AGM Batteries and Charging them

  • flanders51
    Posts: 152
    May 19, 2015 at 1:15 pm #1545986

    Ok, I have a couple questions:

    1. I just bought two AGM size 30 batteries from Cabelas for my trolling motor. I think they should be a big improvement. I currently run two size 27 batteries and they are a “little” small for the compartment. Will my size 30 batteries fit in the tray or do I need to buy and install two new size 30 trays in my Alumacraft Trophy 175 boat?

    2. I have a 20 amp, 3 bank charger in the boat. It currently charges three size 27 batteries: 2 for the trolling motor and one cranking battery for the engine. The engine battery is a lead battery. So, can I, should I, use the AGM setting on my charger to charge all three batteries even though one is a lead battery?

    I know, tough questions. I don’t need a new cranking battery and I don’t want to spent $200 more just so they are all AGM. Thoughts?

    David Ellingson
    Posts: 37
    May 19, 2015 at 9:45 pm #1546077

    Don’t know about you trays, I would think they would handle size 30 batteries. As for the charger AGM batteries charge the same as standard lead acid. My charger only has two settings, Gel and AGM/standard lead. My starting battery is regular lead acid and deeps are AGM. Been charging them together for the last 7 years and they have worked fine.

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