I have AGM batteries and they are charged exclusively by the alternator or solar panel. In neither case do I know of a way to regulate the charging for compatibility with AGM. The charger for shore power is set for AGM, but I rarely use it. Is there something I should be doing with the alternator with the AGMs? Thanks- Dave
S/V Aries 1990 C&C 34+ New London, CT > On Oct 16, 2018, at 11:10 AM, Rick Brass via CnC-List <cnc-list@cnc-list.com> > wrote: > > You should also be aware that there are different types of chemistry in AGM > batteries. My new ProNautic charger has 4 different programs for charging AGM > batteries, and at least one of those is pretty much identical to the programs > available for lead-acid. But the instruction manual for the charger tells you > to be sure to contact the battery supplier to identify the exact type of AGM > you are using so you can be sure to setup the proper charging profile. > > Have you thought about going to Lithium batteries? A boater on my dock is in > process of installing 4 of them on his O’Day. Cost of the batteries is about > $300 each – which isn’t dramatically higher than good AGMs, His bank will be > between 400 and 500 AH (I forget exactly what he told me), but with Lithium > batteries you can use more than 50% of the bank capacity without harming the > batteries… you just need the correct charge profile (and a higher capacity > charger). > > Rick Brass > Washington, NC > > >
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