Research is the current evidence basis
ToolShed Tested currently publishes research-backed recommendations. George Perkins buys and reviews tools for ToolShed Tested. That role does not establish hands-on evidence for each published guide. A future hands-on label is blocked unless the article supplies the exact tool, task, conditions, observations, limitations, and evidence artifacts.
Source-led research
18V vs 20V MAX, normalized
Separates nominal voltage from maximum initial voltage and states the limits of cell-count inferences.
Primary source: DeWalt 20V MAX disclosure
Cell reference: Molicel P42A specification
Seven tool-platform warranties compared
The conclusion is limited to the seven named brands and does not claim to cover every cordless platform.
Example primary source: Milwaukee warranty coverage
Scope check: EGO warranty policy
High-AI-traffic source audit
Direct-source counts below include external links in the article body. A zero is a published gap, not a passing grade.