I have 2 6V golf cart batteries in my 5er. Batteries are old and due to be replaced. When I checked the water level, the level was a little low but it was obvious one of the batteries has cooked the w...
I traced down the case on my Costco group 78 cranking battery and it turns out to be a Johnson Controls. It is 11% heavier than comparatively priced Mexican Costco batteries with double the guarantee.
May I suggest you check the amp hours and weight and post it? Some GC220s are 10% fewer amp hours than others.
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