BMS Box (Standard)

Last Updated on : 2022-10-10 09:51:22download

Product overview

The 4G cloud-connected battery management system (BMS) box is used to manage lithium-ion battery operation and ensure safety. The BMS box is connected to the electric bicycles with a 1-wire bus. It collects battery status and data from the BMS motherboard and then reports them to the cloud in order to monitor battery life and health.

Product details


  • Support 1-wire protocol
  • Comply with the Beijing and Wuxi Association Standards
  • BMS data management
  • LBS and Wi-Fi combo positioning
  • Route tracking
  • Fault alerts
  • Remote configuration
  • FOTA firmware updates

Product specifications

Parameters Description
Size 87.2 mm × 40 mm × 19 mm
Weight About 60g
Communication module LZ501-CN
Positioning module GUC300
Antenna Built-in 4G antenna
Bluetooth antenna Built-in Bluetooth antenna
Wi-Fi antenna Built-in Wi-Fi antenna
GPS antenna 25 mm × 25 mm × 4 mm ceramic antenna
Wiring harness Power (red), ground (black), 1-wire bus (orange)
CPU Cortex-A5, 500 MHz
Storage 128 MB RAM, 64 MB ROM
SIM card Nano SIM or eSIM card
Operational/storage temperature –2575°C/–4085°C
Power consumption Active: 5 to 7 mA. Sleep: 1.3 mA
Sensor 3-axis G-sensor
Power supply IC 9V to 90V DC-DC
LED indicator Power status (red), GPS status (blue), network status (green)
Frequency bands LTE-FDD: B1/B3/B5/B8
LTE-TDD: B34/B38/B39/B40/B41
Maximum rate LTE-FDD: 10 Mbit/s (downlink)/5 Mbit/s (uplink)
LTE-TDD: 8.2 Mbit/s (downlink)/3.4 Mbit/s (uplink)


Instructions on installing 4G BMS box (standard)

  • Step 1: Install the SIM card.
  • Step 2: Connect the wiring harness.

Harness description:

Function Description
Power supply Red wire, connected to 12V to 85V power supply
Ground Black wire, connected to the GND
1-wire bus Orange wire, connected to the BMS

The BMS box comes with a BMW 3-pin male connector. You can connect to the desired plugs with the BMW female connector.