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Old 06-02-2010, 08:13 AM   #15
Rivet Master
1975 29' Ambassador
Reno , Nevada
Join Date: May 2003
Posts: 1,351
re "Then you probably have AGM batteries (or you SHOULD!)" -- why? They cost 2x, last maybe 1.5x, still need proper battery compartment. I mean, they are nice but I can't see pushing it too far.

re: "the old Pulse Width Modulation (PWM) style. It surely has it's limitations" -- the advantage of MPPT is not that much for small installations (under 500 watts) like you'll find in an RV.

What is important in either a converter or a solar charge controller is good charging smarts coupled with a maintenance mode that will inhibit battery sulfation during periods of minimal use. Examples of these would be the ChargeWizard based converters or the BatteryMINDer charge controller.

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