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I think I have a battery going bad. Charged over nite and light read charged. but in the first 15 mins it died on me

how long does it take to charge a hitachi battery 18v

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    How old is it? It’s probably time..... – Tyson Apr 7 '18 at 21:42
  • Lithium Ion battery's are best to run all the way down before charging up again. If I can recall they typically last longer by charging to 80% and not 100%. You will see that 80% number with Electric Vehicles quite a bit and I think it is for that reason . – Ken Apr 7 '18 at 22:35

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