







High-precision programmable DC electronic load for power supply, charger and battery testing in production lines and R&D laboratories.
The Cell Lab 400W Programmable DC Electronic Load Tester is a high-performance electronic load designed for accurate testing of power supplies, chargers, batteries, LED drivers and electronic components. Featuring 1 mV / 1 mA resolution, multiple operating modes and comprehensive protection mechanisms, it is suitable for both production line testing and research and development applications.
With support for CC, CV, CR, CP and combined modes, as well as dedicated battery discharge and LED testing, this electronic load enables precise evaluation of voltage stability, current capability, dynamic response and power performance. A clear 2.8-inch TFT LCD display, intuitive interface and optional remote communication interfaces make it easy to integrate into automated test systems and laboratory environments.
• Multiple programmable load modes – CC, CV, CR, CP, CC+CV and CR+CV for flexible testing of power devices.
• High resolution and accuracy – 1 mV / 1 mA resolution with stable and repeatable measurement performance.
• Advanced test functions – Transient test, scan test, list test, short-circuit simulation, battery and LED testing.
• Remote control and data retention – USB standard interface with optional RS-232 or RS-485, data retained after power loss.
• Comprehensive safety protection – Over-voltage, over-current, over-power and over-temperature protection with intelligent fan control.
| Model | Channels | Rated Power | Input Voltage | Input Current |
|---|---|---|---|---|
| CL0878 | Single channel | 400 W | 0–150 V | 0–40 A |
| Item | Specification |
|---|---|
| Voltage range | 0.1–19.999 V / 0.1–150.00 V (up to 500 V for ET5411 A+) |
| Resolution | 1 mV / 10 mV |
| Accuracy | ±(0.05% + 0.02% FS) |
| Item | Specification |
|---|---|
| Current range | 0–3.000 A / up to 40.00 A (model dependent) |
| Resolution | 1 mA / 10 mA |
| Accuracy | ±(0.05% + 0.05% FS) |
| Item | Specification |
|---|---|
| Resistance range | 0.05 Ω–1 kΩ / 1 kΩ–4.5 kΩ |
| Resolution | 10 mΩ / 100 mΩ |
| Accuracy | ±(0.1% + 0.5% FS) |
| Item | Specification |
|---|---|
| Power range | Up to 400 W (model dependent) |
| Resolution | 10 mW |
| Accuracy | ±(0.1% + 0.5% FS) |
| Function | Specification |
|---|---|
| Transient test modes | CC, CV |
| Time range (T1 & T2) | 1 ms–60 s |
| Time resolution | 1 ms |
| Battery discharge modes | CC, CR |
| Maximum discharge capacity | 9999 Ah |
| Measurement resolution | 1 mA / 10 mA / 10 mΩ / 100 mΩ |
| Range | Resolution | Accuracy |
|---|---|---|
| 0–19.999 V / 0–150.00 V (up to 500 V) | 1 mV / 10 mV | ±(0.05% + 0.1% FS) |
| Range | Resolution | Accuracy |
|---|---|---|
| 0–3.000 A / up to 40.00 A | 1 mA / 10 mA | ±(0.05% + 0.1% FS) |
| Range | Resolution | Accuracy |
|---|---|---|
| Up to 400 W | 10 mW | ±(0.1% + 0.5% FS) |
| Protection Type | Specification |
|---|---|
| Over-voltage protection | Cut-off at >155 V or >510 V (model dependent) |
| Over-current protection | >42 A / >22 A / >16 A |
| Over-power protection | 420 W / 220 W |
| Over-temperature protection | 85 °C |
| Short-circuit simulation | CC / CV / CR supported |
| Input polarity protection | Reverse polarity prompt |
| Cooling | Intelligent variable-speed fan |
| Item | Specification |
|---|---|
| Display | 2.8-inch TFT LCD |
| Language | English / Chinese |
| Key lock | Supported |
| Alarm | Built-in buzzer |
| Interfaces | USB (standard), RS-232 / RS-485 (optional) |
| External trigger | Supported (DB9 required) |
| Data retention | Yes (power-off memory) |
Charger and power adapter testing
Switching and linear power supply evaluation
Battery discharge and capacity testing
LED driver and lighting power testing
Production line quality control
Electronics R&D laboratories
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Q1: Can this electronic load be used for battery discharge testing?
Yes. It supports dedicated battery test modes with CC and CR discharge and capacity measurement up to 9999 Ah.
Q2: Does it support dynamic load testing?
Yes. Transient and scan test modes are available to evaluate dynamic response of power supplies.
Q3: Can it be remotely controlled?
Yes. USB is standard, with optional RS-232 or RS-485 for automated test systems.
Q4: Is data retained after power loss?
Yes. The system maintains stored data even after unexpected power failure.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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