An electronic load sinks a set current, voltage, resistance or power, so you can measure a battery’s capacity, check a charger’s output or watch how a power supply responds to a sudden load step. The rated power limits how hard you can push it: 200 W covers most bench supplies and small battery packs, while larger packs need 300 W or more. A faster dynamic mode reproduces quicker load steps when you test a supply’s transient response.
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Full ranking 5
- Siglent SDL1020X-E#1 of 5Full review
A programmable load with every interface built in, for labs that automate power-supply and battery tests.
Amazon $574$574150 V / 30 A200 W1 - Rigol DL3021#2 of 5Full review
A well-supported programmable load for testing power supplies and batteries in an electronics lab.
Amazon $549$549150 V / 40 A200 W1 - Korad KEL2010#3 of 5Full review
A 300 W programmable load with fine low-range resolution, for battery and supply testing past 200 W.
Amazon $525$525150 V / 40 A300 W1 - OWON OEL1530#4 of 5Full review
A low-cost 300 W programmable load for battery capacity and power-supply testing on a hobby bench.
Amazon $215.99$215.99150 V / 30 A300 W1 - OWON OEL8511#5 of 5Full review
A programmable 200 W load for benches that may later gang several units on RS485.
Amazon $399$399150 V / 20 A200 W1
