# M18™ batteries — Power tool battery platform and accessory interface compatibility

For M18™ batteries, brand is Milwaukee; system / platform is M18™; compatible with is M18™ tools; notes is There are three tiers of M18™ REDLITHIUM™ batteries. REDLITHIUM™ FORGE™, REDLITHIUM™ HIGH OUTPUT™, and standard REDLITHIUM™, recorded from its source on 2026-08-11.

- **Item:** M18™ batteries _(verified: appears in the quote below)_
- **Brand:** Milwaukee _(our reading, not quoted from the source)_
- **System / platform:** M18™ _(our reading, not quoted from the source)_
- **Compatible with:** M18™ tools _(verified: appears in the quote below)_
- **Notes:** There are three tiers of M18™ REDLITHIUM™ batteries. REDLITHIUM™ FORGE™, REDLITHIUM™ HIGH OUTPUT™, and standard REDLITHIUM™. _(verified: appears in the quote below)_

## What the source says

> There are three tiers of M18™ REDLITHIUM™ batteries. REDLITHIUM™ FORGE™, REDLITHIUM™ HIGH OUTPUT™, and standard REDLITHIUM™. REDLITHIUM™ FORGE™ batteries provide the MOST POWER, FASTEST CHARGING, and LONGEST LIFE. All M18™ batteries fit M18™ tools.

## Sources disagree

More than one authority states this, and they do not state the same
thing. Both are reproduced with the source each came from.

### Compatible with

milwaukeetool.com says compatible with is **M18™ tools**, as of 2026-08-11.

> There are three tiers of M18™ REDLITHIUM™ batteries. REDLITHIUM™ FORGE™, REDLITHIUM™ HIGH OUTPUT™, and standard REDLITHIUM™. REDLITHIUM™ FORGE™ batteries provide the MOST POWER, FASTEST CHARGING, and LONGEST LIFE. All M18™ batteries fit M18™ tools.

Source: https://www.milwaukeetool.com/products/batteries-and-chargers/m18-batteries-and-chargers

milwaukeetool.com says compatible with is **M18™ tools & chargers**, as of 2026-08-11.

> All M18™ Batteries are compatible with M18™ tools & chargers.

Source: https://www.milwaukeetool.com/products/batteries-and-chargers/m18-batteries-and-chargers


## Source

- https://www.milwaukeetool.com/products/batteries-and-chargers/m18-batteries-and-chargers

Last verified: 2026-08-11. Review by: 2027-08-11.
Part of [Power tool battery platform and accessory interface compatibility](https://referencesource.org/power-tool-battery-compatibility/).