55 Amp Converter Charge Times
It it possible for a 55 amp converter (with a 14.4 volt quick-charge mode) to take a new Interstate SRM-24 series Marine/RV battery that's discharged to 11.90 volts and charge it to 90% (12.58 volts) ...
Forum Discussion
Well, decided to run a realworld, worst-case test. Discharged the battery to approx. 11.90 volts with the converter OFF. Then, turned the converter ON.
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Zero Hour:
Converter (110 volt) input current: 9-10 amps
Battery voltage (at battery terminals): 13.02 v
1st hour:
Converter input current: 5 amps
Battery voltage: 13.38 v
2nd hour:
Converter input current: 3 amps
Battery voltage: 13.56 v
3rd hour:
Converter input current: 1 amp
Battery voltage: 13.64 v
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I've noticed I usually read approx. 13.70 - 13.75 volts at the battery when it's fully charged with the converter ON, and 12.75 volts with the converter OFF and no residual charge voltage remaining. Tried reading the battery voltage in a static state with the converter OFF, but I couldn't get the residual charge voltage to subside enough by the time I made this post (continued to hover above 13 volts).
Am I correct in assuming the above "3rd hour" battery voltage reading of 13.64 volts is very close to a 90% charge?
Thanks!
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Zero Hour:
Converter (110 volt) input current: 9-10 amps
Battery voltage (at battery terminals): 13.02 v
1st hour:
Converter input current: 5 amps
Battery voltage: 13.38 v
2nd hour:
Converter input current: 3 amps
Battery voltage: 13.56 v
3rd hour:
Converter input current: 1 amp
Battery voltage: 13.64 v
-----------
I've noticed I usually read approx. 13.70 - 13.75 volts at the battery when it's fully charged with the converter ON, and 12.75 volts with the converter OFF and no residual charge voltage remaining. Tried reading the battery voltage in a static state with the converter OFF, but I couldn't get the residual charge voltage to subside enough by the time I made this post (continued to hover above 13 volts).
Am I correct in assuming the above "3rd hour" battery voltage reading of 13.64 volts is very close to a 90% charge?
Thanks!
