Invention Grant
US09136721B2 Power supply device for electric power tool 有权
电动工具电源装置

Power supply device for electric power tool
Abstract:
The present invention is a power supply device for electric power tool that supplies an electric power to an electric power tool. The power supply device includes: an adapter configured to be electrically connected to the electric power tool; and a fuel cell configured to generate an electric power to be supplied to the electric power tool through the adapter, by causing an oxidation reaction between a fuel and an oxidant.
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