It is up to the user to periodically check the battery electrolyte and, if required, add distilled water. A Wet/Flooded Lead-Acid Battery is not a maintenance-free battery, nor is it a spill-proof battery.The most popular sump pump battery types are lead-acid batteries: In that case, it is important to know how many gallons the sump pump may pump out on a single battery charge, depending on the required height.Īll these values are good to know BEFORE choosing and installing a battery-powered sump pump. In the case of a "worst case scenario" emergency, one may assume that the basement will be fully flooded and that the sump pump will work continuously until the battery is fully discharged - and that is really the worst-case scenario! How often will sump pump cycle, depends on the sump pump volume (gallons per minute, for example) and the amount of incoming water. For example, some motor controllers, when the alarm is triggered, will run the pump motor for 10-20 seconds continuously (to prevent short cycling) or until the float switch resets itself. Most popular sump pumps come with their own battery boxes and their own battery chargers, somewhat limiting the users regarding battery selection.īut, in the case of emergencies, one has to know that sump pumps don't operate continuously. 24V sump pumps: choose 2 high-quality AGM batteries and connect them in series.12V sump pumps, a long operating time required: go for 2 or more high-quality AGM batteries and connect them in parallel - use the same battery model of the same brand, preferably from the same batch,.12V sump pumps, normal conditions: go for a single, high-quality AGM battery,.The most common type of battery-operated sump pumps are 12V sump pumps, with 24V sump pumps being used where a larger flow (gallons per hour, gallons per minute) or larger lift (given in feet) is required - or both! Note: Mains-powered sump pumps, especially those powered by three-phase electric power, may feature several HPs motors, but these are mostly commercial units, rarely used at homes. The most common battery-operated sump pumps come with 1/6 HP, 1/4 HP, 1/3 HP, 1/2 HP, 3/4 HP, or even 1 HP motors. The most important feature of the battery-powered sump pump is the nominal strength of the pump motor, and it is usually given in the HPs. Battery Powered Sump Pumps Features and Specificationsīattery Powered Sump Pumps Features and Specifications.The sump pump backup battery must be strong enough to power the sump pump motor, and it must store enough energy to power the whole unit long enough to prevent as much damage as possible until mains power is restored. Battery-powered sump pumps are a type of emergency equipment that must operate reliably when required, and saving money on these pumps or their batteries may be a very expensive thing to do.
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