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Unread 13-12-2014, 16:19
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electroken electroken is offline
Electron Tamer
AKA: Ken Pontbriant
FRC #0230 (Gaelhawks)
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Join Date: Jan 2012
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electroken is a jewel in the roughelectroken is a jewel in the roughelectroken is a jewel in the rough
Re: Drills for ~$100

The Li-ion drills marked "20V MAX" are a bit of a scam. Li-ion cells of the type used in drills have a nominal voltage of 3.6V. 5 cells in series gives 18V. So 20V isn't really possible. More investigation was needed.

I took a long hard look at one of the DeWalt 20V Max drills at Home Depot. In tiny letters on one face of the box read something like:

BATTERIES ARE 20V MAX WITH NO LOAD AND WHEN FIRST REMOVED FROM CHARGER. NOMINAL IS 18V

So Engineering says it's an 18V drill. Marketing says it's 20V MAX.