Constant what?
Constant current or constant voltage?
For How long do you employ this 'constant' charger when you employ it?
Number of total cycles accumulated in those 12 years, in your estimation?
Average State of discharge, when you do cycle them?
I got an estimated 1200+ deep cycles over a 6 year timespan with my most recent AGM, and easily a 100 of those were to 30% or below state of charge, but the average depth of discharge was in likely the 60 to 65% state of charge range. Prompt high amp recharges to full from their most depleted state, are what i credit to that impressive, in my opinion, lifespan.
If you've found a great formula/charging products for exceptional lifespan of Budget GC-2's, then please share how you did so.
