I needed affordable electronic load with battery capacity test function. It works great and it is easy to use. It is small so it does not take up very much space. For low ampere (2A) tests it is very quite. At higher currents the fan starts to spin up and becomes audible. But it is not too loud.
My main use for this load is to discharge 18650 batteries. As I have another electronic load (Siglent SDL1020X-E) I noticed that while discharging with 1A or higher current Owon OEL1515 does count time slower than Siglent (the counted time is around 1% less than the time actually passed). I tested this multiple times and the result was always the same.
Little explanation: If I start both electronic loads and chronometer at the same time I can see that Siglent and chronometer counts time the same. For example after 2 hours they both will show 2 hours. But Owon will show around 1% less time on the display (1 hour and 59 minutes). That also impacts the counted capacity. However the difference is small. And also this is not a precision tool so it is not a problem.
Overall great product for a low price. From Eleshop you get T version, which is great for battery tests.
Only downside is that battery discharge test is only constant current.
Owon OEL1515T electronic load
Details
The OWON OEL1515T is part of the OEL15/30/60 series programmable electronic loads, which is a cost-efficient, but lower-end series of electronic loads. All loads we offer are the T version, which all come included with OCP, OPP, battery discharge and ripple tests. The compact OEL1515T is able to draw up to 150W, and it can pull up to 15A, and 150V.
This series of electronic loads offers basic functionality, such as an adjustable slew rate up to 2A/μs, a 5kHz dynamic mode, and remote compensation. A unique feature that is not common for electronic loads is the ability to directly plug banana cables into the load. Additionally, the load features several tests such as a battery discharge test, ripple test, OCP test and OPP test. Moreover, the electronic load has a bright 2.8-inch LCD screen with a resolution of 1mV/1mA and can be controlled via RS232 or USB. Finally, this compact and cost-efficient load is the perfect addition to your home lab for basic purposes.
Model overview
| Model | Power | Voltage range | Current range | Price |
|---|---|---|---|---|
| OEL1515T | 150 W | 0 - 150 V | 0 - 15 A | |
| OEL3015T | 150 W | 0 - 300 V | 0 - 15 A | |
| OEL6015T | 150 W | 0 - 600 V | 0 - 15 A | |
| OEL1520T | 300 W | 0 - 150 V | 0 - 20 A | |
| OEL1530T | 300 W | 0 - 150 V | 0 - 30 A | |
| OEL3020T | 300 W | 0 - 300 V | 0 - 20 A | |
| OEL3030T | 300 W | 0 - 300 V | 0 - 30 A | |
| OEL6020T | 300 W | 0 - 600 V | 0 - 20 A | |
| OEL6030T | 300 W | 0 - 600 V | 0 - 30 A |
Specifications
| Resolution | 1 mV / 1 mA |
| Resistance | 0.05 Ω - 7.5 Ω |
| Slew rate | 0.01 A/ms - 2000 A/ms |
| Static modes | CC, CR, CV, CP |
| Dynamic modes |
Yes, 5 kHz
|
| Protection | OPP, OCP, OVP, OTP |
| Interfaces | RS232, RS485, USB |
| Display | 2.8" TFT |
| Dimensions | 84 x 151 x 283 mm |
| Weight | 2.5 kg |
Accessories
The OEL1515T comes by default with:
- Power cord
- Spare fuse
Downloads
| Owon OEL15/30/60 series datasheet |  (4.64 MB) | Download |
| OEL user manual | (1.72 MB) | Download |
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