For the past 20 years when a battery read 10.5 volts it was time to pitch it.After finding your sight and purchesing this unit,(With simple instructions)I have already saved 6 12V batteries. (2 of witch where bus size.)A total of over $460.00 on replacements. Keep up the good work!!!! Great product. I have spread the word and have possible 4 more customers that may be ordering.Thanks again.
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