Batteries for AF990
I'm looking for opinions on new batteries for my 2013 Arctic Fox 990. I bought it used and it came with a couple of group 24 12V batteries that are mismatched. One is a cheap automotive battery and ...
Forum Discussion
From these responses I was inspired to do some research into the differences between AGM and Flooded. Looking at actual lifecycle charts for Lifeline AGM vs Trojan T-105 which are 2 popular choices here:
DOD Lifeline Trojan
20% 2800 3000
30% 1800 2100
40% 1500 1500
50% 1200 1050
The AGM curve is flatter, so there is an advantage beyond 40%, but a disadvantage before it. Since we all mostly discharge to about 60% (40% DOD), I'll call it a wash. Even 1000 cycles is a LOT. Since batteries only last about 7-years tops, that would be 142 cycles per year, which is far beyond the number of days most of us use our TC's dry camping.
Wintersun was saying that Flooded have an advantage when not fully recharged, which is a different issue than DOD. I could not find any verifiable technical data supporting that claim. Post it if you've got it.
There are various advantages/disadvantages to both types and I won't go into that here. I'm leaning toward the AGM's because I will be able to seal off the battery compartment vents (in the winter only) to keep the batteries warmer. I also don't really like putting water in the inner battery since it's really impossible to get to unless I remove the outer. All this is offset by cost of course. The battery fill system looks interesting, but it's problematic for winter use since there is freezable water in the fill tube.
DOD Lifeline Trojan
20% 2800 3000
30% 1800 2100
40% 1500 1500
50% 1200 1050
The AGM curve is flatter, so there is an advantage beyond 40%, but a disadvantage before it. Since we all mostly discharge to about 60% (40% DOD), I'll call it a wash. Even 1000 cycles is a LOT. Since batteries only last about 7-years tops, that would be 142 cycles per year, which is far beyond the number of days most of us use our TC's dry camping.
Wintersun was saying that Flooded have an advantage when not fully recharged, which is a different issue than DOD. I could not find any verifiable technical data supporting that claim. Post it if you've got it.
There are various advantages/disadvantages to both types and I won't go into that here. I'm leaning toward the AGM's because I will be able to seal off the battery compartment vents (in the winter only) to keep the batteries warmer. I also don't really like putting water in the inner battery since it's really impossible to get to unless I remove the outer. All this is offset by cost of course. The battery fill system looks interesting, but it's problematic for winter use since there is freezable water in the fill tube.
