Watt Hrs vs Amp Hrs
This article helps explain these ratings and raises a question wrt battery charging older vs newer LFPs too. Not sure if this also applies to other battery types or if it matters with any when you me...
Forum Discussion
MEXICOWANDERER wrote:
100 amp hours @ 12 volts -- 24 volts 120 volts.
Amp hours is a shortcut. It is an assumption figure. You know how much energy you require. To say pump 100 gallons of water. Is the pump going to deliver the same gallonage at 13.6 volts as it does at 12.1 volts?
Though this is true the pump will pump nearly the same gallonage at 12 as at 14. the current will change. It it may well increase as the voltage DROPS (or the other way around. Now you could read total watt hours and yes that would work.
But let's say you have a 12 volt system
Ok, two GC-2 Six volt batteries, to make math easier let's round 'em down to 200 amp hours at six volts or 1200 watt hours. Put 2 in series and now you have 2400 watt hours... but it's still 200 amp hours.
That is the point of it all..
And there is so so much more when you go beyond the basic.
