Sources

Sources

Tool Output Specifications:

https://www.doitbest.com/shop/power-tools-and-accessories/cordless-power-tools/cordless-drills-and-drivers/cordless-screwdriver/black-and-decker-24-volt-alkaline-direct-plug-14-in-cordless-screwdriver?SKU=300126

Efficiency Estimate:

https://people.eecs.berkeley.edu/~sequin/CS285/2011_REPORTS/CS285%20final%20paper_Eric&Jessie.pdf

Efficiency Estimate:

https://www.machinedesign.com/archive/article/21834659/a-second-look-at-gearbox-efficiencies