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SECONDARY BATTERY CHARGING DEVICE, METHOD OF CHARGING IN SECONDARY BATTERY CHARGING DEVICE, PHOTOVOLTAIC GENERATOR, METHOD OF POWER GENERATION IN PHOTOVOLTAIC GENERATOR, PHOTOVOLTAIC-CHARGED SECONDARY BATTERY SYSTEM, ELECTRONIC DEVICE, AND ELECTRICAL VEHICLE
SECONDARY BATTERY CHARGING DEVICE, METHOD OF CHARGING IN SECONDARY BATTERY CHARGING DEVICE, PHOTOVOLTAIC GENERATOR, METHOD OF POWER GENERATION IN PHOTOVOLTAIC GENERATOR, PHOTOVOLTAIC-CHARGED SECONDARY BATTERY SYSTEM, ELECTRONIC DEVICE, AND ELECTRICAL VEHICLE
A battery charging device includes a battery pack including a plurality of battery cells connected in series, and a control unit. The control unit is configured to change a series connection of the battery cells in response to a variation in output voltage of a solar battery.
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