Two 6 volt vs two 12 volt run time
I was just informed that two 6 volt batteries would run the residential refrigerator many times longer than two 12 volt batteries. I wonder if this is just hype?
Forum Discussion
I only use group 31 12V deep cycle batteries with a 225 minute draw of 23 amps and they last between 8 and 10 years before I replace them. If one of the 5 or 7 should go bad early, Just disconnect it form the bank and replace when the same battery is on sale as it's no big deal because I only lose 1/5 (20%) or 1/7 (14.3%) of my 12 volt amps available and why not save some money?
However, when I had a 4 battery bank of 6V batteries on one of our big Allegro MH, and 1 battery bit the dust, I had to disconnect 2 of the 4 6V batteries to maintain 12 volts (paired 6V batteries to make 12 volts) and it cut our stored available battery amps right in half (50%)! Made the inverter nearly useless for 110 AC. Will never have a battery bank of 6 volt batteries again!!! Learned a real lesson!
However, when I had a 4 battery bank of 6V batteries on one of our big Allegro MH, and 1 battery bit the dust, I had to disconnect 2 of the 4 6V batteries to maintain 12 volts (paired 6V batteries to make 12 volts) and it cut our stored available battery amps right in half (50%)! Made the inverter nearly useless for 110 AC. Will never have a battery bank of 6 volt batteries again!!! Learned a real lesson!
