forever by simply inserting fresh batteries, providing instant power on demand.