Part Time AGM Battery Maintainer
I have a Sear Platinum Group 34 AGM battery I use as an auxiliary battery for my portable 12v electric refrigerator. It runs the fridge when parked overnight (or for a couple of days parked) to take t...
Forum Discussion
Almot wrote:
Harold1946: my manufacturer is UPG (re-branded Panasonic). But this doesn't matter, same monthly drop of charge at ~3% at 68F and ~12% at 104F you will find in other brands as well, like Deka for example. Deka doesn't say that discharge below 60% will reduce the capacity, but you should understand that capacity is decreasing a little with every cycle of charge-discharge, and the deeper is the cycle, the more it's decreasing.Phoenix, AZ averages 90+ days a year over 100F.
I knew that people would not read, as usual :) ... To get 25% charge drop in 2 months, it has to be over 100F for 2 months continuously, every single hour, day and night. Not just 2 or 3 months a year with daily max over 100F.
I already understand it. Most are designed for 500 cycles of battery life. Just never heard of one that makes that statement.
If it did not matter I would not have asked. It matters to me.
