Calculate the backup of battery of 100AH supplying a load of 100W and the supply voltage is 12V.
Answers
Answer:
T = V x Ahr x Eff/P
Where;
T = Time in Hours
V= nominal battery voltage
Ahr = the AmpHour rating of the battery
Eff = the efficiency of the inverter system
P=Watts of your load
There are many other issues which need to be accounted for.
Battery ratings follow a standard which varies by battery type. If the AH rating is based on 8 hours, but you discharge it in 4 hours, you will not get as much energy. If you discharge in 16 hours, you should get more energy.
Temperature also affects performance where colder temps reduce energy and higher temps typically increase energy.
Battery age typically reduces performance
Inverter efficiency at the load you are operating needs to be determined. It could be anywhere from 60% to 97% efficient. If you bought it off a shelf, I’d guess 70% efficiency to get close. Efficiency ratings above 95% can only be achieved with state of the art inverters in ideal conditions.
Answer:
= 12hours
Explanation:
battery capacity=100AH , input voltage=12v , total load= 100w
Backup time= battery capacity( input voltage/total load)
= 100x(12/100)
= 12 hours