The voltage of a fully charged power tool varies depending on the tool type and battery specifications; there is no single, universal standard value.
Typical Full-Charge Voltages for Power Tools
Cordless drills typically operate within the 12V to 24V range; for instance, a 21V cordless drill is ready for operation once it reaches a full charge of 21V.
Brand-Specific Power Tool Voltages
Makita's mainstream high-capacity lithium-ion battery models (such as the BL1850B and BL1860B) feature a standard 18V rating-with a full-charge voltage of 18V-and are compatible with the brand's entire lineup of tools, including angle grinders and rotary hammers.
HiKOKI power tool battery packs support an 18V operating voltage, reach a full charge at 18V, and have a rated capacity of 2000mAh.
Voltages for Chainsaws
Voltage ranges for battery-powered chainsaws vary significantly based on power output: 18V to 20V models are suitable for light pruning and cutting small branches; 40V to 56V models are designed for medium-duty cutting, offering a balance between power and battery life; and models rated at 60V or higher are professional-grade tools capable of delivering maximum power for cutting thick timber while providing extended runtime.
