0.95W 10A 20A 7.4V 8.4V Pcb Board Assembly 18650 Polymer Battery

Basic Information
Place of Origin: Guangdong, China
Brand Name: CANYI
Certification: RoHS
Model Number: CY-391/CY-392
Minimum Order Quantity: 1000pcs
Price: Negotiated
Packaging Details: Dimensions per Unit:19*6.3*21 centimeter • Weight per Unit:100g• Units per Export Carton:10000 • Export Carton Dimensions L/W/H: 42*33*24 centimeter• Export Carton Weight:3 Kilograms
Delivery Time: 10-15 days
Payment Terms: Telegraphic Transfer in Advance (Advance TT, T/T)
Supply Ability: 15,000,000PCS Per Day
Detail Information
Product Name: Pcb Board Assembly Self Consuming Current: 12-24uA
Equilibrium Start-up Voltage: 4.17-4.23V Balanced Current: 95-105mA
Overcurrent Protection Current: 19-25A Equilibrium Heating Power: 0.78-0.95W
Service: OEM Services Provided Ambient Temperature: -40~85℃
High Light:

8.4V Pcb Board Assembly


0.95W Pcb Board Assembly


18650 Polymer Battery BMS Board

Product Description

2S 10A 20A 7.4V 8.4V custom printed circuit board 18650 Polymer Lithium Battery Protection BMS Board



Standard version: Suitable for starting drills with currents up to 25A below 50W, or resistive loads below 168W.
Balanced version: Suitable for starting currents below 25A and below 50W power drills, or resistive loads below 168W, with balanced charging function.

Applicable scope: Suitable for lithium batteries with nominal voltage of 3.7V and full voltage of 4.2V (including 18650, 26650, polymer lithium batteries, without limitation on the dimensions) Product

Size: 45*15*3.4mm (Standard), 48*20*3.4mm (Balanced)

Charging voltage: 8.4V - 9.0V

Continuous discharge current (upper limit): 20A (If the cooling environment is not good, reduce the load current use)

Continuous charge current (upper limit): 10A

  1. The successful start of power drill requires two 10C-20C power batteries, or four 5C-10C power batteries.(recommended power battery models: SONY VTC4, VTC4A, VTC5A, VTC6);0V and 8.4V cable, use 2 square mm Above copper wire (cannot use nickel plate!!!)
  2. Note 2: When welding the battery for the first time, it needs to be charged before output; wiring strictly according to the figure
    0V, 4.2V. 8.4V, do not touch any components on the board when welding the wire, and do not intentionally short-circuit.
  3. When welding the battery for the first time or charging, as long as a single battery exceeds 4.2V, the "430" resistance will heat up and discharge (discharge to about 4.19V to stop heating). If the "430" resistor is seriously hot (you can't touch it when it is too hot), please check whether it is connected to the wrong wire.if the "430" resistance is also heating in the state of not charging, please check whether the wrong line is connected.
  4. Do not mix good batteries and bad batteries together! The capacity/internal resistance of 2 batteries should be as close as possible! (1 good battery + 1 bad battery = 2 battery use effect).

Electrical Parameters:

Items Minimum Typical Maximum Unit Remarks
Self consuming current 12 18 24 uA  
Overcharge protec tion voltage 4.2 4.25 4.3 V  
Equilibrium start-up voltage 4.17 4.2 4.23 V Balanced version
Balanced current 95 100 105 mA Balanced version
Equilibrium heating power 0.78 0.86 0.95 W Balanced version
Overcharge recovery voltage 4.1 4.15 4.2 V  
Over-discharge protection voltage A 2.4 2.5 2.6 V  
Back-up Voltage after Over-discharge Protection 2.8 3 3.2 V 1C discharge
Back-up Voltage after Over-discharge Protection 3.2 3.5 3.8 V 2C discharge
Over-discharge recovery voltage 2.5 2.6 2.7 V  
Conductive internal resistance 5 6 7  
Overcurrent protection current A 19 22 25 A Standard version
Overcurrent delay time 50 100 150 mS  
Continuous working current 0 20 20 A Resistive load
Continuous output power 0 168 168 W Resistive load
Ambient temperature -40 25 85




 0.95W 10A 20A 7.4V 8.4V Pcb Board Assembly 18650 Polymer Battery 0


In the discharge diagram, the batteries are in two strings, and the connected batteries must meet the 20A discharge current, which can be achieved by connecting batteries in parallel or purchasing batteries with high discharge current. For example, if the battery is 2000mAH and the discharge multiple is 10C, then only 2 strings and 2 parallels are needed, and the maximum current can reach the discharge current 40A. For stable discharge, 2 strings and 4 parallels are required, and attention should be paid to heat dissipation. The discharged battery capacity will drop rapidly.


Battery charging diagram, 2 strings of batteries, fully charged 8.4V. The charging power supply voltage is DC8.4~9V, the charging current depends on the current value set by the charging power supply and the battery power, and the maximum is not more than 10A.


Contact Details

Phone Number : 86-13423609933

WhatsApp : +8613423609933