So after my inverter Cut off, I concluded the batteries were no good, as soon as the inverter the total voltage (of the 2 Trojan 6v batteries in series) dropped to 2v and when switched off slowly rose back to around 10v. So I bought 2 brand new 90ah 12v batteries to achieve 180ah. Previously with the trojans I had 250ah. But 180ah should be enough.
My question is that on the internet a lot of people suggest against using 2 12v batteries in parallel, please can anybody suggest why? And a possible solution.
If I do go ahead with this, what would be the best way to charge the 2 batteries, (whilst the are connected to each other, or disconnect them from each other and then charge.