Why this exists
Battery listings and datasheets do not always tell the whole story. Real testing shows voltage sag, heat, usable capacity, Wh, recovery behavior, and how a cell reacts at different current levels.
About BatteryRealData.com
Real battery test data, built for people who actually compare cells.
BatteryRealData.com is a public battery testing and comparison project by DIY500AMP.com, created by Nelvick Berrios. The goal is simple: turn real test logs into clear charts, summaries, and warnings that help viewers understand how cells behave under load.
What gets published
Public visitors can see processed charts, comparison rankings, test dates, datasheet specs, cell photos, live testing status, and report summaries.
What this is not
BatteryRealData is not a cell manufacturer, safety certification lab, pack design approval, or instruction manual for extreme current use. High-current results are observations, not recommendations.
The philosophy
More context, less guessing.
A single number can hide a lot. A cell may look strong by capacity, weak by voltage sag, impressive by Wh, or concerning by temperature rise. BatteryRealData puts those details beside each other so the viewer can see the tradeoffs.
The project keeps growing toward a complete battery knowledge base: datasheets, public tests, live telemetry, current-level comparisons, heat-soak temperature data, and practical notes that make the results easier to understand.
18650 and 21700 cell organization
Public compare charts
Live command center data
Datasheet-vs-tested summaries
Safety-first public warnings