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Old 05-18-2019, 11:29 AM   #2
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City: Puget Sound
Country: USA
Join Date: Jun 2016
Posts: 442

I would stick with the three stage charger, just make sure the float voltage follows the manufacturer's guidelines for float voltage. IE: Lifeline specs the float charge for their AGM at 2.2 to 2.23 volts per cell. As far as the alternators B/A is spec'ed at 2.37 to 2.4 volts. You gotta measure it to know what to do. Bulk charging is constant current so as the battery gets charged the voltage will increase and shouldn't exceed the B/A spec.
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