Need some battery advice!
I'm currently having had an issue with my Interstate 12V (dual) batteries in my Arctic Fox camper, in that after 3 days of boon docking, my fridge stopped working, thus realizing I must be below 6 vol...
Forum Discussion
jplante4 wrote:KX5002 wrote:
Why wouldn't you parallel 12 volt batteries?
I found this curious as well. If you don't parallel the batteries, how do you wire them? Is one just a cold standby?
Nothing curious, you just don't have two 12 volt batteries in the first place.
FLA batteries come in 2,4,6,8 and 12 volts and of capacities up to many thousands of Amp/hrs as you need.
Standard practice ( in the professional solar arena ) is to establish the required capacity first, then select cells to fit the desired voltage requirement.
for example: say you need 600 Amp/hr capacity and a voltage of 12 volts. you have several solutions:
1. a single 12V battery of 600 A/hr
2. two 6V 600 A/hr batteries
3. six 2 volt 600 A/hr cells
most often the choice of battery is determined by cost, load and expected lifespan. quite often it is actually more cost effective to use smaller voltage cells than one big multiple cell battery.
it all depends on the intended use.
I will be posting a battery/solar design tutorial soon to cover the issues I see here on the RV forums. there seem to be an increasing number of posts regarding solar/batteries, and too many conflicting answers..
