Solar charger for dual batteries
Hello, this is my first post and I hope someone can answer my question. My wife and I just bought an 18' travel trailer so I'm trying to set it up the way I want it. We are always dry camping so batte...
Forum Discussion
Mlyegge wrote:Nope, that is probably the total CCA (cold cranking amps) you have. If it's a marine deep cycle/starter hybrid and is a group 27 or so, you most likely have 75AH in each battery. A good rule of thumb for battery discharge is half of the capacity so if you have two batteries, each 75 AH, your usable capacity is 75AH.
My batteries have a combined amp hour rating of 1050, after 3 days my batt indicator said weak but I did'nt notice any change in the lights or blower speed.
You can't maintain batteries with those cheap LED panel lights. They are known to be off by a lot. A good hydrometer and a multimeter are the best for that job.
Good tutorial for batteries:12 volt side of life
Good advice on solar installation but some of it is dated because of module prices:Jack and Dan Meyer
