Bench & Gauge

400W Electronic Load Tester vs 100MHz Oscilloscope Probes: Which Test Tool Should You Choose?

Choosing between an electronic load tester and oscilloscope probes comes down to whether you need to simulate power draw or inspect signals. Compare price, capabilities, and use cases.

Last updated Aug 15, 2026

Quick verdict

When you are shopping for test leads, probes, and fixtures, the first decision isn't which brand to pick; it's which job needs doing. The 400W Electronic Load Tester and the 2x 100MHz Oscilloscope Scope analyzer Clip Probe test leads kit solve opposite sides of the same bench problem. Do you need to stress a power source with a controlled load, or do you need to inspect a signal on an oscilloscope? If your work focuses on power supplies, batteries, chargers, or LED drivers, the load tester is the tool that will tell you how a source behaves under real demand. If you already have an oscilloscope and need clip probes for general signal tracing, the two-probe kit is the simpler way to get connected.

Price and capabilities compared

The price gap between the two is substantial. At $177.47, the 400W Electronic Load Tester is the higher-priced, standalone instrument. The 2x 100MHz Oscilloscope Scope analyzer Clip Probe test leads kit is priced at $17.99 and works as an accessory for gear you already own.

ProductPriceBest for
400W Electronic Load Tester$177.47Simulating loads and running dynamic/battery tests on power sources
2x 100MHz Oscilloscope Scope analyzer Clip Probe test leads kit$17.99Connecting an oscilloscope to circuits with clip leads and ground

Where each product wins

  • The 400W Electronic Load Tester wins when you need to verify capacity and stability. It supports constant voltage, constant current, constant resistance, and constant power modes, and it includes a dynamic test function for CC and CV with T1/T2 timing from 50ms to 60s. The battery test function handles CC and CR discharge modes.
  • The 2x 100MHz Oscilloscope Scope analyzer Clip Probe test leads kit wins when you need to observe signals. It offers 10X attenuation at 100MHz bandwidth and 10MΩ input resistance, with a 1X path for DC to 6MHz and 1MΩ input resistance. Two probes and a ground lead come in the retail pack.

Product notes

400W Electronic Load Tester 0-150V 0-40A Single Channel Programmable

This programmable load tester is built for applying a controlled electrical load to whatever you're testing, from switching power supplies and chargers to lithium batteries and LED drivers. It supports constant voltage, constant current, constant resistance, and constant power modes, and its dynamic test function works in CC and CV modes with T1/T2 timing from 50ms to 60s. The battery test function supports CC and CR discharge modes. Choose it when your goal is to verify how a power source behaves under load, especially in production line or aging test setups. The trade-off is that it doesn't capture waveforms or show you a signal; it's a load, not a probe. It also takes up a dedicated bench slot and requires setting up a test circuit around it.

2x 100MHz Oscilloscope Scope analyzer Clip Probe test leads kit for HP Tektronix

This two-probe kit is an oscilloscope accessory rather than a standalone tester. Each probe offers 10X attenuation with 100MHz bandwidth and 10MΩ input resistance, and a 1X path with 1MΩ input resistance and DC to 6MHz bandwidth. The included mini alligator clip and ground lead make it easy to attach to test points, and the 120cm cable gives decent reach across a bench. Choose it when you need a spare or replacement probe set for an oscilloscope and want two channels ready at once. The limitation is that it cannot simulate loads or test power delivery; it only carries signals into the scope. Also, the 1X path is limited to lower frequencies, so high-speed work should use the 10X setting.

Final choice by use case

Pick the 400W Electronic Load Tester if you need to evaluate power supplies, batteries, chargers, or LED drivers under controlled load conditions. Pick the 2x 100MHz Oscilloscope Scope analyzer Clip Probe test leads kit if your next project is about observing signals on an oscilloscope and you need a two-channel clip probe set at a lower price point. For a fully equipped bench, both earn a place, but if your budget allows one tool today, match the tool to the test you actually need to run.

Products in this article
400W Electronic Load Tester 0-150V 0-40A Single Channel ProgrammableUSD 177.47View on eBay2x 100MHz Oscilloscope Scope analyzer Clip Probe test leads kitUSD 17.99View on eBay
400W Electronic Load Tester 0-150V 0-40A Single Channel ProgrammableUSD 177.47View on eBay2x 100MHz Oscilloscope Scope analyzer Clip Probe test leads kitUSD 17.99View on eBay

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