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Measurement database

All the figures from the blog's reviews in one place: ripple, efficiency, actual power, battery capacity, temperature rise and price. Every figure has a quote from the review, and every row links to the review itself.

1175devices
760reviews
3198figures from reviews

Find a device

276Power suppliesAC power supplies and adapters: ripple, efficiency, actual power and temperature rise.108ConvertersDC-DC modules and bench power supplies: current, ripple and efficiency under test.44ChargersBattery and USB chargers: current, efficiency, temperature rise and price.293BatteriesLi-ion, LiFePO4 and LTO: measured capacity, internal resistance and temperature rise under load.20Battery packs and power banksReady-made battery packs and power banks: how much of the claimed capacity is left.31Electronic loadsRated and actual power, temperature rise at the limit.69Measuring instrumentsMultimeters, oscilloscopes, LCR meters and USB testers: review conclusions and prices.54ToolsSoldering irons, hot air tools and other equipment: power, temperature and price.280Other devicesEverything else measured on the blog.

Frequently asked questions

Where do the figures in the measurement database come from?

From the reviews on this blog. The program reads each review and extracts values along with a quote; verification keeps only values that appear verbatim in the review text. Each row links to the review itself.

Can figures from different reviews be compared?

They can be used as a rough guide, but test conditions vary: the load, input voltage, temperature and instruments were different. Check the measurement conditions in the review before buying.

Why is a dash shown for some devices?

It means that value isn’t in the review text. It’s often shown in a photo of the display or in a graph, but the database doesn’t include those figures because they can’t be verified against a quote.

What do current, voltage and power mean in the table?

These are the device’s rated specifications. The “In test” column shows the highest power the author achieved on the test bench, while ripple, efficiency, temperature rise and capacity are always measured by the author.