Battery backup for serious sump pumps

1/2HP battery backup inverter/charger

3/4HP battery backup inverter/charger

Model	Price
PST-822PS 1/2 HP pump battery backup, 1200 Watts	$674 Add to Cart
PST-1622PS 3/4 HP pump battery backup, 1800 Watts	$869 Add to Cart

These are innovative power stations designed to operate your pump during power outages. Installation is straightforward, just plug it into the AC, plug the pump into the backup and attach a 12V deep cycle battery. The battery backup will automatically charge the battery and wait on standby until the power drops out. Any sized battery can be used, letting you choose how much backup time you need. When the power returns the battery backup electronics switches the pump to wall power and starts to charge the battery. Back up tome is proportional to battery size.

Specifications

Pumping capacity	3000 gal/hour on a 10ft rise with 1/2 HP pump 5000 gal/hour on a 10ft rise with 3/4 HP pump
Battery charging rate	20 Amps, with multistage charging and float mode
Recharge time	A 200 AH battery can charge in 10 hours
Backup time	A 1/2 HP pump will run about an hour continuously from a 200 AH battery A 3/4 HP pump will run about 45 minutes continuously
Pumping capacity	Either pump will pump about 3000 gallons on a 200AH battery, or 300 ten-gallon cycles.
Maximum battery capacity	You can put as many 12V batteries in parallel as you like, extending the run time for as long as you want

Recommended batteries: Sealed lead acid batteries are compatible with this application, for example this 120AH model https://www.powerstream.com/store/bp120-12.htm