Overview
The Jiabaida (JBD) SP14S004 is a smart Battery Management System (Smart BMS) designed for 7S to 14S lithium battery packs, supporting both 3.7V Li-ion and 3.2V LiFePO4 cells. It features built-in Bluetooth and UART communication for monitoring and parameter setting via mobile app, PC tool, and a UART LCD display.
Key Features
- Supports automatic identification of series string count: 7S, 8S, 9S, 10S, 11S, 12S, 13S, 14S
- Communication: UART; built-in Bluetooth supported (iOS and Android)
- Balance function (static balance / charge balance)
- Temperature sensing (1 internal sensor + 1 external sensor)
- Protection functions indicated: overcharge, over-discharge, overcurrent, short circuit, temperature protection; balance function
- Supports UART LCD display monitoring (UART display supported; accessories may be required separately)
Specifications
| Product name | Battery Management System |
| Type | Smart BMS |
| Model | SP14S004 |
| Supported strings | 7S-14S (automatic identification) |
| Battery type | 3.7V Li-ion / 3.2V LiFePO4 |
| Voltage | 24V / 36V / 48V |
| Current range | 20A-50A |
| Continuous / peak current (1s) |
20A continuous, 60A peak (1s) 30A continuous, 90A peak (1s) 40A continuous, 120A peak (1s) 50A continuous, 150A peak (1s) |
| Communication | UART |
| Bluetooth | Supported; built-in BT |
| Display support | Supported; UART display |
| Balance model | Static balance / charge balance |
| Balance current | 20-55 mA (options shown: 25 mA / 40 mA / 55 mA) |
| Size | 63 x 52 x 12 mm (also listed as 63 x 52 x 10 mm) |
| Features | Good heat dissipation; multiple communication |
| Application | Electric products |
Temperature protection parameters (values shown)
| Overtemperature (Charge) protection value | 60 / 65 / 70 °C |
| Overtemperature (Charge) release value | 50 / 55 / 60 °C |
| Undertemperature (Charge) protection value | -15 / -10 / -5 °C |
| Undertemperature (Charge) release value | -10 / -5 / 0 °C |
| Overtemperature (Discharge) protection value | 70 / 75 / 80 °C |
| Overtemperature (Discharge) release value | 60 / 65 / 70 °C |
| Undertemperature (Discharge) protection value | -25 / -20 / -15 °C |
| Undertemperature (Discharge) release value | -15 / -10 / -5 °C |
| FET high temperature protection (Built-in) value | 85 / 90 / 95 °C |
| FET high temperature protection (Built-in) release value | 65 / 70 / 75 °C |
Balance function parameters (values shown)
| Equalization turn-on voltage | 3.85 / 3.90 / 3.95 V |
| Turn-on differential pressure | 15 mV |
| Balance current | 25 / 40 / 55 mA |
| Balance model | Charge equalization / static equalization |
| Balance type | Time-sharing / pulse type equalization |
Interfaces & Wiring Notes
- UART connection supports PC host (computer) and LCD display monitoring.
- Mobile monitoring supported via the xiaoxiangElectric app (built-in Bluetooth).
- Interface labels shown: C-Wire, B-Wire, NTC, Internal Bluetooth, Balance Wire Port, Discharge Switch Interface.
- Wiring diagrams are provided for 7S through 14S configurations.
What’s Included
- 1x SP14S004 Smart BMS with built-in Bluetooth
- Balance wires
Applications
- Electric scooter
- Electric bicycle
- Electric tools
Manuals
- Mobile app (xiaoXiangElectric) download: https://www.jiabaida.com/appdown/index.html
- PC tool (JBDTools): https://jbdtools.oss-cn-beijing.aliyuncs.com/packfile/JBDTools.zip
For wiring guidance and parameter setup support, contact service@tsolar.top or visit https://tsolar.top/.
Details
Use the XiaoxiangElectric app (iOS/Android) to check pack status and adjust supported parameters via Bluetooth.
Wiring reference for connecting the balance lead harness when configuring a 7S pack.
For 8S builds, follow the numbered cell tap order to avoid reversed connections.
A complete 14S connection guide for the main leads and the balance connector wiring order.
Protection and balancing parameters can be configured to match your cells and operating environment.
Key interfaces include the balance wire port, NTC temperature sensor input, and UART for PC/LCD communication.
Bluetooth monitoring covers battery information, switch control, discharge data, and multiple safety protections.
Designed for lithium battery packs in electric mobility projects that need balancing, temperature sensing, and data access.
Suitable for a wide range of lithium pack applications, from energy storage to e-bikes and low-speed vehicles.
Automated SMT mounting and AOI inspection equipment supports consistent PCB assembly.
Jiabaida JBD smart BMS units are assembled and performance-tested on dedicated production lines with automated screw locking and glue dispensing.
Multiple payment options and standard export packaging support straightforward ordering and delivery.
