Li-ion / 18650 7.4V 2-Cells Battery Charger Protection PCB Board (up-to 3-Amps Peak Current)

This Li-ion / 18650 battery protection PCB protect a Li-ion / 18650 batteries with 3A continuous current. Protection is critical as a Lithium-ion batteries could explode when they are shorted circuit or overcharged, and damaged when they are over discharged.

Features

• Over charging - Disconnect circuit when either battery is over 4.35V
• Over discharging - Disconnect circuit when either battery is lower than 2.7V
• Short curcuit protection - Disconnect when short circuit is detected
• High-accuracy voltage detection circuit
• Built-in three-stage over-current detection circuit (over-current 1, over-current 2, or load short circuit)
• MOS transistor can control the battery charge and discharge
• Low standby current consumption

Specifications

• Charge voltage: 8.4V
• Protection IC: Seiko S-8254AAK
• Protection MOSFET: 4x AO4407A
• Supported Battery type: Two cell 4.2V Lithium-ion battery
• Overcharged voltage protection: 4.35V
• Over-discharged voltage protection: 2.7V
• Maximum Continuous Current: 3A
• Maximum Peak Current: 5A, <20ms
• Output Short-circuit protection: YES
• Internal resistance: <45mΩ
• Life cycle: more than 50000 hours 
• Operating temperature: -20 to 70 C
• Dimension: 36mm x 6mm x 1mm (LxWxH)

Package included

1x Lithium-ion battery protection PCB

Connections

B+ B-: The interface of battery core

B+: Battery V+ Positive
B- : Battery V- Negative

P+ P-: The connector of battery board

P+: Output / Charging V+
P- : Output / Charging V-

MB: The connection point between the batteries

 

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