How To Test Sump Pump Backup Battery. First, check how many gallons per minute can your backup pump. Connect main discharge line with primary sump pump.
If your backup appears weak, that means you need a new battery. The charger is a 3 stage charger (or at least it has 3 different lights on it) and it’s consistently shown all three lights on which means the battery is fully charged. Inspect inside of the battery backup sump pump
The check valves will make sure that water does not flow back into both sump pumps.
A battery backup sump pump is installed to your primary electric pump in the sump basin. In addition to the required battery replacement, battery backup sump pumps can mechanically fail after prolonged use. It comes with a switch that raises the float to activate the backup pump when the water rises in. You must hook up the sump pump directly into an outlet.