Lithium Battery Performance for Power Tools: Platform
Why “performance” is a system property, not a cell spec
I have spent more than a decade in our Shenzhen pack line, and the most common misconce…
Lithium Battery Testing for Power Tools: Drop and Ingress
I have run a 21700 cordless-tool pack through the same gauntlet for seven years now, and every facility I visit still finds the same surprise: the cell che…
Lithium Battery Testing for Power Tools: Cell Binning and
I spent most of last year visiting three contract manufacturers that assemble 18 V and 36 V slide-pack lithium battery packs for cordless drills, impact dr…
Lithium Battery Performance for Power Tools: An Engineer’s
Two packs sit on my bench this morning with the same label: 18 V, 5.0 Ah, 90 Wh. One rips thirty cuts through 2x lumber on a 6-1/2″ circular saw before the…
Lithium Battery Maintenance for Power Tools
If you have ever pulled a dead 18 V pack off the shelf and blamed the cell when the real culprit was a dry contact or a five cent BMS FET, you already know…
Lithium Battery Cost Optimization for Power Tools
Every product manager who has ever priced a cordless power tool eventually asks the same question: how do we make the battery cheaper without making it dan…