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Hercules 20V Battery Compatibility Guide/

Hercules 20V Battery Compatibility Guide

Updated: June 15, 2026 | Garage Almanac

The Short Answer

All Hercules 20V batteries fit all Hercules 20V tools.

Platform	Hercules 20V
Nominal voltage	20V (18V-class)
Cell format	5x 18650/21700
Introduced	2017
Charges with	Hercules 20V chargers
Official info	Hercules batteries & chargers

The Hercules 20V is a 18V-class platform introduced in 2017, built around a 5x 18650/21700 cell pack. All Hercules 20V batteries fit all Hercules 20V tools.

Legacy & cross-generation: Harbor Freight pro brand; separate foot from Bauer 20V.

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