441 model 12V Battery Back-Up Sump Pump System w/ Alarm

Liberty Pumps

Brand: Liberty Pumps

Mfr Part#: 441

UPC#: 671812108170

Availability: In Stock
Usually ships: within 1 business day
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$282.00 / each & Free Shipping
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  • Description
  • Literature
  • Reviews (2)
  • FAQs

The Liberty Pump 441 is a battery back up sump pump system with an alarm. The Liberty 441 is a 12V battery-operated system that works automatically when power fails. It is designed only as a temporary means of pumping when a primary sump pump has problems with normal operation. The Liberty 441 is not intended to be used as the main sump water removal pump. The Liberty Pump 441 is a high output, submersible pump with an automatic, mercury-free switch. It comes equipped with a control panel, battery box, 12V charger and 1-1/2" or 1-1/4" connections.


The Liberty 441 features an advanced 5-stage charging system. This system tests the battery and maintains a maximum charge without running the battery down or self-discharging. A sophisticated charging algorithm continuously tests the charging process from start to finish. Frequency of pump cycle, length of running time and pumping head will vary the lifetime of battery operation. Under a continuous-run situation the battery will last up to 4 hours and up to 30 hours in intermittent operation.


This back-up sump pump system is not to be used on flammable liquids or chemicals, only use to pump clear water. The battery charger for the Liberty Pump 441 must be kept dry and away from damage.


  • Audible in-use alarm and light;
  • High output 12 volt submersible pump;
  • Automatic, mercury-free float switch;
  • Control panel;
  • Works with marine-type deep-cycle batteries (not included with system) Type M27 recommended;
  • Reverse battery and short circuit protection;
  • 12 volt charger;
  • Automatic start-up;
  • Advanced 5-stage charging system;
  • Red "Fault" L.E.D. warns of a problem with the battery or charging process;
  • Tee, check valve and bushings for 1-1/2" or 1-1/4" connections;
  • Easy wiring with slip-on connectors and terminal block;

Technical Specifications:

  • Connections: Adapts to 1-1/2" or 1-1/4" Discharge;
  • Charger Input: 120Vac, 0.19Aac, 60Hz;
  • Charger Outout: 12Vdc, 900mA;
  • Safety Timer: 150 hours;
  • Battery: 12 Volt DC;
  • Recharge Time: Approximately 100+ hours to fully recharge a 27M battery in a "dead battery condition". Approximately 75 hours to recharge a 24M battery. Industrial standards define a "dead battery condition" as 9 Volts or less;
  • Weight: 12 lbs.;


3 years manufacturer's warranty
441 model 12V Battery Back-Up Sump Pump System w/ Alarm has an average 4.5 out of 5 rating based on 2 user reviews.
1 of 1 people found this review helpful.
Liberty back-up sump pump.
By Duncan W. (from Suffield, CT) on 6/8/2012
I am very pleased with the pump.I did have to make some modifications,bushings etc.I also added a union,between the pump and the check valve,so I can remove the pump .I like the alarm feature,and the pump and charger work great.Many thanks.Duncan.
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Great Company
By Rick S. (from Ohio) on 5/18/2013
I purchased this from Pex Universe and it was shipped out the next day, couldn't ask for more. The Liberty pump looks to be a good unit. The very loud sound it makes when activated was a huge plus. However, for the price they could have included the extra couple plastic threaded elbows and nipples they said you would need to purchase separate. This system uses all threaded elbows, check valves, etc and finding threaded parts in 1.25" is hard. So I had to convert everything to the slip on style by purchasing a new slip on check valve & a couple elbows. If you purchase this, I would spend the extra $20 to purchase a better check valve and to convert everything to slip on. The check valve that's included is very small and cheap looking. The new one I purchased has the 2 rubber couplings and 4 hose clamps to hold it in place. Overall it appears to be a solid product, it just needs a few engineering tweaks to be perfect.
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