XW-5V3A512CH Cell Grading Machine for 18650/21700/26650/32700 Cylindrical Battery
Model: XW-5V3A512CH
Application: cylindrical lithium battery cell formation, capacity grading and consistency testing
Test range: 5V, 3A current, 512CH channel configuration
Cell type: 18650, 21700, 26650 and 32700 cylindrical cells
Usage: cell production inspection, battery pack cell matching and quality traceability
Warranty: 1 year
XW-5V3A512CH Cell Grading Machine for 18650/21700/26650/32700 Cylindrical Battery is a high-channel cylindrical lithium-ion battery formation and capacity grading machine. It is used for 18650, 21700, 26650 and 32700 cylindrical cells, helping battery manufacturers complete formation, charge-discharge capacity grading, consistency testing and cell matching before pack assembly.
For newly assembled lithium-ion cells, formation is the first controlled charging process. It helps form the passivation layer on the negative electrode surface, also known as the SEI film. After formation, capacity grading tests each cylindrical cell through charge and discharge, classifies cells by capacity and performance data, and supports more balanced pack production.
Machine Function
- Run formation charging for newly assembled cylindrical lithium-ion cells
- Measure cell capacity through controlled charge and discharge testing
- Grade cells by capacity, voltage behavior and consistency data
- Support high-channel batch testing for battery cell production
- Record test data through computer control software for traceability
Key Features
- 5V voltage, 3A current and 512CH channel configuration
- Suitable for 18650, 21700, 26650 and 32700 cylindrical cells and similar cylindrical cells
- Battery detection cabinet with cell clamps and clamp boards
- Charging constant-current and constant-voltage source
- Discharging constant-current source for capacity grading
- Current sampling, voltage sampling, storage control circuit and main control CPU
- Computer system and control software for process setting and data management
Applications
- Cylindrical lithium-ion battery formation
- 18650, 21700, 26650 and 32700 cylindrical cells capacity grading
- Cell matching before battery pack assembly
- Battery factory production testing and quality control
- Energy storage, light electric vehicle and power tool battery cell preparation
Product Images
System Structure
The battery grading machine is mainly composed of a computer system, control software, communication interface and battery detection cabinet. The detection cabinet includes clamp boards, cell clamps, charge and discharge circuits, storage control circuit, sampling circuits, main control CPU, data memory, single-chip microcomputer program and control panel.
Why Cell Grading Matters
For cylindrical battery pack assembly, cells with different capacities or voltage behavior can reduce pack consistency and service life. Formation and capacity grading help identify cells with similar performance, so pack manufacturers can build more balanced battery packs and reduce later quality risks.
Information Needed for Quotation
- Cylindrical cell model, size and capacity range
- Required formation and grading current
- Channel quantity and cabinet layout requirement
- Charge-discharge test steps and aging time
- Data export and production traceability requirements
- Factory power supply and workshop layout
FAQ
What is the difference between formation and capacity grading?
Formation is the first controlled charging process used to form the SEI film on a newly made lithium-ion cell. Capacity grading tests the cell by charge and discharge, then classifies it according to capacity and performance data.
What cells can this machine test?
This model is used for 18650, 21700, 26650 and 32700 cylindrical cells and similar cylindrical lithium-ion cells. Fixtures and cabinet layout should be confirmed according to the exact cell size.
How should I choose the current range?
The current range should be selected according to cell capacity, charge-discharge rate and production test process. XWELL can recommend a suitable current and channel configuration after checking your cell specification.
Related Equipment
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- Cylindrical cell CCD polarity inspection machine for cell direction and polarity checking
- Cylindrical battery pack spot welding machine for nickel strip and busbar welding
- Cylindrical battery PVC heat shrinking machine for finished pack insulation wrapping
- Battery BMS testing machine for protection board testing before pack assembly
- Battery charge and discharge aging machine for finished pack aging and cycle testing
Request a Cylindrical Cell Grading Solution
Send us your cylindrical cell model, capacity, testing current, required channel quantity and formation or grading process. XWELL can recommend a suitable cell grading machine configuration for your production project.
| Equipment structure | |
| Number of equipment channels | 512 channels |
| Size | 1430Lmm x W500mm x 1840Hmm |
| Fixture form | four-wire method fixture |
| Fixture distance | 35mm |
| Support battery height | 10-100mm |
| Working power | 3-phase five-wire AC380V±10% 50HZ |
| Working power | ≤22KW |
| Working environment | temperature 0 ~ 40 °C, relative humidity≤80% |
| Cooling method | natural air intake, upward exhaust |
| Channel parameters | |
| Voltage measurement range | 0-5V,resolution 1mV |
| Battery voltage range | charging 0-4.5V; discharging 4.5-2V |
| Constant voltage range | 2.5-4.5V |
| Voltage accuracy | ±(1 ‰ reading + 1 ‰ full scale) |
| Current range | charge 30mA -3A; discharge 30mA -3A, resolution 1mA |
| Current accuracy | ±(1 ‰ reading + 1 ‰ full scale) |
| Type | Normal version or Energy regenerative, save energy version (optional) |
| Software functions | |
| Control mode | software installed computer connected equipment work, wholecabinet control |
| Communication method | RS485, baud rate 57600 |
| Process setting | up to 32 steps and 256 cycles can be set |
| Charging mode | constant current, constant voltage |
| Charging cut-off conditions | voltage, current, time, capacity |
| Discharge mode | constant current |
| Discharge cut-off conditions | voltage, time, capacity |
| Protection function | over voltage, under voltage, over current, under current, over capacity protection, power failure protection, data breakpoint recovery |
| Time range | arbitrarily set within 0-30000 minutes, time unit is min |
| Time accuracy | ≤±1 ‰ |
| Sampling inspection cycle | ≤8s |
| Minimum data recording frequency | ≤8s |
| Battery sorting | sort by (capacity, time, open circuit voltage, discharge platform, etc.) |
| Data processing | can record voltage, current, time, capacity and other data, automatically calculate constant currentcharge ratio, capacity loss, discharge eficiency, average voltage, median voltage and other data, provide data graphsand cycle diagrams; can generate generated text, EXCEL, WORD or MDB database format file |