Replace 3 AA cells with this universal 4.5V DC battery eliminator. Connects to USB port on a phone charger, computer, or portable USB battery pack.
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Utilizes our custom AA battery cells, one Active and two Dummy (shorted) to complete the circuit in your 3 AA cell battery tray. Connects to USB port on a phone charger, computer, or portable USB battery pack. Converts USB bus power (5.1 Volts) to 4.5 Volts DC. Maximum current is determined by the capabilities of your USB port. Phone chargers are often rated to 1 Amp maximum, while tablet chargers are often 2.1 Amps maximum.