If in doubt , remove the batteries for a complete warm up, then charging and load testing , most battery or auto parts stores will load test for free.
Freezing will usually kill any lead acid battery.
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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