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When to charge affects life of DC 9099 batteries?


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Hi Folks,

Manual that came with 18V Drill/Sawsall kit recommended charging the DC 9098 batteries as soon as power starts to drop off, and, if not used for a while, charging once a week. 

Bought Dc 9099 replacement batteries today at Lowe's since original ones died, and the salesman said that is wrong, that NiCad batteries only have so many charges in them, to run them all the way down before charging and not to charge every week if not using them. 

So I wonder if you folks can straighten me out.  I'd like them to last as long as possible.  Tanks, eh?  :)


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