Some battery questions!
Hi
I will be staying off grid for 4-6 nights and am very nervous about running out of battery!
I have just checked my Van and it has a NUMAX battery but I cannot see any indicator to capacity although I am sure I was told it was a 90Ah when I purchased the van (second hand).
It has never shown fully charged on the panel in the van so am considering changing it so here are my questions:-
1 - Is there any reason not to fit the largest Ah battery you can get? I have seen a 120Ah NUMAX exactly the same dimensions as my existing battery. Is there any reason not to fit this as a replacement?
2 - If I do get the 120Ah and the old one is 90Ah, is there any reason why I cannot connect them in parallel, as this should give me loads of capacity?
3 - It appears the old battery has two terminals for each of + and - I assume I can connect from the old battery to the empty connector on the replacement?
4- Really dumb question, if wiring in parallel negative to negative and positive to positive?
5 - If I do wire like this, will it cause my Sargent charger (solar panel) any issues?
6 - Can I use standard jumper cables or is there a spacial cable I should use?
7 - Anything I have forgotten to ask?
Many thanks for all the anticipated helpful answers!