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I have 2 Trojan 12 225 ah on a 12 volt system, they have been connected to the charge controller and inverter for about a 11 ½ months. Because is a backup system they have been rarely use (just for the occasional blackout), maybe a 8 hours and never discharge less than 12.9 volt. Because the...

Hi I’m new to solar and learning... I have 2 Trojan SPRE 12 volt 225. Recently I was advice by a friend to use the @ 20Hr rating instead of the 100 ah for programming the capacity on my Renogy Rover charge controller. The question is if I use the 225 x 2 (550) or the 204 x 2 (408) that is the @...