Cordless Drill

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Lithium ion + brushless motor are state of art - [1]

Batteries

NiCd batteries are less environmentally friendly chemistry
But Lithium is a scarce resource
Comparisons n of bats - [2]

Geared Motor, not BLDC

300 rpm - [3]

Brushless

12/24 - 3000 RPM - [4]

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