Hart 20V Battery Compatibility Guide
Updated: June 15, 2026 | Garage Almanac
The Short Answer
All Hart 20V batteries fit all Hart 20V tools.
| Platform | Hart 20V |
|---|---|
| Nominal voltage | 20V (18V-class) |
| Cell format | 5x 18650/21700 |
| Introduced | 2018 |
| Charges with | Hart 20V chargers |
| Official info | Hart batteries & chargers |
Advertisement
The Hart 20V is a 18V-class platform introduced in 2018, built around a 5x 18650/21700 cell pack. All Hart 20V batteries fit all Hart 20V tools.
Legacy & cross-generation: Walmart house brand, made by TTI (Ryobi/Ridgid/Milwaukee parent). Hart 20V is its own foot, not cross-compatible out of the box.
Advertisement