4 layers80 × 56 mm
2 layers40 × 23 mm
Li Po Charger
valeronm/Li-Po-Charger2Schematic and PCB for Li-Po charger with power path, power management inputs, charging state and 3.3V output and I2C fuel gauge
- Size
- 40 × 23 mm
- Copper layers
- 2
- Thickness
- 1 mm
- Parts
- 34
- Nets
- 19
- Pads
- 110
- Tracks, vias
- 215, 23
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 24 Sep 2025
- Updated
- 12 Oct 2026
Overview
Li Po Charger is an open-source printed circuit board by valeronm, from the valeronm/Li-Po-Charger repository on GitHub, published under the MIT licence. It is a 2-layer board of 40 × 23 mm with 34 parts on 19 nets, routed with 215 tracks and 23 vias.
It is built around the ME6211C33M5G-N, TP4056-42-ESOP8 and B5818WS, with the IRLML6401 and SD05 among its other parts. Its parts include 11 resistors, 8 connectors, 7 capacitors, 3 ICs and 2 diodes. It belongs with the power boards of this library.
Main components
5
ME6211C33M5G-N
SOT-23-5-40℃~+150℃ 1 120mV@(100mA) 3.3V 500mA 50uVrms 60uA 6V 70dB@(1kHz) Fixed Over Current Protection、Enable、Short Circuit Protection Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMICRONEVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
TP4056-42-ESOP8
ESOP-8-40℃~+85℃ 1 1A 2uA 4.2V 4V~8V Charging IC Lithium Battery Support ESOP-8 Battery Management ROHSTOPPOWERBattery Management
B5818WS
SOD-323Schottky Diodeshongjiacheng
IRLML6401
SOT-23-55℃~+150℃ 1 P-Channel 1.3W 125pF 12V 15nC@5V 180pF 4.3A 830pF 85mΩ@1.8V 950mV P-Channel SOT-23 MOSFETs ROHSKEXINMOSFETsSD05
SOD-323-55℃~+125℃ 1 10pF 17A 18V 1uA 350W 5V 6V IEC 61000-4-2、IEC 61000-4-4 TVS Unidirectional SOD-323 ESD and Surge Protection (TVS/ESD) ROHSMDDESD And Surge Protection (TVS/ESD)
README
README.mdLi-Po-Charger
Schematic and PCB for Li-Po charger with power path, power management inputs, charging state and 3.3V output and I2C fuel gauge
Parts
34| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 10K | Resistor_SMD:R_0402_1005Metric | R4, R5, R6, R8, R9 |
| 3 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C5 |
| 3 | 10uF | Capacitor_SMD:C_0603_1608Metric | C4, C6, C7 |
| 2 | 100K | Resistor_SMD:R_0402_1005Metric | R7, R10 |
| 2 | 5.1K | Resistor_SMD:R_0402_1005Metric | R2, R3 |
| 1 | 1.5K | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 10K | Potentiometer_SMD:Potentiometer_Bourns_TC33X_Vertical | RV1 |
| 1 | 1K | Resistor_SMD:R_0402_1005Metric | R11 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | B5818WS | Diode_SMD:D_SOD-323 | D1 |
| 1 | Control | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J6 |
| 1 | IRLML6401 | Package_TO_SOT_SMD:SOT-23-3 | Q1 |
| 1 | I^{2}C 1 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | I^{2}C 2 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | I^{2}C 3 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | JST_2mm_LiPo | SparkFun-Connector:JST_1x02_P2.0mm_Horizontal_SMD | J2 |
| 1 | LOGO | Graphics:panda | G*** |
| 1 | MAX17048 | Package_DFN_QFN:DFN-8-1EP_2x2mm_P0.5mm_EP0.8x1.6mm | U1 |
| 1 | ME6211C33M5 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | Power | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J8 |
| 1 | SD05 | Diode_SMD:D_SOD-323 | D2 |
| 1 | Status | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J7 |
| 1 | TP4056-42-ESOP8 | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm | U3 |
| 1 | USB_C_Receptacle_PowerOnly_6P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-17 | J1 |
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Questions
How big is the Li Po Charger PCB?
It measures 40 × 23 mm and has 2 copper layers, 1 mm thick.
What parts does the Li Po Charger use?
34 parts, built around the ME6211C33M5G-N, TP4056-42-ESOP8, B5818WS and IRLML6401. 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 Li Po Charger KiCad files?
From the valeronm/Li-Po-Charger repository on GitHub, at the commit this page was made from: the board is Li-Po Charger.kicad_pcb and its schematic Li-Po Charger.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Li Po Charger design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).