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battery tender
My '06 OEM 12v battery died on me last weekend. I had it checked out and the battery is bad. It has only been about 4.5 years with 17,000 miles on the odo. The X5 doesn't see much action and sits in the garage most of the time so it wasn't surprising it died so early.
I'm thinking about purchasing a battery tender. Is it safe to connect the charging wires to the front jump start terminals 24/7? How much electricity does it use? I'm not sure how cost effective it would be since the new battery has a 36/96mo. warranty.
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