HiTech wrote:
What is the spec for float voltage for the Optimas? My guess would be that 13.8v is high for a float unless that is before temp compensation and the actual voltage at 106 degrees is much lower, and they are outgassing quite a bit. My experience is that above 90 degrees battery temp my AGMs outgas very very easily as they near being fully charged. I don't remember off the top of my head but I think float at 90 degrees for the Dekas is near 13.3v. Optimas are probably a bit higher than the East Penn batteries.
Jim
Optima - wrote:
Recommended Charging Information:
Alternator:13.65 to 15.0 volts
Battery Charger (Constant Voltage) :
13.8 to 15.0 volts; 10 amps maximum; 6-12 hours approximate
Float Charge:
13.2 to 13.8 volts; 1 amp maximum; (indefinite time at lower voltages)
Rapid Recharge(Constant voltage charger :
Maximum voltage 15.6 volts. No current limit as long as battery temperature remains below 125°F (51.7°C). Charge until current drops below 1 amp.
Cyclic or Series String Applications:
14.7 volts. No current limit as long as battery temperature remains below 125°F (51.7°C). When current falls below 1 amp, finish with 3 amp constant current for 1 hour.
I remeasured today @ Noon.
Optimas = 108F
MS SS10 = 116F, jumpered at 14.4V
Turnigy Volts = 13.85, result of 116F ambient temp comp by SS-10
I will hook up the Turnigy to get the charging Amps and post around 3PM today.
I still maintain that I have never observed any out-gassing from either the Deka or the AGMs. If my AGMs are damaged, won't that be apparent when I run capacity tests next month?
HTH;
John
