Multi-Channel Battery Testing Systems
Running independent test procedures on dozens or hundreds of channels simultaneously — with per-channel safety, batch start workflows, combined-channel high-current capability, and centralized MIMS data collection.
How Multi-Channel Battery Testing Works
From independent channel control to system-scale data management — a practical guide to configuring and operating multi-channel battery test platforms.
What Multi-Channel Testing Enables
Multi-channel battery test systems allow dozens to hundreds of cells to run simultaneously, each on its own independent test procedure, with its own safety limits, data file, and status. This parallelism is the foundation of high-throughput R&D, formation, and QA programs. Each channel operates independently — one channel completing, faulting, or being suspended has no effect on its neighbors.
How Channels Are Organized
Maccor systems are organized around controller boards, each managing a fixed number of channels:
- 8-channel boards: Board speed 10–50 ms; pulse mode 100 µs/GSM or 1 ms.
- 4-channel boards: Board speed 4.6–50 ms; pulse mode 100 µs/5 ms.
- 1-channel boards: Board speed 2–50 ms; pulse mode 1.25 ms/1.25 ms.
- Combined channels: Parallel two or more channels on the same board (1+1, 1+3, or 1+7 configurations) to multiply current capacity. The primary channel runs the procedure; secondary channels are Blocked. Requires UPS.
- Independent operation: Each channel maintains its own step, cycle count, accumulated capacity, and auxiliary readings — regardless of what other channels are doing.
Starting and Managing Many Channels
Several workflow tools are designed specifically for multi-channel operation:
- Start Test with File: A TAB-delimited text file assigns procedure, filename, C-rate, and comment to each channel in a single operation — ideal for loading a full rack simultaneously.
- Test Initialization Screen: Enabled via System.ini, this screen allows per-channel adjustment of C-rate and cycle count before starting a batch — useful when cells have slightly different capacities.
- Auto-Name: Automatically assigns sequential filenames across a group of channels, eliminating manual naming errors during batch starts.
- Suspend / Resume Range: Suspend or resume all channels within a defined channel range in one action.
- Clear All / Reset All: System-wide channel management for end-of-test cleanup.
Real-Time Monitoring Across Channels
Four operational screens provide different views of multi-channel status:
- Normal Screen: All channels at a glance — status, color-coded by mode (charge, discharge, rest, complete, problem).
- Intermediate Screen: Up to 30 channels showing cycle number, step, current, voltage, and capacity.
- Quick Screen: Up to 48 channels in bold format with voltage trend mini-graphs; right-click to set voltage bands and color coding.
- Detailed Screen: Single-channel deep-dive including all auxiliary readings, loop counts, and real-time values.
- Communications Status: System-level message rate (~875/s for lab systems) confirms the controller is healthy.
Where Multi-Channel Systems Add Value
The throughput advantage of multi-channel operation scales directly with channel count.
| Application | Channel Count Typical |
|---|---|
| Cell characterization (R&D) | 8–32 channels |
| Comparative cycling studies | 16–64 channels |
| Formation lines | 128–1000+ channels |
| QA / incoming inspection | 32–128 channels |
| Pack / module validation | 4–16 combined-channel pairs |
Benefits for Engineers and Technical Buyers
Multi-channel architecture multiplies lab throughput without multiplying operator workload.
- Parallel throughput: Test 64 cells in the same calendar time it takes to test one — critical for statistically meaningful aging studies.
- Independent safety: Each channel has its own hardware limits — a single cell venting or tripping does not affect adjacent channels.
- Centralized data: MIMS Server collects and converts all channels automatically, regardless of how many are active.
- Procedure synchronization: MIMS Server Procedure Management keeps the same procedure file version deployed across all channels and all systems.
Frequently Asked Questions
Can different channels run different procedures simultaneously?
Yes — every channel is fully independent. Channel 1 can run a formation procedure while Channel 2 runs a cycle life test and Channel 3 runs a rate capability sweep. Each channel has its own procedure assignment, filename, and safety configuration.
What is the maximum number of channels per system?
The Maccor platform scales from small lab systems to large formation lines with 1000+ channels, all managed by the same software interface and MIMS Server data infrastructure. Exact channel counts depend on the hardware configuration ordered.
How are combined channels configured?
Combined channels are set up in Setup and Check Channels under the Maintenance tab. The primary channel is set to Available and runs the procedure. Secondary channels are Blocked — they carry current but are controlled by the primary. Combined configurations require a UPS to prevent data corruption on power loss.