Cordless Drills

Weight - the lighter the drill, the easier it is to operate

Number of speeds

• One speed - suitable for less demanding work
• Two speed - suitable for demanding work

Hammer - a drill function that facilitates drilling in materials such as concrete or stone.

• without hammer - for lighter work; suitable for drilling in wood and metal
• with hammer - universal (hammer function can be turned off); suitable for drilling in wood, metal, concrete, stone.

Battery

• Capacity - the higher the value in mAh / Ah, the longer the battery will last
• Voltage (V) - higher voltage means more battery power
• Battery type:

1. Li-Ion - the most widely used type; Li-Ion batteries are lightweight, high-capacity, and don't suffer from memory effect. They are found in more expensive models.
2. NiCd - excellent current-carrying capacity; mainly used in powerful cordless screwdrivers; suffers from memory effect.
3. NiMH - a compromise between Li-Ion and NiCd. They suffer less from memory effect than NiCd but have a lower capacity, whereas they are cheaper than Li-Ion batteries.