JBD 8S-20S 20A-80A Smart BMS for LiFePO4 & NMC Li-ion with Bluetooth & Auto Cell Detection

$11.80 USD
$16.80 USD
$5.00 USD Diskon
  • Factory Direct

  • Tech Support

  • Worldwide Shipping

  • Secure payments

Model

Product Description

The JBD DB20SA02 Smart BMS is designed for 8–20S LiFePo4 / Li-ion (NMC) battery packs with a continuous current range of 20A–80A. It adopts a high-reliability MCU + front-end acquisition architecture, providing stable performance and precise battery protection.

This model supports Bluetooth communication and passive balancing, making it ideal for lithium battery applications such as energy storage systems, power tools, and other medium-power battery packs.

Key Features

  • Supports 8–20 series LiFePo4 / Li-ion (NMC)  battery packs
  • Continuous discharge/charge current: 20A–80A
  • Smart Bluetooth communication (standard)
  • Passive balancing function
  • High-precision voltage monitoring
  • Overcharge / over-discharge protection
  • Over-current & short-circuit protection
  • Temperature protection (NTC supported: 1 built-in + 2 external)
  • Low power consumption design for long standby operation
  • PC software adjustable parameters

Protection Functions

  • Cell over-voltage & recovery
  • Cell under-voltage & recovery
  • Charge/discharge over-current protection
  • Short circuit protection
  • High / low temperature protection
  • FET over-temperature protection
  • Automatic recovery or software-controlled recovery

Technical Specifications

  • Battery type: LiFePo4 / Li-ion (NMC) Optional
  • Series: 8–20S
  • Continuous current: 20A–80A
  • Balance type: Passive balance
  • Balance current: 40–60mA
  • Communication: UART + Bluetooth (standard)
  • NTC: 1 built-in + 2 external
  • Sleep current: ≤600uA
  • Operating temperature: -20°C ~ 75°C
  • PCB size: 100 × 80 × 5 mm

Applications

  • Energy storage systems (ESS)
  • Power tools battery packs
  • Electric vehicles (low/medium power)
  • Battery pack upgrade & replacement projects
  • Industrial lithium battery systems

Note 

This BMS supports configuration via PC software. Parameters such as voltage thresholds, current limits, and protection settings can be adjusted according to application requirements.

Frequently Asked Questions
Our customer support is available Monday to Sunday
View more
Q1: How do I choose the right BMS model?
A: Please confirm your battery type, series number, continuous current,  communication requirements, and application scenario before ordering.Not sure which model to choose? Please contact Cara for professional model selection support.
Q2: What battery types are supported?
A: Please confirm your battery type, series number, continuous current,  communication requirements, and application scenario before ordering.Not sure which model to choose? Please contact Cara for professional model selection support.
Q3: What does “S” mean in BMS specifications?
A: “S” means the number of cells connected in series. For example, 8S means 8 cells in series.
Q4: What current rating should I choose?
A: The BMS current should be selected according to the battery pack load current and application. It is recommended to choose a BMS with enough current margin.
Q5: Does the BMS support communication functions?
A: Some smart BMS models support UART, RS485, CAN, Bluetooth, or WiFi communication. Hardware BMS models may not support communication.
Q6: Can you provide wiring diagrams and datasheets?
A: Yes. We can provide datasheets, wiring diagrams, and technical support for model selection and installation. If you are not sure which model to choose, please contact Cara for support.