charlie0129/batt

Health v2 · maintenance only

Adoption not part of the score

1666 stars · 73 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

batt is a Go-based tool that controls and limits battery charging on Apple Silicon MacBooks by setting maximum charge levels via SMC keys. It runs as a daemon to keep the battery at a configurable limit (e.g., 80%) to prolong battery lifespan, with advanced features like MagSafe LED control and power adapter cutoff.

Use cases

• limit macbook battery charging to 80 percent
• prevent battery swelling on apple silicon mac
• extend battery lifespan by keeping charge low
• control magsafe led charging indicator
• cut wall power and run macbook on battery while plugged in
• automatically calibrate macbook battery
• set custom charge limit below 80 percent on macos

When to choose

• you have an Apple Silicon MacBook and want to cap charging below the native macOS limit
• you need a charge limit under 80% or are on a macOS version without native charge limiting
• you want power-user features like MagSafe LED control or adapter power cutoff

When to avoid

• you are on macOS 26.4+ and the built-in 80-100% charge limit range meets your needs
• you have an Intel Mac, since it targets Apple Silicon firmware
• you need cross-platform battery management beyond macOS

Facets

cli-tool · maturity active

cli configuration-management developer-tools hardware apple-ecosystem developer-tools cli battery-health charge-limiting apple-silicon macbook smc daemon command-line macos

Member repositories

For agents

markdown · JSON · MCP: product_card(name="charlie0129/batt")