The StormPro model BA-50M, 1/2HP sump pump is designed to be operated on 120 volts AC. There currently is no battery capable of powering a 120 volt primary sump pump. The only possible options would be an AUXILARY POWER SYSTEM which will operate up to a 1/2HP pump for up to 10-12 hours continuous or 24-36 hours non-continuous, a complete BATTERY BACKUP SYSTEM or looking into the possibility of installing a STANDBY GENERATOR.