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the cheap one they sell is junk. Do they sell a better unit ?
I have 3 of the cheap ones and they have been working effectively for several years on boat batteries, RV batteries and on my Corvettes when they were parked for several weeks while we were travelling with the RV.
My oldest one is more than 10 years old and the last one I bought 3 years ago. None of the 3 have failed to perform but I do plug them into a protected outlet strip when they are in use.
I have 3 of the cheap ones and they have been working effectively for several years on boat batteries, RV batteries and on my Corvettes when they were parked for several weeks while we were travelling with the RV.
My oldest one is more than 10 years old and the last one I bought 3 years ago. None of the 3 have failed to perform but I do plug them into a protected outlet strip when they are in use.
I HAVE 2 DEAD BATTERIES BECAUSE OF THE CHEAP ONES.......not impressed
auto zone has one by a different name for 24.95 i think its made by schumacher. i think the specs are the same as the battery tender or battery tender jr (i dont know which one) check it out will save you some $$$$.