DC Load Banks
An accurate load for battery discharge and testing
We provide reliable DC load banks to simulate loads and discharge batteries as part of your testing.
Batteries are an increasingly important part of your energy ecosystem, particularly in systems including uninterruptible power supplies (UPS) and for energy storage from renewable sources. In turn, testing the performance and reliability of your batteries is increasingly mission critical.
We provide a flexible range of compact DC load banks and electronic loads, so you can simulate loads for your batteries and:
- Validate the overall health of your batteries
- Closely assess battery performance as part of solutions like a UPS
- Safely discharge batteries at your desired voltage and current
- Identify potential issues with your batteries sooner rather than later
Contact Our DC Load Bank Specialists
A complete range of load testing solutions
Our comprehensive fleet of load banks is carefully balanced to cover the widest possible range of applications, load types, and voltages.
DC load bank rental applications
- Test your backup energy storage and battery equipment by simulating loads to measure performance, efficiency, and battery health. DC load banks – including DC electronic loads – enable you to test your batteries through a full discharge cycle, so you can identify issues with performance and anticipate the end of lifespan.
- Resolve maintenance issues including degrading insulation before they escalate into disasters. With regular load testing, you can spot problems sooner – and fix them faster.
- Simulate performance at peak demand safely and accurately with a DC load bank. A DC constant-current load bank allows you to simulate high demand from a single compact unit.
- Meet schedules and performance expectations by thoroughly testing your equipment earlier in the process.
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Why choose Aggreko for DC load banks?
When organizations need DC load banks with sophisticated levels of control and access to accurate data, they turn to us.
A Wider Choice
We provide DC load banks from 28 V to 700 V, as well as a choice of data capture and control platforms.

Innovative Equipment
Including advanced control systems, integrated data capture/reporting, and low-noise versions.

Extended Expertise
We understand your wider energy solution, so we can provide more holistic guidance.

In-house Engineers
Our in-house engineers can design a solution to suit your testing goals, using DC load banks alongside other equipment.
Scalable Load Testing
We can provide small DC load banks for targeted testing, or more comprehensive solutions for scalable load testing.

Outdoor-Rated Load Banks
Our load bank fleet includes outdoor-rated load banks for safe external testing, even in harsh environments.

Fast deployment
All our equipment is available at short notice and can be delivered and installed in the shortest possible time frame.

Unbeatable reliability
When you choose us, you get equipment that’s constantly tested and ready to deliver from day one.
The trusted partner
Working with Aggreko is working with an industry leader with over 50 years’ experience in 80+ countries.
Contact Our DC Load Bank Specialists
DC load testing across major sectors
We provide dependable, custom-engineered solutions to test DC energy sources across numerous industries.
FAQs about Aggreko’s DC load banks
A DC load bank is a device used to simulate the electrical load on direct current (DC) power systems like batteries, power supplies, and DC generators. It allows you to test and verify the performance, capacity, and reliability of these systems by safely dissipating the energy produced during the test. DC load banks help ensure that your system can operate efficiently under real-world load conditions, providing peace of mind that it will function properly when needed.
DC load banks are used in a variety of applications where direct current power sources are critical, including:
- Battery testing: To assess the capacity and discharge performance of DC battery systems, such as those in UPS systems, telecommunications, and data centers.
- Renewable energy systems: To test the output of solar or wind energy systems that generate DC power.
- Electric vehicles: To evaluate the performance of battery systems and electric propulsion systems in EVs.
- DC power supplies: To ensure that power supplies or converters are delivering the appropriate voltage and current.
DC load banks are essential for preventative maintenance and performance verification across a range of industries that rely on DC power systems.
A DC load bank works by applying a controlled electrical load to a DC power source, such as a battery, power supply, or DC generator. The load bank converts the electrical energy into heat, which is safely dissipated through resistors and cooling systems.
During this process, the load bank measures the output voltage, current, and overall performance of the power source under simulated real-world conditions. This helps identify any potential issues like capacity degradation, inadequate voltage regulation, or system inefficiencies before they affect the operation of your DC power system.
Testing with a DC load bank is crucial for several reasons:
- Preventative maintenance: Load bank testing helps identify issues like battery capacity loss, poor voltage regulation, or underperformance, allowing you to address these problems before they lead to failure.
- System reliability: By simulating real-world conditions, load banks ensure that your DC power system can handle its intended load, providing confidence in its ability to perform during critical operations.
- Safety: Regular testing ensures that your batteries, power supplies, or generators are operating safely within their design specifications, reducing the risk of catastrophic failures or accidents.
In short, DC load bank testing helps extend the life of your equipment, ensures reliability, and improves safety.
Aggreko offers a range of DC load banks designed to meet various load testing needs, including:
- Battery testing load banks: Specifically designed to evaluate the capacity, discharge performance, and voltage stability of DC battery systems.
- DC power supply load banks: Used to test and verify the performance of DC power supplies and converters, ensuring they deliver the correct output voltage and current.
- High-capacity DC load banks: Suitable for larger systems, such as those used in renewable energy installations or industrial applications.
Aggreko’s DC load banks are available in various sizes and configurations to suit different testing needs, from small-scale solutions to large industrial setups.
Yes, Aggreko provides flexible rental options for DC load banks. Whether you need to perform a one-time test or require long-term equipment for ongoing maintenance, we offer short-term and long-term rental solutions to meet your needs.
Renting from Aggreko allows you to access state-of-the-art DC load banks without the capital investment, and our experts will assist with delivery, setup, and support throughout the rental period. This ensures that your load testing is efficient, accurate, and cost-effective.
Aggreko’s DC load banks provide several advantages, including:
- Precise load simulation: Our load banks simulate accurate DC loads, allowing you to test the performance of your system under real-world conditions.
- Scalability: Aggreko’s load banks come in various capacities, making them suitable for small-scale battery testing or large industrial DC systems.
- Expert support: Aggreko offers full technical support, from setup to operation, ensuring that your load testing runs smoothly.
- Flexible rental options: Renting a load bank from Aggreko allows you to use top-quality equipment without the upfront costs of purchasing.
By using Aggreko’s DC load banks, you can confidently test and maintain your DC power systems, ensuring their reliability and performance.
Setting up a DC load bank with Aggreko is straightforward:
- Step 1: Contact Aggreko – Discuss your testing requirements with our team to determine the best load bank for your needs.
- Step 2: Delivery and setup – Aggreko will deliver the load bank to your site and assist with the setup, ensuring the equipment is connected properly to your DC power source.
- Step 3: Run the test – With Aggreko’s support, you can simulate the necessary loads and monitor key performance metrics like voltage, current, and capacity.
- Step 4: Analyze the results – Our team will help you interpret the test results to ensure your system is performing as expected.
Aggreko’s full-service support makes it easy to conduct accurate and reliable load testing, ensuring your DC power systems are ready for operation.
The frequency of DC load testing depends on the specific power system and its operational environment. However, it is generally recommended to perform load testing:
- Annually for routine maintenance of critical systems such as backup batteries or emergency power supplies.
- After installation to verify that a new system is operating correctly before going live.
- After major repairs or upgrades to ensure that any changes to the system have not affected its performance.
Regular load testing helps catch potential issues early, ensuring your DC power systems remain reliable and safe over time.
An electronic load tests how well power sources provide electricity by imitating a device under test. With it, you can test for average and peak load capacities. Electronic loads often provide more precise data than other load bank types and are fully programmable, allowing for more granular testing and efficient automation.