![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgwWDUDvtWi90W3zNO5FP_UPJ_ItXCoUiO9ea3ul__ijLZ_lclE7lPQxaUmFO8W9-YhOgE9uwf_MllkEsMqO0k1NF5QOjcfAZXorDYh7ZSWZ53QNZJUiXViZgEIJP3tqW_fqOAVdznV-x99/s320/inverter+300watt.jpeg)
Each inverter has efficiency, there are 40% and there is a high efficiency inverter 85% but usually average a 85% efficiency
Example:
1000 watt inverter which has a 85% efficiency can only be used for 850 watts
In determining the inverter needs to be considered are:
1. The number of watts you want in a back-up
2. Length of the desired resistance
1. The number of watts you want in a back-up function to choose an inverter that suits your needs
2. Old resistance desired function to calculate the required battery ampere to fit the needs of