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Kombucha for Mac

Menu bar app that limits MacBook charging to a chosen battery range to extend battery lifespan.

By askuksov. Free and open source, MIT licence.

Get it with OpenDMG View source on GitHub

Kombucha at a glance

Version
0.3.0
Released
13 November 2026
Download size
1.3 MB
Works on
Apple silicon and Intel
Licence
MIT
Category
System Tools
Developer
askuksov
GitHub stars
9

About Kombucha

Limit MacBook charging from the menu bar to extend battery lifespan

Screenshots

Kombucha screenshot 1Kombucha screenshot 2Kombucha screenshot 3

How to install Kombucha on a Mac

  1. Get OpenDMG. It is a free app store for open source Mac apps. Download OpenDMG.
  2. Search for Kombucha and press Get. OpenDMG downloads version 0.3.0 from askuksov's own GitHub release.
  3. Open it. The download is checked against its SHA-256 fingerprint and its signature is checked on your Mac before it lands in Applications.

Updates to Kombucha show up in OpenDMG and install with one button. No account is needed.

Prefer to do it by hand? The developer's file is on GitHub: Kombucha-0.3.0.zip (1.3 MB).

What is new in Kombucha 0.3.0

Kombucha holds the MacBook battery inside a charge range you choose: it stops charging at the upper threshold and resumes at the lower one, so the Mac runs from the adapter while the battery rests.

## What's new

- **Capacity in mAh and Wh.** Settings → Battery now shows the full charge capacity and the design capacity next to Maximum Capacity, in mAh and Wh. The Wh value is an estimate: macOS publishes no nominal pack voltage, so Kombucha uses 3.85 V per cell.
- **Languages.** Simplified Chinese, Japanese and Korean join German, Ukrainian, French and Spanish. Pick one in Settings → General → Language, or let macOS choose from System Settings.

## Updating from 0.2.x

1. Quit Kombucha: menu bar panel → Quit Kombucha.
2. Replace `Kombucha.app` in `/Applications` with the new one, or run `brew upgrade --cask kombucha`.
3. Open Kombucha. If Settings → Helper says the helper stopped answering, press Reinstall helper and approve it in System Settings → General → Login Items & Extensions.

## Install

1. Download `Kombucha-0.3.0.zip` below and unzip it.
2. Move `Kombucha.app` to `/Applications` and open it.
3. Approve the helper once in System Settings → General → Login Items & Extensions.

Or with Homebrew: `brew install --cask askuksov/tap/kombucha`.

The app is signed with a Developer ID and notarized by Apple.

## Requirements
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