Are you tired of unreliable battery discharge tests, inaccurate capacity readings and costly battery over-discharge damage?
Our 300A, 400A & 500A DC resistive load bank is purpose-built for controlled battery discharge, capacity verification and on-site acceptance testing for DC battery packs.
Designed for field engineers and battery manufacturers, this resistive DC load delivers steady discharge current, built-in multi-layer safety protection and simple operation to help you get repeatable, trustworthy test data every time.
Core Pain Points We Solve
What Problems Does Our DC Load Bank Solve?
❌ Unstable discharge current with cheap makeshift loads → inconsistent test data, unaccepted inspection reports
✅ Solution：Stepwise resistive load switching delivers steady, repeatable constant discharge current.
Test results stay consistent to help your inspection reports pass customer and third-party acceptance.
❌ Unattended discharge testing → battery over-discharge, permanent cell damage and safety hazards
✅ Solution：Pre-set cut-off voltage. The load bank automatically stops discharging once the threshold is reached.
Safe for overnight unattended testing and eliminates over-discharge risks.
❌ Delicate electronic loads easily broken in dusty, rough field sites (telecom towers, substation sites) with high repair cost & long downtime
✅ Solution：Pure resistive design without fragile high-frequency electronic modules. Dust-proof cabinet + forced air cooling.
It tolerates harsh on-site environments, features low failure rate and low-cost spare parts.
❌ Multiple battery current specs, forced to purchase several test units to cover different test jobs.
✅ Solution：300A / 400A / 500A current grades optional, plus customizable DC voltage range.
One platform can cover most of your battery discharge test requirements.
❌ No built-in data recording → cannot provide discharge curve and test records for client acceptance & audit.
✅ Solution：Optional upgrade of data logger, USB export and PC monitoring software.
It records real-time voltage, current and time, and exports complete discharge curve and test reports for audit.
❌ Heavy, fixed test equipment hard to move between data rooms, base stations and production lines.
✅ Solution：Integrated mobile cabinet with heavy-duty casters and quick high-current terminals.
Easy to transport and fast wiring for on-site tests across different locations.
Typical Application Scenarios
Where Is This DC Battery Discharge Load Bank Used?
Our resistive DC load bank is widely adopted by battery factories, power maintenance contractors and system integrators:
Battery Manufacturers: Lithium / lead-acid battery pack aging test & factory capacity inspection
Telecom Industry: Remote base station backup battery annual capacity maintenance
Data Center & UPS Room: UPS DC battery bank acceptance and periodic discharge inspection
Power & Substation: DC operation power storage battery verification
Energy Storage Projects: Off-grid solar energy storage battery on-site acceptance
Railway & Transit: Rail auxiliary DC battery group testing
Click Here to Start Contacting Us
RFQ
Q1: Can this DC load bank run unattended discharge tests overnight?
A1: Yes. You can preset the cut-off voltage. It will automatically stop discharge once reaching the threshold to protect batteries from over-damage.
Q2: Is it suitable for dusty outdoor field sites like telecom towers and substations?
A2: Yes. It adopts pure resistive structure without fragile electronic circuits.
Dust-resistant cabinet and forced air cooling ensure stable performance under harsh field conditions.
Q3: Can we export test data and discharge curves for acceptance audit?
A3: Yes. The optional data logger records real-time voltage, current and time.Test data and discharge curves can be exported via USB for inspection reports.
Q4: Can one unit cover different battery voltage specifications?
A4: Yes, the DC working voltage range is customizable (48V~380V DC). We tailor the load bank according to your battery system voltage.
Q5: Is this unit movable for tests at different locations?
A5: Yes. It comes as an integrated cabinet with heavy-duty casters and high-current quick terminals for easy transport and fast wiring.
Q6: What current ratings are available?
A6: Standard options: 300A, 400A, 500A continuous discharge current. Custom current ratings are also acceptable.
