To define your load and backup requirements, go to https://www.luminousnigeria.com/load-calculator/
Our easy-to-use “Power Consumption Calculator” will help you determine the precise total load requirements for your property!
You can use the following simple formula to calculate the back up time for each capacity:
Backup Time (in hours) = Battery Capacity (in Ah) X Input voltage (V) / Total Load (in Watts).
So assuming the the total load is 290 Watts;
If the battery capacity is 110Ah/12V:
Backup Time (in hours) = 110 x 12 / 290 = 4.5 hours
If the battery capacity is 220Ah:
Backup Time (in hours) = 220 x 12 / 290 = 9.1 hours
Luminous inverters have up to 12 months of warranty while Luminous tubular batteries have up to 24 months of warranty.