7S 35A BMS electric bicycle accessories for 24V lithium 18650 battery pack for electric bicycle


Model Number: DLG7S 35A 
Accessory Type: Battery Accessories
Brand Name: QNBBM
Application: 3.7V rated lithium battery
battery series: 7S
over charge protection: yes
short circuit protection: yes
over discharge voltage: yes
with heat sink: yes
with temperature monitor: yes
charge port and discharge port: share the same
constant charge current: 35A 
peak discharge current : 35A

7S PCM/PCB/BMS for 24V lithium battery pack for electric bicycle and scooter and tools

Charge current: 35A

Discharge current:35A

Charge port and discharge port share the same

This PCM is applied for 3.7V LiPO battery not for LiFe battery.

We can customize any PCB from 2S to 24S lithium batteries with different current.

1. Overview

DG7S35A PCB is used for 1series battery pack.

We can design it for various lithium batteries like LiFepo4, LiMn2O4, and Li-polymer etc.

The main functions are: over charge protection, over discharge protection, over current protection, short-circuit protection, temperature protection etc.


2. Advantage

◆Use top quality (A-level) protective integrated circuit IC, from the solution of Seiko of Japan.

◆Strong load ability, constant discharge current 25/35/45/60A, use high voltage resistance, low inner

resistance power Mosfet. The heat sink will greatly help cooling.

◆IC itself has power balancing function. The circuit is simple and reliable.

◆Typical voltage detection for each cell. So each battery will be prevented over charged or over discharged.

Over current and short circuit protection function is very reliable.

Long time short circuit of the load won’t affect the PCB and the battery.

Temperature protection during charging and discharging.

◆Extreme low power consumption. The consumption of the whole device is less than 50uA.

◆PCB use high anti-corrosion, high water resistance, high impedance ESD conformal Coating