Forum Discussion
ktmrfs
Jul 03, 2023Explorer II
Boon Docker wrote:
Always thought that 13.6v was the typical charging voltage for LA batteries
not for a flooded cell charge cycle. once charged float level, yes, but even in todays cars it's common to see a charging voltage in the 14+ V range if the battery is partially discharged or just after starting. Once charge current drop then the regulator will drop back the voltage to the 13.2-13.6V range.
Now non FLA batteries, (AGM etc.) have a different charging profile
On many of our camping trips when we boondock have other campers ask how we can get buy with only running a generator for an hour or so and not have dead batteries. (with my charger I can stuff 100A into four 6V GC batteries if they are down below about 70%) Well, with a proper charger, no problem. with the typical WFCO charger that is installed, I go over, hook a clamp current meter and voltmeter to their battery and show them how low the charging current is and why they need to run the generator many many hours and the battery still doesn't make it through the night.
Then I explain the FLA charging profile and the problem with a charger only putting out 13.6V or less and what the options are in terms of better chargers.
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