Inexpensive, easy to use protective covers to keep the ends of the connectors from touching, simple and effective. I've been using a Minnkota charger for both of my marine batteries and everything has been fine, but lately it's been overheating and eventually died. I researched this and am pleasantly surprised. Affordable and three times more effective than others. It charges my batteries faster and fuller, I will definitely buy again. Excellent purchase.
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