| 摘要 |
A power supply system is provided with an output terminal unit including a common output terminal, which, when an amount of stored charge in lithium-ion secondary batteries capable of supplying discharge power as a first DC power to a DC load is greater than a predetermined first reference value, supplies to the DC load the first DC power from the lithium-ion secondary batteries and which, when the amount of stored charge is less than the first reference value, supplies to the DC load a second DC power obtained by converting AC power from a system power supply using an AC-DC converter circuit.
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