Bought a pair of Tender Jr. in 2012. I'm sure they have paid for themselves by extending the life of my expensive lead acid batteries. There are many reviews here proving this is a quality product that has been around for a long time. I would like to add that the Battery Tender company Deltran stands behind their products. One of my "Juniors" recently retired after four years of continuous service. I emailed the company and received a quick response. I sent the unit back and got a brand new replacement covered by the 5 year warranty. You can't go wrong with this product or this company. Edit: For those considering this product. This is not a charger. It is designed to keep batteries fully charged. There are negative reviews from people who didn't understand what they bought.
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