JBD 7–24S 40A Smart BMS – Programmable Li-Ion / LiFePO4 Protection Board, 24V–84V, Bluetooth + UART, Common
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Description
The JBD (Jiabaida) 7–24S 40A Smart BMS is a programmable battery management system for lithium packs from 7 to 24 cells in series. One board covers everything from 24V to 84V packs and can be set for NMC/Li-Ion or LiFePO4 chemistry via app or PC. It protects against overcharge, over-discharge, overcurrent, short circuit and over-temperature, balances cells during charging, and provides real-time monitoring of cell voltages, current, temperature and SOC.
Key Features
- 7S–24S in One Board – Covers 24V to 84V packs; one SKU for multiple pack builds
- NMC & LiFePO4 Compatible – Chemistry and protection thresholds set via software
- 40A Continuous Current – Rated 40A continuous charge and discharge
- Common Port Design – Charge and discharge through the same terminals
- Bluetooth + UART – Monitor and configure via the Xiaoxiang app or PC software
- Real-Time Data – Cell voltages, pack current, temperature, SOC and cycle count
- Adjustable Parameters – Set OV/UV, current limits and temperature cut-offs to suit your pack
- Heating Control – Supports low-temperature battery heating for cold-condition charging
- Cell Balancing – Passive balancing during charge
- Complete Protection – Overcharge, over-discharge, overcurrent, short circuit and over-temperature
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | JBD (Jiabaida) |
| Model | DB24SA03 |
| Type | Smart BMS (software protection board) |
| Cell Configuration | 7S – 24S |
| Supported Chemistry | NMC / Li-Ion, LiFePO4 (software selectable) |
| Pack Voltage Range | 25.9V – 88.8V (NMC) / 22.4V – 76.8V (LFP) nominal |
| Continuous Charge Current | 40A |
| Continuous Discharge Current | 40A |
| Port Type | Common port (charge = discharge) |
| Communication | Bluetooth, UART |
| App | Xiaoxiang (iOS / Android) |
| Balancing | Passive, during charge |
| Temperature Sensing | NTC probes |
| Heating Control | Supported |
| Protections | OVP, UVP, OCP, SCP, OTP, low-temp |
Applications
- 24V to 84V e-bike, e-scooter and e-motorcycle packs
- E-rickshaw and light EV battery packs
- Solar and home energy storage packs
- UPS and inverter backup batteries
- Pack builders handling multiple series configurations
Package Includes
- 1 × JBD 7–24S 40A Smart BMS Board