Measurement database: electronic loads

The author liked the load's improvements, but noted current overshoot and other software and design shortcomings.

The author's modified load reached 1,200 W and 50 A; current overshoot was reduced but not eliminated.

The author built two compact loads with charge control; they sustain 350 W continuously and have improved switching.

The author describes the load’s build and specifications but does not report a maximum-power test.

More convenient than the CL24, it is recommended for batteries up to 12–24 V, though power limits and the missing encoder remain.

The prototype worked excellently up to 1400 W and 109 A; the author plans to improve current stability.

The load measures accurately, but its transistors get very hot during testing at around 1300 W.

The modified load reaches 80 A and 1200 W, which is nearly what the author wanted.

Accuracy at low currents and functionality improved, but power is limited and the CV, CR, and CP modes have problems.

The second unit was tested as part of a pair; the author found graph-display errors when controlling two loads through one program.

The author considers the DL24MP the best balance of price, quality, and features and recommends buying it.

The DL24EW is similar to the DL24MP, but the author recommends it only if charging functionality is needed.

Rated for 500 W continuous and works normally at 30 A; in testing it dissipated about 670 W.

The old DIY load ran for about eight years without repairs; the author briefly pushed it to 600 W.

Used to test the charger’s operation in CV mode.

The load is functional and reasonably accurate, but battery testing is unfinished and current-balancing resistors overheat at 24 A.

An interesting, feature-rich load, but it handles 600 W only briefly and needs modifications.

The author liked the modular design and separate display enclosure and says the load can be recommended.

The load is accurate and easy to modify, but its CV mode barely works.

The tester pleased the author and is recommended for cycling tests, though its specialized design limits functionality and ease of use.

The load meets its stated specifications and supports calibration, though it has some design drawbacks.

Replacing the switching supply with a transformer eliminated interference, which pleased the author.

It works and meets its stated specifications, but accuracy is modest and the power stage is operating at its limit.

The author recommends it: it handles up to 150 W, but the charger is weak and the stock terminals and fan need attention.

The kit is inexpensive and easy to assemble, but the author recommends staying under 120 W for continuous use and providing good cooling.

After the cable was recrimped, the load worked reliably and its operating modes pleased the author.

The hardware works well, but CV mode is limited to about 155 W and the software is awkward and needs calibration.

The load works with software and RS485, but the software glitches and control is very slow; no numerical test results are given.

The author liked this versatile load: accuracy is good, but the charger controller overheats unless modified.

The board is interesting and functional, though it has flaws, Chinese-only software, and did not reach 15 A.

The homemade load maintains its set current as input voltage changes and reaches about 5 A.