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SKU:42353118
This unit is a solid-state device which allows uninterrupted DC power in association with a power supply and a battery. The transfer of load between the power supply and the battery is instantaneous. It also keeps the battery charged by providing float charge. Pre-set for 12V power supply Minor modifications for 24V power supply
I use this DC UPS for my backup sump pump. The UPS gets DC power from a linear 12 Amp "13.8V" (13.72v measured) regulated power supply. When the backup sump pump is not running the UPS trickle charges a new lead acid 12V backup battery at the constant 13.72V and the current between 90mA to 110mA.Test:I simulated a power outage by turning off the DC power supply. Then I manually triggered the backup sump pump float switch to start the pump. The UPS used the power source from the backup battery. When I turned the DC power supply back on the UPS switched to use the power from the power supply. It worked as designed!
