Adding a second battery?
My new to me TT has a 12V Interstate deep cycle marine/rv battery, spm-24. Looked on line and it offers 140 min. at 25A and it looks like I'm could use as much as 10 amps an hour without the furnace ...
Forum Discussion
Tiggs wrote:
I just picked up two 6V CG2 Duracell Golf Car batteries at Sam's club.....
This battery is rated at 215 AH at 6 volts. That is equivalent to 108 AH at 12 volts. So for two batteries you have 215 AH at 12 volts. If you discharge to 50 percent, you can use 108 AH.
You mentioned pulling 10 amps for a TV and other uses. That will give you about 10 hours of use.
You mentioned draining your previous battery a couple of times and thought that was no big deal. I would recommend you never drain your batteries. Draining batteries even once seems to greatly shorten battery life. You need to monitor battery bank voltage during use. If you are pulling 10 amps you can drop the volts down to about 12.0. With no load you can drop to about 12.2. I would not go lower on a routine basis.
