2 layers80.8 × 60.5 mm
2 layers80.8 × 60.5 mm
LION2CELL02
mlab-modules/LION2CELL021Dual-cell Li-Ion Battery management system with I2C interface and USB-C charging.
- Size
- 80.8 × 60.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 104
- Nets
- 70
- Pads
- 343
- Tracks, vias
- 745, 91
- Pours
- 13
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 17 Jul 2024
- Updated
- 25 Feb 2025
Overview
LION2CELL02 is an open-source printed circuit board by mlab-modules, from the mlab-modules/LION2CELL02 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 80.8 × 60.5 mm with 104 parts on 70 nets, routed with 745 tracks and 91 vias.
It is built around the NCP21XV103J03RA, DMTH3002LPS and 1N4148WS, with the USB4105-GF-A among its other parts. Its parts include 30 capacitors, 29 resistors, 12 connectors, 8 diodes and 4 transistors. It belongs with the power boards of this library.
Main components
4
NCP21XV103J03RA
0805-40℃~+125℃ 1.25mm 10kΩ 200mW 2mW/℃ 2mm 3900K 3934K 3944K 440uA ±3% ±5% 0805 NTC Thermistors ROHSMurataNTC ThermistorsDMTH3002LPS
PowerDI5060-8MOSFETsDiodes Incorporated
1N4148WS
SOD-3231.25V@150mA 100V 150mA 1uA@75V 200mW 2A 4ns Independent SOD-323 Switching Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Switching Diodes
USB4105-GF-A
SMD-40℃~+85℃ 1 12P 48V 5A Black Female Surface Mount, Right Angle Type-C USB 2.0 SMD USB Connectors ROHSGlobal Connector Technology (GCT)USB Connectors
README
README.mdLION2CELL02 - Dual-cell Li-Ion BMS with I2C interface and USB-C charging.
The LION2CELL02 module is designed to manage the charging and protection of the 2-cell Li-Ion battery stack. It incorporates advanced safe and efficient battery management features, utilizing the BQ40Z50-R2 fuel gauge and BQ25792 battery charger ICs.
Features
The LION2CELL02 module include USB-C connector for quick charge connection. This allows for easy integration with USB-C power sources.
BQ40Z50-R2 - Fuel Gauge
- Utilizes Impedance Track™ technology for accurate charge measurement.
- High-side protection N-FETs control.
- Integrated cell balancing during charging or at rest.
- Programmable protection features (voltage, current, temperature, charge timeout).
- JEITA, enhanced charging, and adaptive charging algorithms.
- Supports TURBO Mode 2.0 and Battery Trip Point (BTP).
- LED display for battery status.
- SMBus v1.1 interface for communication with the charger and host systems.
BQ25792 Battery Charger
- Supports USB BC 1.2 charging standard.
- High-efficiency buck-boost charging for Li-Ion batteries.
- Programmable input current, charge current, and charge voltage.
- Integrated power path management.
- Protection features including overvoltage, undervoltage, overcurrent, and thermal protection.
- Low quiescent current for extended battery life.
Power Delivery
The module supports BC 1.2 for charging. For the full USB Power Delivery (PD) support, an external USB PD controller is required. The MLAB USBPDSINK01 module can be used to enable PD functionality.
Usage Instructions
- Equip the LION2CELL02 module with pair of the suitable 16850 Li-Ion batteries.
- Connect a USB-C power source to the module. For standard charging, ensure the power source complies with BC 1.2.
- For USB PD, connect the USBPDSINK01 module to enable PD negotiation and charging.
- Monitor the LED indicators for battery and charging status.
- Connect to an MCU and use I2C/smbus for advanced features.
Safety and Protection
- The module includes multiple layers of protection for voltage, current, and temperature to ensure safe operation.
- Integrated cell balancing ensures equal charging across all cells, preventing overcharge and extending battery life.
Applications
- UPS/battery backup systems
- Stand-alone measurement devices
- Scientific equipment
Additional Resources
For further information, refer to the datasheets:
Parts
104| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 10u | Capacitor_SMD:C_0805_2012Metric | C3, C4, C6, C7, C8, C11, C19, C25, C26, C27, C30, C31 |
| 7 | 100nF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C17, C18, C21, C23, C29 |
| 6 | 100 | Resistor_SMD:R_0805_2012Metric | R8, R20, R32, R33, R34, R36 |
| 6 | LED | Mlab_D:LED_1206 | D1, D3, D4, D5, D7, D8 |
| 5 | 10k | Resistor_SMD:R_0805_2012Metric | R11, R13, R14, R15, R24 |
| 5 | 5k1 | Resistor_SMD:R_0805_2012Metric | R1, R2, R19, R27, R28 |
| 4 | CONN1_1 | Mlab_CON:WAGO256 | J2, J3, J8, J9 |
| 4 | Fiducial | Fiducial:Fiducial_1mm_Mask2mm | FID1, FID2, FID3, FID4 |
| 4 | M3 | Mlab_Mechanical:MountingHole_3mm | H1, H2, H3, H4 |
| 4 | NCP21XV103J03RA | Resistor_SMD:R_0805_2012Metric | TH1, TH2, TH3, TH4 |
| 3 | 10M | Resistor_SMD:R_0805_2012Metric | R18, R22, R23 |
| 3 | DMTH3002LPS | Mlab_T:D_POWERDI5060-8_6.0x5.1mm_P1.27mm | Q1, Q3, Q5 |
| 3 | HEADER_2x01_PARALLEL | Mlab_Pin_Headers:Straight_2x01 | J6, J7, J10 |
| 2 | 100nF | Capacitor_SMD:C_0603_1608Metric | C5, C24 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C13, C36 |
| 2 | 1uF | Capacitor_SMD:C_0805_2012Metric | C12, C35 |
| 2 | 2.2uH | Inductor_SMD:L_Vishay_IHLP-2020 | L1, L2 |
| 2 | 47nF | Capacitor_SMD:C_0805_2012Metric | C9, C10 |
| 2 | SW_Push | Mlab_SW:SW_PUSH_SMALL | SW1, SW2 |
| 1 | 100k | Resistor_SMD:R_0805_2012Metric | R4 |
| 1 | 127k | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 15k | Resistor_SMD:R_0805_2012Metric | R12 |
| 1 | 18650 | Mlab_Batery:BAT_BK-18650-PC4_no_screws | B1 |
| 1 | 1N4148WS | Diode_SMD:D_0805_2012Metric | D6 |
| 1 | 2.2uF | Capacitor_SMD:C_0805_2012Metric | C16 |
| 1 | 22nF | Capacitor_SMD:C_0805_2012Metric | C38 |
| 1 | 2k2 | Resistor_SMD:R_0805_2012Metric | R7 |
| 1 | 2mR | Resistor_SMD:R_2512_6332Metric | R35 |
| 1 | 30.31k | Resistor_SMD:R_0805_2012Metric | R6 |
| 1 | 300R | Resistor_SMD:R_1206_3216Metric | R17 |
| 1 | 44k2 | Resistor_SMD:R_0805_2012Metric | R10 |
| 1 | 4u7 | Capacitor_SMD:C_0805_2012Metric | C20 |
| 1 | 5.24k | Resistor_SMD:R_0805_2012Metric | R5 |
| 1 | 8k2 | Resistor_SMD:R_0805_2012Metric | R9 |
| 1 | AP2305AGN-HF-3 | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | BQ25792RQMR1 | Mlab_IO:Texas_RQM0029A_VQFN-HR-28_4x4mm_P0.5mm | U1 |
| 1 | BQ40z50-R2 | Mlab_IO:Texas_RSM0032A_VQFN-32-4.1x4.1-EP-1.4 | U3 |
| 1 | HEADER_1x02 | Mlab_Pin_Headers:Straight_2x01 | J11 |
| 1 | HEADER_2x03_PARALLEL | Mlab_Pin_Headers:Straight_2x03 | J5 |
| 1 | HEADER_2x05_PARALLEL | Mlab_Pin_Headers:Straight_2x05 | J12 |
| 1 | JUMP_4X2 | Mlab_Pin_Headers:Straight_2x04 | J4 |
| 1 | Jumper_2_Open | Mlab_Pin_Headers:Straight_2x01 | JP1 |
| 1 | LMR14050 | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias | U2 |
| 1 | PDS760-13 | Diode_SMD:D_PowerDI-5 | D2 |
| 1 | USBC_USB4105-GF-A | Mlab_CON:USBC GCT_USB4105-GF-A | J1 |
Questions
How big is the LION2CELL02 PCB?
It measures 80.8 × 60.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LION2CELL02 use?
104 parts, built around the NCP21XV103J03RA, DMTH3002LPS, 1N4148WS and USB4105-GF-A. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the LION2CELL02 KiCad files?
From the mlab-modules/LION2CELL02 repository on GitHub, at the commit this page was made from: the board is hw/sch_pcb/LION2CELL02.kicad_pcb and its schematic hw/sch_pcb/LION2CELL02.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LION2CELL02 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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