Specifications: Input Voltage: AC 100-240V Input Current: 0.8A Fit Voltage: 1.2-18V Type: Ni-MH, Ni-CD Output Voltage: 27V /1.5A(1-7cell)/1A (8-15cell) Plug standard: UK Color: Black Charging Indicator LED light: Remain red: charging Remain green: full charged Flashing red: bad connected, high temperature or reverse connect If your battery getting too old and cant take a charge or can not run after charge, then you need a new battery, not charger problem.
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