FURNACE FAN POWER REQUIREMENT

old guy wrote:
you will benefit with more power with the 6's then with one or even with using two 12's. the 6's will last longer

A generalized statement that simply isn't true - a pair of G31 12 volt deep cycle batteries wired in parallel offer approximately the same AH capacity as a pair of GC-2 6 volt deep cycle batteries wired in series. For those running heavy loads with an inverter a pair of 12 volts can actually be preferable as they're more likely to suffer less voltage drop under heavy inverter load than will a pair of 6 volts. The devil is in the details. ;)

About 7 amps.

Old adage ---One 12V battery good for One night of furnace

Course your typical RV 12V battery is roughly 120 AH

Two 6V batteries.......12V DC BUT higher amp hour ratings.....closer to 200 AH

(TWO 12V batteries wired in parallel ----same 12V but double amp hour----12V/100AH each equals 12V/200 AH)
(Two 6V batteries wired in series........double voltage but same amp hour----6V at 200 AH each equals 12V/200 AH)


SO TWO 6V can provide MORE AH then ONE 12V

What is AH Rating of current 12V?
What is AH Rating of the 6Vs?

I used two 6's when elk hunting and recharged the next day. at first i used two 12's and then switched over to 6's. you will benefit with more power with the 6's then with one or even with using two 12's. the 6's will last longer