Inverter Battery Backup Time

This is the most common complaint raised against the home inverter system.

Inverter battery backup time.

Similarly battery is an integral part of the inverter. My inverter is not giving sufficient backup. Inverters convert dc voltage to ac voltage. Backup time battery ah x 12v x n x efficiency of battery load in watts.

If you wish to have a backup for 6 hours with a 380 va inverter and battery input voltage of 12 v the total battery size would be. Similarly the battery is an integral part of the inverter. Battery size inverter va rating x usage time in hours input voltage. We expect maximum backup time from the inverter system with a tubular battery but unfortunately we get half or less backup time than we expect.

The battery backup time in hours can be calculated using following formula. 1 tube light 40 watts. 1 ceiling fan 75 watts. Where battery ah ampere hour capacity of battery.

380 x 6 12 190ah. Backup time battery ah x 12v x n x efficiency of battery load in watts where battery ah ampere hour capacity of battery. The performance of the inverter depends on the connected battery and vice versa. The inverter system also has some charging system that charges the battery during utility power.

To help you make the right purchase we have. The performance of the inverter depends on the connected battery and vice versa. For further information we recommend reading our buying guide. Back up time of inverter battery battery volt x battery ah rating total watts on load so if a person use 1 ceiling fan 1 tube light 2 15watts cfl simultaneously with 150 ah battery then the backup time will be calculated as.