KATOOM wrote:
What I'm replacing are two older group 27 Kirkland batteries. The only info they have, besides cranking amps, is 115 min reserve. Nothing pertaining to amps hr.
They've "worked" only in the sense that we can get by with them for a couple days but it would be nice to have some additional capacity and/or something which will hold a charge longer per the draw because we live very conservatively assuring we dont run out of battery in those couple days.
Solar in the future is possible but I cant say for sure.
As I mentioned before, I thought two 6 volts offered that advantage over two 12 volts. But if not then I've learned something valuable.
For an example, a 6v offers 220 amp hours, but you need two of the batteries. A 12v in the same price range, offers 105 amp hrs. Get two and you have 210 amp hours compared with 220 from the 6v. Both systems with the same price. That's pretty much a wash in my mind. The tradeoff being that the 12v's are useable if separated. Course you also have to keep in mind that you should only use 50% of the battery's reserve. So you're looking at 110AH's vs 105AH's Supposedly you will get more cycles from the 6v's before replacement but I'm not sure that is a significant #.
