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Title: I've experienced poor results over time
Review: These seem to work when new but after a year or so they seem to run the battery down all by their self. Internal losses seem to go up as they age. I replaced one a couple of years ago because it was running the battery down in a Miata. Now the one I replaced it with is doing the same thing. It will drain a new battery in 3 weeks. I would not recommend one for any vehicle that is not driven every day. Too bad as it is a great idea.
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