Overview
The JBD SP04S010A is a Smart BMS (Battery Management System) / balancer board for 3S–4S battery packs, specified for 12V systems and 20A–35A current range. It supports UART and RS485 communication for monitoring and parameter setting, and is specified for 3.7V Li-ion and 3.2V LiFePO4 battery packs.
Key Features
- 3S–4S support with automatic identification of string number: Yes
- Communication: UART/RS485 (also stated as “UART/485 communication”)
- Bluetooth support: Yes; Bluetooth type stated as external Bluetooth (may require separate purchase if needed)
- Display support: Yes; display type: UART/RS485 display
- Balancing: balancing port indicated; balance current specified as 20–60 mA
- Good heat dissipation; multiple communication options
- Temperature sensing probe is referenced, with “adjustable temperature control” via upper computer (PC tool)
Communication / Usage Notes
- UART and Bluetooth share the same port and cannot be used at the same time.
- UART/Bluetooth and RS485 can be used at the same time.
- UART communication can be converted to CAN bus if needed via a separate UART-to-CAN converter module.
- UART/RS485/CAN accessories are stated as needing to be purchased separately.
Specifications
| Product name | Battery Management System |
| Type | Smart BMS |
| Model number | SP04S010A (label also shows JBD-SP04S010) |
| System voltage | 12V |
| Series strings | 3S–4S |
| Current | 20A–35A |
| Continuous current | 20–35A |
| Balance current | 20–60 mA |
| Communication | UART/RS485 |
| Support Bluetooth | Yes |
| Bluetooth type | External Bluetooth (stated as needing to be purchased separately if needed) |
| Support automatic identification of string number | Yes |
| Support display | Yes |
| Display type | UART/RS485 display |
| Applicable battery type | 3.7V Li-ion / 3.2V LiFePO4 battery pack |
| Size (stated) | 80 mm * 60 mm * 12 mm |
| Size (by current variant, stated) | 80 * 60 * 12 mm (20A) / 80 * 60 * 20 mm (30A, 35A) |
| Application (stated) | Electric products |
For accessory selection (Bluetooth module, UART/RS485 display, or UART-to-CAN converter) and tool guidance, contact https://tsolar.top/ or email service@tsolar.top.
What’s Included
- Package list text states: BMS, “Free BT”, balance wires
Applications
- Electric bicycle
- Electric tricycle
- Electric car
- Energy storage / UPS
- Recreational vehicle
- Sea motorcycle
- Solar street light
- Electrical tools
- AGV logistics vehicle
Certificates (shown)
- RoHS Certificate
- ISO 9001 Certificate
- SGS Certificate
- Test Report
- Computer Software Copyright
- Invention Patent
Details
Choose UART/RS485 communication for monitoring and parameter setup, with optional Bluetooth and display accessories.
UART/Bluetooth share one port, while RS485 can be used at the same time for flexible integration.
A temperature probe supports adjustable temperature-based protection when configured with the PC tool.
Suitable for a wide range of 12V battery-powered applications, from e-bikes and EVs to UPS and solar lighting.
Multiple payment options are available, with standard packaging and worldwide shipping by air or sea.
