Bauer 20V HyperMax Battery Compatibility Guide
Updated: June 15, 2026 | Garage Almanac
The Short Answer
All Bauer 20V batteries fit all Bauer 20V tools.
| Platform | Bauer 20V HyperMax |
|---|---|
| Nominal voltage | 20V (18V-class) |
| Cell format | 5x 18650/21700 |
| Introduced | 2018 |
| Charges with | Bauer 20V chargers |
| Official info | Bauer batteries & chargers |
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The Bauer 20V HyperMax is a 18V-class platform introduced in 2018, built around a 5x 18650/21700 cell pack. All Bauer 20V batteries fit all Bauer 20V tools.
Legacy & cross-generation: Harbor Freight house brand; not cross-compatible with Hercules (HF’s pro line) out of the box.
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