pgr2002
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I have one "KRAFTtech" drill machine (model CDP02CN-1) wherein it has 5 ni-cd cells of 1.2v & 1200 mah each. Now I would like to replace these cells with Lithium type cells (18650) of 3.7 volts. Since originally it works with 6v, Lithium cells required will be 2. Now the question is - should I go with only 2 cells (in series) or 4 cells or more in parallel (2+2 in series, or more depending on the availability of space). Should I increase capacity from 1200 mah to higher ones or not?