AGM Batteries - Any downside?
Hi, I am going to have to replace my single 12v Battery soon, for our TT (it is leaking from the top). Doing some research, I have found a lot of good information on AGM type batteries. I see...
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One thing I noticed in my UPG AGM: it says that if self-discharge will reach 60% SOC, "charging may fail to restore full capacity, don't let the charge reach this level". Same in Decka manual, AFAIK. Must be very common. Again, - this is for self-discharge and I don't know if in normal operation a single-time SOC below 60% will have serious consequences. Note that AGM takes a lot of time in storage to reach 60%, much longer than flooded.
"Higher prices" of AGM? Not sure. Though life expectancy of AGM is not clear yet, conditions of use/abuse do matter. Unlike flooded, AM manufacturers are silent on the issue of equalization, only Lifeline/Concorde tells how to do it in AGM and when.
Back to prices...Paid $180 for 110 AH 12V AGM, not the cheapest brand though not the most expensive either. The cheapest flooded GC 225 AH 6V (equivalent to 112 AH @12V) cost what - $130? And, if you can't use 6V, then 12V flooded tend to cost higher within same brand, so you'll pay close to $180 for 110 AH flooded.
"Higher prices" of AGM? Not sure. Though life expectancy of AGM is not clear yet, conditions of use/abuse do matter. Unlike flooded, AM manufacturers are silent on the issue of equalization, only Lifeline/Concorde tells how to do it in AGM and when.
Back to prices...Paid $180 for 110 AH 12V AGM, not the cheapest brand though not the most expensive either. The cheapest flooded GC 225 AH 6V (equivalent to 112 AH @12V) cost what - $130? And, if you can't use 6V, then 12V flooded tend to cost higher within same brand, so you'll pay close to $180 for 110 AH flooded.
