Overview
The JBD SP17S005 is a Smart Battery Management System (BMS) board for lithium battery packs, supporting LiFePO4 and Li-ion chemistries with UART communication and built-in Bluetooth (BT). It supports automatic identification of string count from 10S to 17S, making it suitable for 36V/48V-class battery packs (including common 16S 48V builds).
Key Features
- Smart BMS with built-in Bluetooth (BT) and UART communication
- Automatically identifies battery string count: 10S–17S
- Monitoring and parameter setting supported (read information, turn on/off, set parameter, BT)
- 3 NTC temperature sensor channels: 1 internal, 2 external
- Balance function and multiple protection functions (overcharge, over-discharge, overcurrent, short circuit, temperature protection)
- Good heat dissipation design (aluminum alloy heat sink; high thermal conductivity silica gel mentioned)
- “5000W Super Power TVS” and “internal resistance MOS · High Current Efficiency” stated
- Built-in BT; reserve UART interface (isolated) stated
Specifications
| Product name | Battery Management System |
| Type | Smart BMS |
| Model | SP17S005 |
| Pack voltage (stated) | 36V, 48V |
| Supported strings | 10S–17S (automatic identification supported) |
| Current (stated) | 20A–120A |
| Current options referenced in product title | 40A / 50A / 80A |
| Communication | UART |
| Bluetooth | Yes (built-in BT) |
| Support display | Yes |
| Display type | UART Display |
| Size | 102mm * 65mm * 12mm |
| Applicable battery type | LiFePO4 & Li-ion battery |
| NTC | 3 NTC (1 internal, 2 external) |
Balance Function (stated)
| Equalization turn-on voltage | 3.85 / 3.90 / 3.95 V |
| Turn on differential pressure | 15 mV |
| Balance current | 30 / 60 / 90 mA |
| Balance model | Charge equalization; Static equalization |
| Balance type | Time-sharing / pulse equalization |
Interfaces & Ports (labeled)
- C- Wire
- B- Wire
- NTC interface
- Discharge switch interface
- UART port (PC / LCD connection indicated)
- Balance wire port
- Internal Bluetooth
What’s Included
- BMS with built-in BT
- Balance wires
Applications
- Solar street lamp
- Electric tool
- AGV
- Energy storage UPS
- Emergency power
- Marine motor
- E-bicycle
- E-car
- Low speed vehicle
Software / Parameter Setup (stated)
- Phone app: xiaoxiangElectric App (iOS & Android) for monitoring and parameter changes
- PC software: JBD PC Tool Box (UART)
- UART LCD displayer: supports parameter monitoring on an LCD display
- UART communication can be converted to CAN bus communication using a separately purchased module converter
- Smart BMS accessories may need to be purchased separately
Notes
- Images show certificate names such as RoHS, ISO 9001, SGS, Computer Software Copyright, Invention Patent, and Test Report (documents not included with the product listing).
- For technical support or pre-purchase compatibility questions, contact https://tsolar.top/ or service@tsolar.top.
Details
Built for 10S–17S lithium packs, the SP17S005 combines smart protection, balancing, and wireless monitoring in one compact board.
Balancing parameters support multiple turn-on voltages and balance-current options for fine-tuning pack consistency.
Protection design emphasizes TVS surge suppression and efficient MOS switching for high-current battery builds.
Bluetooth app access supports real-time status checks, switching control, and parameter configuration.
Clear port labeling simplifies wiring for main leads, balance harness, NTC sensors, and UART/LCD accessories.
Hardware layout includes built-in Bluetooth plus UART connectivity and three temperature-sensor channels (1 internal, 2 external).
Thermal and insulation stack uses an aluminum heat sink with silicone and mylar layers to help manage heat and safety clearance.
Heat-dissipation materials and shunt design target stable performance under demanding load conditions.
Automatic string-count identification helps support common 36V/48V-class packs without manual series setup.
Common applications include energy storage, UPS/emergency systems, and electric mobility such as e-bikes and low-speed vehicles.
Core protections cover charge/discharge limits, short-circuit and overcurrent events, and temperature-based safeguards.
Documentation highlights quality-system and compliance-related certificates provided by the manufacturer.
Manufacturing workflow includes SMT placement and inspection steps to support consistent board assembly quality.
OEM/ODM support is promoted through regular exhibitions and customer-facing demos.
Production images include multi-stage assembly plus finished-product performance testing before delivery.
Multiple payment options and standard export packaging support worldwide shipping workflows.
Wiring reference clarifies C− and B− connections and the balance-lead order for 10S packs.
A separate wiring reference is provided for 11S setups to reduce connection mistakes during installation.
The JBD SP17S005 BMS connects C- to charger/discharge negative and B- to the pack’s total negative, with 12 balance leads wired to the cell tap points.
JBD SP17S005 smart BMS wiring uses a 13S balance lead sequence with B- tied to pack negative and C- as the charge/discharge negative.
The JBD SP17S005 smart BMS uses separate B- and C- terminals with a 14‑series balance lead harness for wiring to the battery pack.
The 15S cabling layout maps the B- and C- connections and the full balance wire order from B0 through the 15th string for correct pack wiring.
The JBD SP17S005 smart BMS wiring layout labels B-, C- and the 16S balance lead sequence to help connect the battery pack correctly.
The 17S wiring layout connects B- to the pack negative, C- to charge/discharge negative, and the balance leads from B0 through 17 in sequence.
