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West central ND | Plus use battery maintainers. Yes those little things work on big batteries. Intermittent use with long periods of no use makes the plates sulfate together. We have 4 group 31 on an old truck that only gets used around the yard. One maintainer for the 4 batteries keeps them in good condition. We must have about 15 of them hooked up whenever the vehicle or tractor is going to sit for more than a month or so. Summer and winter. | |
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