4 layers41.5 × 75.5 mm
4 layers47 × 62.5 mm
Roboboat bms v2
MHSeals/MHSeals-BMSBattery management board for 4S Li-Po
- Size
- 47 × 62.5 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 32
- Pads
- 104
- Tracks, vias
- 180, 10
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 29 May 2025
- Updated
- 19 Dec 2025
Overview
Roboboat bms v2 is an open-source printed circuit board by MHSeals, from the MHSeals/MHSeals-BMS repository on GitHub. It is a 4-layer board of 47 × 62.5 mm with 37 parts on 32 nets, routed with 180 tracks and 10 vias.
It is built around the IRFP7430PBF, B5B-XH-AM and BSS84, with the XT90PW-F and XT90PW-M.G.Y among its other parts. Its parts include 12 resistors, 6 capacitors, 5 connectors, 3 transistors and 1 IC. It belongs with the power boards of this library.
Main components
5
IRFP7430PBF
TO-247AC-3-55℃~+175℃ 1 N-channel 1.46nF 14.24nF 1mΩ@10V 2.2V 366W 404A 40V 460nC TO-247AC-3 MOSFETs ROHSInfineon TechnologiesMOSFETs
B5B-XH-AM
插件,P=2.5mm-25℃~+85℃ 1 14.9mm 1x5P 2.5mm 250V 3A 5 5.75mm 5P 7mm Brass K Pin、With post PA66 Through Hole Tin UL94V-0 White XH 插件,P=2.5mm Wire To Board Connector ROHSJSTWire To Board Connector
BSS84
SOT-23-55℃~+150℃ 1 P-Channel 130mA 2.8pF 24.6pF 2V 3.2Ω@5V 300mW 4.7pF 50V 590pC@10V SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETsXT90PW-F
THrough holeTHroughhole New Arrivals ROHSChangzhou Amass ElecUncategorised
XT90PW-M.G.Y
-0.4mΩ 30A 7.4mm 8/10/12AWG DC 500V Gold Plated PA Plug、- Yellow - Power connector / plug connector ROHSChangzhou Amass ElecPlug
README
README.mdMHSeals-BMS
Battery management board for 4S Li-Po
Features
- Cell monitoring
- Cell balancing
- Hot-swap
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100 | Resistor_SMD:R_1206_3216Metric | R1, R2, Rc1, Rc2, Rc3, Rc4, Rc5, Rf1 |
| 5 | 1uF | Capacitor_SMD:C_0603_1608Metric | Cc1, Cc2, Cc3, Cc4, Cc5 |
| 3 | .1uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3 |
| 3 | 1M | Resistor_SMD:R_0603_1608Metric | R3, R4, R5 |
| 2 | IRFP7430PBF | Package_TO_SOT_THT:TO-247-3_Vertical | Q1, Q5 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C4 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 10uF | Capacitor_SMD:C_1206_3216Metric | Cf1 |
| 1 | 1N4004 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | 4.7uF | Capacitor_SMD:C_1206_3216Metric | C6 |
| 1 | 5m | Resistor_SMD:R_2512_6332Metric | Rsns1 |
| 1 | B5B-XH-A | Connector_JST:JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical | J6 |
| 1 | BQ76920PW | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
| 1 | BSS84 | Package_TO_SOT_SMD:SOT-23 | Q3 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | JST_XH Thermistor 2 Pin Connector | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J7 |
| 1 | LOGO | LOGO | G*** |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | XT90PW-F | footprints:AMASS_XT90PW-F | J3 |
| 1 | XT90PW-M | footprints:AMASS_XT90PW-M | J4 |
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Questions
How big is the Roboboat bms v2 PCB?
It measures 47 × 62.5 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Roboboat bms v2 use?
37 parts, built around the IRFP7430PBF, B5B-XH-AM, BSS84 and XT90PW-F. 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 Roboboat bms v2 KiCad files?
From the MHSeals/MHSeals-BMS repository on GitHub, at the commit this page was made from: the board is roboboat bms v2/roboboat bms v2.kicad_pcb and its schematic Hotswap/Hotswap.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Roboboat bms v2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask MHSeals before reusing the design.