Hi all, I have a Diamond in the Rough that has two 12 v batteries running in paralllel and a 100w solar panel for charging. The batteries were new last summer and they were trickle-charged in our garage over the winter. We took it out overnight and I found that the voltage meter was reading under 12 volts and our Norcold wasn't keeping cold. It hadn't occurred to me to connect them in series Instead of in parallel. Would that have done the trick? Thanks in advance.
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Thanks folks - much appreciated!
Hi David, I actually run 3 batteries. I will explain. I have a deep cycle for my trolling motor and to stop it from running down I keep it in the toolbox wired in parallel and even take it along on trips. No point wasting the battery. I have lost a couple previously from not keeping them charged. I used to have a inexpensive charger and it didn't do the job. I ended buying this -
So far no issues. When charging my the voltage usually shows around 14.7 volts depending which part of the cycle the charger is on. The battery indicates (well 3 batteries) 12.9 when fully charged.
And Peter is correct series doubles voltage and created the same amperage while parallel keeps the same voltage but can produce double the amperage.
If you hook them in series you end up with 24 volts not 12 volts. Not a good idea, you will damage all your equipment (bulbs, fan and fridge)