Rigol DL3021
A well-supported programmable load for testing power supplies and batteries in an electronics lab.
Amazon $549$549
150 V / 40 A200 W1
3.4/5
A low-cost 300 W programmable load for battery capacity and power-supply testing on a hobby bench.
- 150 V / 30 AOutput
- 300 WPower
- Electronic loadType
- USB, RS232PC control
Check price at Amazon$215.99
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 300 W for about $216, far less per watt than the lab brands
- CC, CV, CR and CP modes
- USB and RS232 with SCPI commands
- Light at 5.5 lb
Cons
- Slower 5 kHz dynamic mode
- No published warranty
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | OEL1530 |
|---|---|
| Output | |
| Type | Electronic load |
| Channels | 1 |
| Channel ratings | 150 V/30 A, 300 W |
| Max voltage | 150 V |
| Max current | 30 A |
| Rated power | 300 W |
| Dynamic mode | 5 kHz |
| Load modes | CC, CV, CR, CP |
| Precision | |
| Setting resolution | 1 mV / 1 mA |
| Readback resolution | 1 mV / 0.1 mA |
| Remote sense | Yes |
| Control | |
| PC interfaces | USB, RS232 |
| SCPI | Yes |
| Over-voltage protection | Yes |
| Over-current protection | Yes |
| Build | |
| Weight | 5.5 lb |
Alternatives in this type
Korad KEL2010
A 300 W programmable load with fine low-range resolution, for battery and supply testing past 200 W.
Amazon $525$525
150 V / 40 A300 W1
OWON OEL8511
A programmable 200 W load for benches that may later gang several units on RS485.
Amazon $399$399
150 V / 20 A200 W1
Compare
Compare the OWON OEL1530 with any other bench power supply →
More from OWON: every OWON product ranked.