Garage Almanac

Garage Almanac is a cordless power-tool battery-compatibility reference that tells you, with cited sources, whether one brand’s battery fits another brand’s tool, and which cross-brand adapter bridges them when it does not. Start with the checker:

Every answer here comes from one original, hand-verified dataset: 26 battery platforms across the major brands, 21 cross-brand adapter records (19 with a live product listing), and 8 within-brand interchange questions. Each compatibility claim links to the manufacturer page or product listing it came from, and the dataset is re-checked quarterly. A wrong “yes” can damage a tool or a pack, so accuracy is treated as the whole point of the site. See the full compatibility data and methodology.

Three places to start:

• Battery compatibility by platform: pick a battery brand and see which tools and chargers it works with.
• Cross-brand battery adapters: which adapters between brands actually exist, what they cost, and where they fall short.
• Compatibility guides: plain answers to the common “are these interchangeable” and “can I charge through an adapter” questions.