How Many Hours Does An Inverter Battery Last. Batteries will be rated in Volts not Watts and have a threshold for Amp hour draw. The efficiency is the ratio of watt hours out of the battery on discharge divided by watt hours into the battery on charge.
This means that the battery will last 600 Wh1000W 06 hours. Your batterys capacity can also be expressed by the number of amps and how many hours your battery will last. A typical car battery with a 12v rating has an estimated 48 Ah capacity when fully charged which means that it can deliver one amp for 48hrs 2 for 24hrs and so on.
Of course there is a specific formula that you can follow but it will depend on how many watts load.
A 100ah battery will last 97 hours with an 85 efficient inverter. The blower motor and related 12-volt components of your propane furnace draw 7 amps while running. This is the DC current the inverter will use to operate the 1500 watt load. Meanwhile a 24-volt inverter system needs a batterys 10 DC Amps for every 200 watts.
