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DL24/P Color 2.4-inch DC USB Tester Electronic Load — Lithium Battery Capacity Monitor & Power Meter
DL24/P Color 2.4-inch DC USB Tester Electronic Load — Lithium Battery Capacity Monitor & Power Meter view 1DL24/P Color 2.4-inch DC USB Tester Electronic Load — Lithium Battery Capacity Monitor & Power Meter view 2DL24/P Color 2.4-inch DC USB Tester Electronic Load — Lithium Battery Capacity Monitor & Power Meter view 3DL24/P Color 2.4-inch DC USB Tester Electronic Load — Lithium Battery Capacity Monitor & Power Meter view 4DL24/P Color 2.4-inch DC USB Tester Electronic Load — Lithium Battery Capacity Monitor & Power Meter view 5DL24/P Color 2.4-inch DC USB Tester Electronic Load — Lithium Battery Capacity Monitor & Power Meter view 6

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Overview

The DL24/P is the tool you didn't know you needed until a '10,000 mAh' power bank died at 6,000. It works as both a USB tester and a programmable electronic load: clamp it across a battery or feed it from a charger and it logs voltage, current, capacity (mAh/Wh) and discharge curves on its 2.4-inch color screen, then syncs the data to a phone app over Bluetooth. Use it to grade old 18650 cells, verify a solar panel's output, or stress-test a USB-C cable's real wattage. The color display reads clearly in sunlight, the thresholds are settable so it auto-cuts at your low-voltage limit, and the whole thing fits in a shirt pocket. For makers, repair techs and anyone who'd rather measure than guess, it pays for itself the first time it exposes a fake battery.

At a glance

✓2.4-inch color display
✓USB tester + electronic load
✓Bluetooth app logging
✓Settable cut-off voltage

Pros & cons

Why we like it

  • Works as USB tester AND programmable electronic load
  • Logs capacity, current, voltage and Wh to a phone app
  • Settable cutoff so it won't over-discharge your cells
  • Bright 2.4-inch color screen, readable outdoors
  • Pocket-sized — weighs almost nothing

Things to know

  • App is bare-bones and Chinese-first
  • Leads and sockets are fiddly for tiny cells
  • No onboard logging storage without the app

FAQ

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How long does shipping take?

Most items arrive in 7–20 days, but it varies by seller and destination. Always check the listing before ordering.

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