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Old 10-10-2019, 12:27 PM   #17
AKDoug
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City: Kenai, Alaska
Country: USA
Vessel Name: Melanie Rose
Vessel Model: 1999 Willard PH
Join Date: Feb 2013
Posts: 802
I normally store my boat from October to May with no charger (or charging) on the house bank or start battery and my batteries are still in good shape in the spring. I do get them completely topped off before going into storage, usually by running for a couple of hours before puling out for the winter.

Unless there is a draw, they should still be in very good condition after only a month. Check the voltage before turning the system back on to see if they have been run flat. I have 400 AH in my bank, and they top off in under an hour running with a 100A Balmar alternator unless I have been on the hook for several days. The smart charging system tells me where I am in the recharge cycle.

My batteries are also Lifeline...
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