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What cordless power tool battery and charger accessories are available?

Shop for Batteries and Chargers

Batteries and charger in a set. There are a few accessories available for them. There is only one common cordless power tool battery or charger accessory: the USB battery converter.
USB charger is used to charge smalle devices using the power from a cordless power tool battery. USB battery converters attach to a rechargeable battery and use its energy to power USB ports which in turn can charge the batteries in small devices such as mobile phones and music players.