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SCWisconsin | Several days before I started my Volvo Semi Tractor, (This spring), (4 battery parallel setup). I decided to connect a small battery charger. I put it on 2 amp slow charge.
To my surprise a few days later, the reverse polarity red light was on. Oh-boy I thought, I wrecked the batteries. I checked, double checked, triple checked, Nope; I hooked up properly.
Good news, truck started right up. Good cranking.
What happened? or caused this?
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Battery Charging Surprise
