1/3/5PCS 3S 4S 5S BMS 100A Lithium Battery Protection Board Li-ion LiPo 12.6V 16.8V 21V Balance Charging Module

1/3/5PCS 3S 4S 5S BMS 100A Lithium Battery Protection Board Li-ion LiPo 12.6V 16.8V 21V Balance Charging Module

$40.68

$40.68 $0.00

Color 5S 21V 100A 3S 12V 100A 4S 12V 100A

Model Number 3PCS 1PCS 5PCS

Ships FromChina Mainland

Description

SPECIFICATIONS

Application: Computer

Brand Name: XYCJJCXL

Choice: yes

Condition: New

Dissipation Power: 100A

Functions: Electronic Module

High-concerned chemical: none

Operating Temperature: -40-+85

Origin: Mainland China

Package: SMD

Quantity: 1

Range of application: Switch And Sensor For Arduino STM

Supply Voltage: 12V 16.8V 18V 21V

Type: Module

semi_Choice: yes

🔋 Product Overview — QS-B305ABL-50A Lithium Battery Protection Board

Product Structure: Lithium battery protection board
Application Range: LiFePO4, Ternary Li-ion (NMC/NCA), Lithium Cobalt Oxide (LCO), Lithium Manganese Oxide (LMO) packs

⚙️ Model Highlights

Designed for 3S / 4S / 5S packs; common version can be configured per actual needs
Mature protection circuit with dedicated IC, supports wire-disconnection protection
Imported high-current, ultra-low RDS(on) MOSFETs (single MOS as low as ~3 mΩ)

🛡️ Core Protections

Complete and stable charge and discharge protection logic
Overcharge, overdischarge, overcurrent, short-circuit, and disconnection handling
Designed to enhance pack reliability in daily use

⚡ Power Path & Components

High-current MOS array helps reduce conduction losses
Topology optimized for stable charging/discharging performance

🧮 Cell Balancing

Hardware balancing for cells
Balanced current set appropriately; heat distribution is reasonable
Balancing is designed not to impair overall pack performance

✅ Supported chemistries: LiFePO4, NMC/NCA, LCO, LMO (configure 3S/4S/5S as required)

Note: Actual configuration depends on the required series count and component selection in the common version. Ensure cell consistency and correct wiring before operation.

⚡ Functional Features — Flexible Setup & High Power Design

🔄 Flexible Series Configuration

Users can freely configure 3S / 4S / 5S setups.
By default, the board will be shipped according to the customer’s selected series count.
Simply connect according to the matching wiring diagram — no modification required.
If another series configuration is needed, users can adjust it themselves by following the provided operation guide.

⚙️ Same-Port & Split-Port Compatible

This protection board uses 15 high-power ultra-low resistance MOSFETs (8 for discharge, 7 for charge).

Same-Port Mode: Discharge 60A / Charge 60A
Split-Port Mode: Discharge 80A / Charge 60A

✅ Absolutely different from the low-power MOS solutions on the market.
Each MOS has an internal resistance as low as ~3 mΩ, ensuring superior efficiency and heat control.

⚡Technical Parameters

LiFePO4 Protection Board Parameters (3.6V / 3.7V)

Protection Project	Min	Typ	Max	Unit
Overcharge Voltage	3.61	3.65	3.69	V
Overcharge Recovery Voltage	3.5	3.55	3.6	V
Overcharge Protection Delay	500	1000	1500	mS
Overdischarge Voltage	2.27	2.35	2.43	V
Overdischarge Recovery Voltage	2.45	2.55	2.65	V
Overdischarge Protection Delay	500	1000	1500	mS
Overdischarge Protection Current		100		A
Split Discharge Current (Continuous)		50	80	A
Same Port Discharge Current (Cont.)		40	60	A
Overdischarge Protection Delay	100	200	300	mS
Overcharge Protection Current		100		A
Charging Current (Continuous)		40	60	A
Overcharge Current Protection Delay	10	20	30	mS
Quiescent Current		17	25	μA
Temperature Protection		With temperature control interface
Disconnection Protection		Yes
Short Circuit Protection		Yes
Short Circuit Delay	100	300	600	μS
Over Current Protection Recovery Mode		Disconnect load release
Balance Function		Yes
Equalizing Voltage		3.405		V
Equalizing Current		60		mA
Fuselage Size		62×42×4		mm
Body Color		White (PCB)
Fuselage Weight		17		g
Standard Accessories		Circuit board
Standard Packaging		Electrostatic bag
Wire Specification		None
Conductor Length		None		cm
Working Temperature		-20℃~+65℃		℃
Storage Temperature		-40℃~+85℃		℃

Polymer / Ternary Lithium / Lithium Manganese Oxide Protection Board Parameters (3.6V / 3.7V)

Protection Project	Min	Typ	Max	Unit
Overcharge Voltage	4.21	4.25	4.29	V
Overcharge Recovery Voltage	4.14	4.19	4.24	V
Overcharge Protection Delay	500	1000	1500	mS
Overdischarge Voltage	2.72	2.8	2.88	V
Overdischarge Recovery Voltage	2.9	3.0	3.1	V
Overdischarge Protection Delay	500	1000	1500	mS
Overdischarge Protection Current		100		A
Split Discharge Current (Continuous)		50	80	A
Same Port Discharge Current (Cont.)		40	60	A
Overdischarge Protection Delay	100	200	300	mS
Overcharge Protection Current		100		A
Charging Current (Continuous)		40	60	A
Overcharge Current Protection Delay	10	20	30	mS
Quiescent Current		17	25	μA
Temperature Protection		With temperature control interface
Disconnection Protection		Yes
Short Circuit Protection		Yes
Short Circuit Delay	100	300	600	μS
Over Current Protection Recovery Mode		Disconnect load release
Balance Function		Yes
Equalizing Voltage		4.18		V
Equalizing Current		60		mA
Fuselage Size		62×42×4		mm
Body Color		White (PCB)
Fuselage Weight		17		g
Standard Accessories		Circuit board
Standard Packaging		Electrostatic bag
Wire Specification		None
Conductor Length		None		cm
Working Temperature		-20℃ ~ +65℃		℃
Storage Temperature		-40℃ ~ +85℃		℃

⚙️ OPERATION GUIDE

Practical Operation Guide

🔋 Output Current: Split Port 80A | Same Port 60A

⚠️ Note: Lithium batteries must be charged with a dedicated lithium battery charger.
Do not use a lead-acid battery charger. Charging with a lead-acid charger may generate
high voltage that breaks down the MOS tubes of the protection board, causing the protection
board to fail in overcharge protection.

📘 (1) 3S Split-Port Wiring Method

(Refer to the 3S split-port wiring diagram)

Connect 3 battery packs in series according to the wiring method of the 3S split-port wiring diagram.
Connect the charger negative terminal to C- of the protection board, and the load negative terminal to P-.
Connect the charger positive terminal and the load positive terminal to the positive terminal of the 3S battery pack.
Use 3 wires to connect the positive terminals of the 3 battery packs in sequence to B+, B4, and B3.
Connect the negative terminal of the 3S battery pack to B-. Short-circuit B1, B2, and B-.
After all wires are connected according to the diagram, carefully check to ensure correctness. Confirm everything is correct before starting use.
During use, when the indicator light on the protection board is ON, it means the corresponding battery group is in balancing working state (i.e., the battery voltages are unbalanced).

📘 (2) 3S Same-Port Wiring Method

(Refer to the 3S same-port wiring diagram)

Connect 3 battery packs in series according to the wiring method of the 3S same-port wiring diagram.
Connect the charger negative terminal and the load negative terminal to C-. Keep P- unconnected.
Connect the charger positive terminal and the load positive terminal to the positive terminal of the 3S battery pack.
Use 3 wires to connect the positive terminals of the 3 battery packs in sequence to B+, B4, and B3.
Connect the negative terminal of the 3S battery pack to B-. Short-circuit B1, B2, and B-.
After all wires are connected according to the diagram, carefully check to ensure correctness. Confirm everything is correct before starting use.
During use, when the indicator light on the protection board is ON, it means the corresponding battery group is in balancing working state (i.e., the battery voltages are unbalanced).

📘 (3) 4S & 5S Wiring Methods

The wiring methods for 4S same-port / split-port and 5S same-port / split-port are similar to the 3S wiring methods. Please refer to the corresponding wiring diagrams.