Jun 26, 2007 11:50 pm
Re: BATTERIES AND AMP/HOURS
Murray
I can help with the AH capacity but not the inverter/charger.
You are correct in wiring up the 6 batteries in series for your 12V, which means that your AH capacity won't change. The 8 Hr capacity of 720 AH means that if you completely discharged the battery over an 8 hour period, it would deliver 720 AH's, then it would have nothing left to give. Now, if you were to discharge them at a faster rate, you would get less than 720 AH, and if you discharged them slower than 8 hrs, you would get more than 720 AH.
Just a reminder that when stringing together batteries, you either add voltage or amperage, not both at the same time. So you correctly ran the 6 batteries in series for your 12V, which meant that your AH capacity didn't change. And of course the flip-side would be that you wired the batteries in parallel to have 2V with 6 X 720 AH of capacity. Also, remember that when you multiply your voltage times your amperage, you get your wattage. So 12V times 720 AH is about 8640 Watt Hours of storage, and a tag along with that is to remember to try to never consistently drain the batteries below 50% capacity. So don't use more than 4.32 KWh's of energy.
I hope this has helped. And again, I am not sure about the inverter/charger. Someone else to lend some advice?
Have a nice day, Ian