Question about battery capacity when wired in series vs. parallel

2 Posts
Aug 30, 2015 07:44 pm
Question about battery capacity when wired in series vs. parallel

Hello,

I have 4 150 amp hour batteries. When wired in parallel, this would give me 600 amp hours at 12 volts.

If I wire it in series, I would get 48v at 150 amp hours.

The question I have is when wiring in series, with the reduction of amp hours, do you actually loose run time? If so, other than cable size, why would you?

Thanks,

Rob
 
462 Posts
Aug 31, 2015 11:28 am
Re: Question about battery capacity when wired in series vs. parallel

Robert, no. If an appliance is say 48 Watts, if you use 12 volts then it draws 4 amps, if you use 48 volts then it draws 1 amp. Watts=Volts x Amps. So run time would be the same. Operating voltage is usually what drives your setup for both the appliance and the inverter.
The only benefit of using a higher voltage is smaller current so smaller gauge wire, as you mention, which tends to be cheaper and easier to work with.
 
2 Posts
Aug 31, 2015 06:42 pm
Re: Question about battery capacity when wired in series vs. parallel

Thanks, makes sense now!
 

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