So, for the past 4 years I've been running two flooded 12 volt batteries in parallel being charged by 2x100W solar panels on the roof running through a 30Amp PWM controller and all has been right with the world until recently when one of the batteries went bad so I figure I'm going to replace both since they are of the same age.
The question is am I better off putting two 6V in series instead of just replacing the 12V batteries? From talking to the local interstate battery it sounds like I really wouldn't gain that much Ah wise by installing the 6V as the height restriction in the FWC won't allow me to put something 13" tall under the couch so each battery would only be around 235Ah and I can get close to 300Ah with a couple of 12V batteries for less money and will fit in my current battery boxes.
What am I missing here?
BTW, I've never had an issue with running out of power and was at around 220Ah with the battery setup that had been in.
The question is am I better off putting two 6V in series instead of just replacing the 12V batteries? From talking to the local interstate battery it sounds like I really wouldn't gain that much Ah wise by installing the 6V as the height restriction in the FWC won't allow me to put something 13" tall under the couch so each battery would only be around 235Ah and I can get close to 300Ah with a couple of 12V batteries for less money and will fit in my current battery boxes.
What am I missing here?
BTW, I've never had an issue with running out of power and was at around 220Ah with the battery setup that had been in.