How To Test Sump Pump Battery. The battery backup system operates in conjunction with a deep cycle battery, which is designed to regularly discharge most of its capacity. If your home has a basement sump pump, i recommend you test it regularly to ensure its proper operation.
Verify that the electrical cord for your sump pump is plugged into an outlet. Disconnect your existing pump, pull it out of the basket, and check the gph rating on the label or check the pump’s specifications on the manufacturer’s web site. These batteries are made for constant charging and discharging, (cycling) without rapidly degrading the integrity of the battery.
Locate the test button on the battery backup sump pump.
Your sump pump has no power. If a humming sound is. You can just test the pump to ensure proper working order by temporarily unplugging the primary electric pump or simply lifting the float switch by hand. If needed, pour water in the sump basin.