How we test

Every number on AmpVerdict comes from a measurement we took, a bill we read, or data a reader shared with us. Here is exactly how.

The instruments

• Plug-in power meter (Kill A Watt) for device draw and energy delivered.
• Clamp meter and multimeter for current and startup surge on fridges and pumps.
• Whole-panel energy monitor (Emporia Vue) for real household consumption graphs.
• Temperature probe, because battery chemistry behaves differently in the cold.

What every review must include

• Real usable capacity (Wh delivered) versus the rated number on the box.
• Measured runtime on named loads, single device first, then a realistic backup mix.
• Startup surge behaviour with compressors and pumps.
• Charge efficiency, fan noise, idle drain and cold-weather results.
• Our own photos and video of each test.

How we make money

Some links are affiliate links and some pages send quote requests to installers. That revenue never changes a measured result. We say plainly what we tested and what we only cite.

Who runs this

Nacho Iniguez, Independent home-energy tester and analyst. Read the full bio and credentials on the about page.