Zero Dollar Wall Charger Topped Out At 13.56 Volts
Transformer type meaning it weighs a half pound. Rated 800 milliamps, 12 volts rating, 17.6 volts open circuit (connected to nothing). Connected to group 29 battery starting at 12.43 volts. Line voltage 121 RMS. Voltage value for maintenance should be good unless applied in Vladivostok or the Sahara.
Don't use a lightweight switch type charger for RV battery maintenance charging. They will not work. Only the obsolete dollar for ten dozen heavy type wall socket charger.
Verify voltage with a voltmeter. The lower or higher the line voltage the bigger or smaller the battery and rating of the charger in open circuit volts and amps will change the formula but changes will occur slowly. It ain't like harnessing the core of The Forbidden Planet. If the final charge rate is too low find another charger. Same for anything higher than 13.8 volts. Yes, incoming voltage WILL affect the final charge rate voltage, but it would have to jump up to the point where your house or rig electricals catch fire before the battery would overcharge.
Three days (72 hours) later the voltage had stabilized at 13.56 volts. Not one hundredth of a volt change in 6 hours.
Free to me brand new Skil (Bosch) lithium electric screwdriver. No charger. Removed 4 torx security screws, connected a 5 volt 1 ampere charger with jumper clips for six hours. Stopped charge at 4.5 volts disconnected. Sucker will snap your wrist now.
But there are those folks who cannot be satisfied unless they spend a wad on something.
Don't use a lightweight switch type charger for RV battery maintenance charging. They will not work. Only the obsolete dollar for ten dozen heavy type wall socket charger.
Verify voltage with a voltmeter. The lower or higher the line voltage the bigger or smaller the battery and rating of the charger in open circuit volts and amps will change the formula but changes will occur slowly. It ain't like harnessing the core of The Forbidden Planet. If the final charge rate is too low find another charger. Same for anything higher than 13.8 volts. Yes, incoming voltage WILL affect the final charge rate voltage, but it would have to jump up to the point where your house or rig electricals catch fire before the battery would overcharge.
Three days (72 hours) later the voltage had stabilized at 13.56 volts. Not one hundredth of a volt change in 6 hours.
Free to me brand new Skil (Bosch) lithium electric screwdriver. No charger. Removed 4 torx security screws, connected a 5 volt 1 ampere charger with jumper clips for six hours. Stopped charge at 4.5 volts disconnected. Sucker will snap your wrist now.
But there are those folks who cannot be satisfied unless they spend a wad on something.
