Posted by John T on January 05, 2023 at 08:09:42 from (174.211.100.220):
In Reply to: Amps vs volts posted by rrlund on January 05, 2023 at 06:36:27:
rr Good Question and the answer as to how much voltage and/or current a charging source delivers into a battery THE ANSWER DEPENDS upon the chargers Voltage Regulation scheme and circuitry and the battery condition and its State of Charge SOC.
Take for example more like constate voltage charges (around 13.4 to 13.6 or so) used on older RV's and other applications, if left alone they could overcharge and actually damage a battery perhaps boil over and out gas so much the electrolyte levels fell below the plates !!!!!!
In later years so called SMART 3 stage controlled and regulated chargers were developed that for example might BULK charge around 14+ Volts,,,,,,,,Absorption charge around 13.6 Volts,,,,,,,,FLOAT Charge at maybe 13.2 Volts, they would maintain proper SOC and NOT damage batteries if left on.
Even absent later smart regulated and controlled charging technology a battery under charge and on its own would accept less charging as its voltage rises closer to the chargers voltage. If theres no potential voltage difference theres no current flow WELL DUH
As far as automotive alternators and older generators and their Voltage Regulators, subject to the battery condition and SOC, their Voltage Regulation scheme and circuitry determines the charge they deliver
John T NOT any electronics or battery charging expert but believe this to be true, if any engineers who are experts in batteries and charging maybe they can weigh in here and educate all of us !!!
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