Cordless screwdrivers

Battery

— battery powered — most often removable, less often built-in (see "Complete battery").

The main advantages of such a tool are freedom of movement, independence from outlets and the absence of a power cord. On the other hand, such power supplies are suitable only for motors of relatively low power (up to 500 W); however, the tool is more expensive and heavier than similar models with mains power, and its operation time is limited by battery charge. However, high power is not required so often, and the limited operating time is often compensated by the presence of two batteries in the kit at once and/or the ability to purchase the required number of spare batteries (the exception is models with non-removable batteries, but for them this moment is not critical for a number of reasons) .