Charging AGM Batteries
I was looking for info on trying to charge, recharge AGM Batteries. If a convenional automatic charger is set to the deep cycle 2 amp setting, will this over charge the AGM Battery? Constructive comme...
Forum Discussion
I have to believe that folks are not going to wake up at dawn on 4 July in Bad Water Death Valley and run outside and charge their batteries. "Yeah I found out the hard way that 13.6 was too high a float voltage at 50C"
Most folks are definitely not happy camping where battery temperatures start out at 35C.
So I abbreviated my answer. For 90% of campers 14.7 is fine.
If I must I'll repeat it again:
If time is not an issue, limit the charging voltage down from 14.7. When I discharge a flooded battery 20% in less than 24 hours and then connect to public power to recharge, I will limit charge rate to FIVE PERCENT of A/H capacity until 15.0 is reached then reduce to float. Of course I adjust for temperature if I see camels or penguins outside.
It's when the aggregate total price, the total cost of "babying" batteries with a reduced voltage limit threatens to cost more than the purchase price of the batteries is when I crank the voltage up to 14.7 It doesn't take long for the price of fuel, generator wear out, and GOING TO GET MORE FUEL adds up to more than purchase price the batteries.
Most folks are definitely not happy camping where battery temperatures start out at 35C.
So I abbreviated my answer. For 90% of campers 14.7 is fine.
If I must I'll repeat it again:
If time is not an issue, limit the charging voltage down from 14.7. When I discharge a flooded battery 20% in less than 24 hours and then connect to public power to recharge, I will limit charge rate to FIVE PERCENT of A/H capacity until 15.0 is reached then reduce to float. Of course I adjust for temperature if I see camels or penguins outside.
It's when the aggregate total price, the total cost of "babying" batteries with a reduced voltage limit threatens to cost more than the purchase price of the batteries is when I crank the voltage up to 14.7 It doesn't take long for the price of fuel, generator wear out, and GOING TO GET MORE FUEL adds up to more than purchase price the batteries.
