Forum Discussion
westend
Jan 20, 2014Explorer
Here's my regimen when the lights are left on in a vehicle and assumes a battery in the middle of it's life cycle: Remove cell caps and check water level, hook up shop charger at the 10 amp rate (mine really pushes the juice), Read the amperage meter on the charger and I can usually tell SOC and what the battery is doing. Measure with a meter, if handy. For a good sized truck battery, I leave the charger at 10 amp for 1-2 hrs. Occasionally, while I'm keeping my eye on the battery, I'll flip the charger over to the 200 amp rate, momentarily. After an hour or two, I check water level, fill if necessary, and I select the 2 amp rate letting it charge overnight. If the battery is older it may need another dose of the treatment above.
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