Battery Charging Problem ***UPDATE***
While dry camping in freezing weather, the charging system died for the dual type 24 house batteries (2002 Winnebago Mini). It appears to be a solenoid system. It failed two years ago and the RV s...
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This article is pretty good.
https://deepcyclebatterystore.com/the-battery-blog/how-to-charge-12-volt-6-volt-batteries/
"You have to force more electricity into a battery than it would like to accept or it won’t be fully charged. To charge a standard 12-volt battery, you have to bring it up to above 14 volts (amount varies with the type of battery)"
"The most accurate method of measurement is using a hydrometer to measure specific gravity"
For sealed batteries:
Use a D.C. voltmeter to get the battery voltage
https://deepcyclebatterystore.com/the-battery-blog/how-to-charge-12-volt-6-volt-batteries/
"You have to force more electricity into a battery than it would like to accept or it won’t be fully charged. To charge a standard 12-volt battery, you have to bring it up to above 14 volts (amount varies with the type of battery)"
"The most accurate method of measurement is using a hydrometer to measure specific gravity"
For sealed batteries:
Use a D.C. voltmeter to get the battery voltage
