Before i had a 750W Inverter (12V input) and i use 2 x 12V (150AH) car batteries connected in Parallel.
With this configuration , i can keep my 2 Computers around 2 hours when there's no electricity.
Now my old Inverter is broken , so i've decided to buy another inverter. But this new inverter requires 24V Input voltage. So according to inverter's manual i should connect the 2 batteries in Series.
My question is :
With this new configuration , will i be able to keep again my Computers for the same time (2 hours) when no electricity or this new batterie's configuration will decrease this time ?
Thank you !
答案1
Just making my comments an answer:
Theoretically, yes, but it depends whether the efficiency has increased or decreased. Connecting them in parallel or series does not change the total energy (Watt Hours) of the bank.
I understand your confusion. I am not entirely sure why we use AH as an energy rating when WH seems to be less confusing. If you have two 12V 200Ah batteries in parallel, your system voltage is 12V with 400Ah which is 12V*400Ah=4800Wh. If you take two 12V 200Ah batteries and put them in series you get a system voltage of 24V with a 200Ah bank which is 24V*200Ah=4800Wh. Both have exactly the same joules of energy but different Ah ratings. (1 Watt Hour = 3600 Joules)