-
Voltages
-
Max current
-
Power
-
Efficiency
-
Boost/Buck converters
-
Charging
-
-
Size
-
Electrical interface
-
Digital circuitry
-
Connection robustness
-
Black & Decker - Lithium - "12v"
-
Craftsman - Lithium - "20v"
-
Dremel - Lithium - 10.8v
-
DeWalt - NiMH - 18v
-
Warrier - Lithium - 18v
-
DeWalt - 4x Alkaline AA