We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Compact USB-C load tester with 4-digit LED display, cooling fan and adjustment knob

DROK USB Load Tester 25W LD25 USB Type-C 0.25A-4A Fan

SKU CH-KCQC-EQCJX

USB electronic load tester with adjustable constant current from 0.25 A to 4 A, 25 W capacity, four-digit LED display and intelligent fan cooling

  • Team affiliation1 Piece
  • Key featuresCorded Electric, false
  • Product weight0.01 oz
  • Product typeAmmeter
  • Tests chargers up to 25W with 0.25A-4A adjustable load
  • 4-digit LED shows voltage, current and power in real time
  • Intelligent fan cools the module when temperature exceeds 80°C
  • Triple protection stops operation on over-voltage, over-power or over-temperature
  • Precision potentiometer sets exact constant-current discharge for cable ageing tests

USB intelligent load tester

The DROK LD25 is a USB and Type-C electronic load module rated for 25W maximum power. It provides adjustable constant current from 0.25A to 4A for testing charger output capability and cable quality. A 4-bit LED display shows voltage, current and power values in real time. The unit is intended for engineers, hobbyists and factory ageing tests.

Replaces manual resistor loads

Unlike fixed resistors this module lets you dial the exact current needed and adds over-voltage, over-power and over-temperature protection. The jump is worth it when you need repeatable discharge profiles up to 25V and 4A without swapping hardware. It is not for buyers who require higher wattage or voltage ranges beyond the stated limits.

Sustained load with active cooling

An intelligent temperature-control fan spins up when internal temperature exceeds 80 °C, allowing continuous operation at the full 25W rating. Over-power protection trips if dissipation goes above 25W, and over-voltage protection activates between 25V and 30V. The potentiometer holds its setting during long test runs.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $26.99
Cheaper than about 58% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameDROK
Product typeAmmeter
Size & build
Product weight0.01 oz
More details
Team affiliation1 Piece

Questions about this item

What connectors does the LD25 load tester use for the device under test?

It provides both a USB Type-A and a USB Type-C input so you can plug in chargers or cables with either interface.

How do you set the constant-current value and what is the common mistake?

Turn the precision adjustable potentiometer while watching the 4-bit LED display; the step users miss is confirming the boot default state (on or off) before applying power.

Which parts wear out and need replacement over time?

The intelligent temperature-control cooling fan is the only moving component; if airflow drops and the unit hits the 80 °C over-temperature threshold it will shut down, signalling the fan should be swapped.

More in Multimeters & Electrical Testers

Similar items