Formation Test Chamber - 256 Channel Setup
Model: VT-FG-256
256-channel formation test chamber with temperature control (±2°C). Optimized for NMC/LFP cell production with ≥90% energy recovery.
Battery Formation & Grading Systems
The first charge that decides a cell's life. High-density formation and grading systems built for gigafactory-scale lithium battery production.
Formation & Grading
Where Every Cell Proves Its Quality
The VT-FG series forms cells with precisely controlled first charge profiles and then grades them by capacity, internal resistance and voltage — all in one automated production system with full data traceability.
- ✓ Up to 1024 independent channels per cabinet
- ✓ Regenerative discharge with ≥90% energy recovery
- ✓ ±0.05% FS accuracy across the full range
- ✓ Automated grading, sorting and label printing
- ✓ MES / ERP integration with barcode traceability
Models & Specifications
VT-FG Series Model Overview
| Model | Voltage Range | Current Range | Channels / Cabinet | Energy Recovery | Best For |
|---|---|---|---|---|---|
| VT-FG-5V10A | 0–5 V | 0.1 mA–10 A | 512 / 1024 | ≥90% | Cylindrical cell formation |
| VT-FG-5V20A | 0–5 V | 0.1 mA–20 A | 256 / 512 | ≥90% | Prismatic / pouch formation |
| VT-FG-10V10A | 0–10 V | 0.1 mA–10 A | 256 | ≥88% | High-voltage cell formats |
Systems include temperature-controlled formation rooms, tray fixtures and full factory acceptance testing.
Key Features
Engineered for Gigafactory Throughput
1024 Channels
Massive channel density cuts floor space and cost per channel for large-scale production.
Energy Recovery
≥90% of discharge energy returned to the grid — lower OpEx, lower heat, greener factory.
Formation Control
Multi-step CC/CV/CP formation profiles with per-step limits, dV/dt and rest control.
Auto Grading
Grade by capacity, IR, self-discharge and voltage consistency; sort into bins automatically.
Traceability
Barcode-linked records per cell — from electrode batch to final grade, fully retrievable.
Hot-Swap Trays
Quick-release trays reduce load/unload time between formation batches.
Fault Isolation
Per-channel protection and isolation so one bad cell never halts a batch.
MES Integration
REST/OPC-UA interfaces push data to your MES for live production dashboards.
Applications
Formation & Grading Applications
The VT-FG series is the production backbone of modern lithium battery testing.
- ✓ Formation of cylindrical, prismatic and pouch lithium-ion cells
- ✓ Capacity and IR grading before pack assembly
- ✓ Self-discharge screening with extended rest measurement
- ✓ NMC, LFP, LCO and Na-ion cell production lines
- ✓ Turnkey formation rooms with temperature control
Plan Your Formation Capacity
Tell us your cell format and daily output target — we'll engineer the complete formation and grading line.
Request a Quote →Free application consultation · 24-hour response
Product Gallery
Formation & Grading Systems
Formation Test Chamber - 512 Channel Setup
Model: VT-FG-512
512-channel climate-controlled formation chamber with MES integration. High throughput for gigafactory cell production.
Grading Test Chamber
Model: VT-GRD-AUTO
Automated grading test chamber with barcode traceability. Sorts cells into A/B/C bins by capacity and internal resistance.
Energy Recovery Formation Chamber
Model: VT-FG-REC
Regenerative formation chamber with ≥90% energy recovery. Returns discharge energy to grid, significantly reducing OpEx.
Formation Aging Temperature Chamber
Model: VT-FG-THERM
Precision climate chamber maintaining 25°C±2°C during formation aging for consistent cell quality and SEI layer formation.
Walk-in Pack Formation Chamber
Model: VT-FG-WALK
Large walk-in formation chamber for full EV pack aging. Temperature range: -40°C to +85°C with humidity control.
FAQ
Frequently Asked Questions
What is battery formation?
Formation is the first charge-discharge cycle applied to a newly manufactured lithium-ion cell. It activates the cell's electrochemistry, forms the solid electrolyte interphase (SEI) layer on the anode, and determines the cell's initial capacity and cycle life characteristics. Proper formation is critical for cell quality and consistency.
How does the grading process work?
After formation, each cell is discharged to measure its actual capacity. Cells are then sorted (graded) by capacity value, internal resistance and OCV into bins — typically A, B, C grades. The VoltTest formation system automates this entire process with up to 1024 channels per cabinet and MES integration for full traceability.
What is energy recovery in formation?
During the discharge phase of formation, instead of wasting the cell's energy as heat, the regenerative circuit feeds it back to the power grid. VoltTest formation systems recover ≥90% of discharge energy, which is critical for cell factories where thousands of channels operate simultaneously — reducing both energy cost and HVAC load.
How many channels can one formation system support?
A single VoltTest formation cabinet supports up to 256 channels. Multiple cabinets can be networked to build systems with 512, 1024 or more channels. A typical cell factory line uses 2000–5000 channels total, organized into groups of 256-channel cabinets managed by a central server.
Can the formation system integrate with MES and ERP?
Yes. VoltTest formation systems include a central management server with OPC-UA and SQL interfaces for MES/ERP integration. Every cell's formation data (current/voltage profiles, temperature, capacity, IR, grade) is stored in a database with full traceability for quality management and warranty tracking.
Related Products
Complete the Cell Production Chain
Battery Capacity Testers
Dedicated grading systems with up to 512 channels per cabinet.
View capacity tester details →
Internal Resistance Testers
Inline IR measurement to complete the grading criteria set.
View internal resistance tester specs →
Charge/Discharge Test Systems
Laboratory cyclers for process development and recipe validation.
View battery cycler specifications →Scaling Up Cell Production?
Get a formation & grading system quotation with line design, installation and operator training included.