Masterforce Boost is a combination of an advanced battery and electronics within MasterForce cordless brushless tools that detect when you have a Boost pack installed. It works on both ends independently, but to an even greater degree together.

For example, the advanced design of a Boost battery natively has better power delivery than a standard pack, so your MasterForce 20V max tools will see a bump in performance.
…
Continue here:
https://www.protoolreviews.com/best-masterforce-cordless-tool-reviews-now-with-boost-technology/