Sum Pump Battery

Are there any available battery “additions” and or adaptors that can be added to existing electrical sump pumps without having to install an additional back up sump pump for usage in the event of a power outage.

I’ve heard of people using standard UPS’s. Since they are so widely used in computers, you might find one on discount with a rebate. :slight_smile:



Like anything else it is a $$ and length of time that you need the pump to work issue

Might look into some bilge pumps for boats. They run on 12 volt DC and one can keep them charged from a car if electrical power does not return for a long time.

Do not forget maintenance, testing, and fuel for the car. Just remember how much H20 that you must pump if things go bad.

UPS’s for computers will sort of work but most do not like motors and are very inefficient. They are also built to be just enough power to allow you to shut down the computer

Batteries require maintenance and extra safety which most people do not understand.


If your water table is such that you need a backup I would install a backup. I’ve been on too many jobs as a plumber to know the importance of one. You can use a marine deeper cycle battery. I would also recommend a water alarm.

Back-up batteries are available from Lowes or Home Depot. I recommend them on any inspection that has a sump pump. This area is susceptible to violent storms and power outages are frequent.

Heavy rain + no electrical power = need battery back-up.

If by chance you are on Town water there is a good water powered pump at Home depot that does a great job .
Worked good last power outage did not need to get out My generator .
Cost about $80:00 Canadian thats about $65:00 in real money.
I do test it evry so often to be sure Works like new and never bneed to buy batteries for it
Roy Cooke


That is a first class idea


Most sump pumps are 110 volt AC. DC power supply won’t run an AC pump.

The battery back-up includes a smaller pump that will handle the water removal until the power returns. Generally, the power isn’t off long enough (more that 6 or 7 hours) to cause damage. The average cost of a back-up system is $400 to $600. That’s a lot less expensive that the damage that can be caused in the basement if the water isn’t contained.

There are batteries with converters that will operate an A/C motor at about 10 -12 amps for a short period of time (usually long enough, though) at a cost of $1500 to $3000. I don’t see those as cost efficient.

yes, a device for adding a battery to an existing pump does exist. it is called the Sump Pro. it uses 2-12 volt batteries in series for a total of 24 volts. it has an inverter which converts the 24 volts to 120 volts AC to run your existing sump pump.

However, it is more expensive than a regular battery backup pump. it is a good choice for backing up a sewage ejector, since they don’t make battery powered versions of those. however, for a regular clear water applications, i prefer a regular battery powered back up pump since its cheaper and can also function as a second pump if your main one fails even if the power is still on

The Xantrex Powersource 1800 will do the job. Plug it into the mains and the sump pump into it. Automatically cuts in when the power goes out and charges when the power is on. I’m gonna get one as soon as I have $350. But, again, it depends on how often your sump pump runs. Solutions like this are only any use if power is not out for very long, or if your pump does not go off very often.

Ran into one just last week. The only info I could find is that it provides up to 2 hours of power, not very long for a sump pump.

I’ll try the photo again, it was too big.


2 hours might be plenty if the pump does not operate that often. And I will keep mine off the floor when I procure one. If you’re right and it does run flat, the resulting flood could cause some problems with the unit when power resumes.