Factory Price Battery Management System 14.8V 4s 100A LiFePO4 Batery BMS for Lead Acid Replacement

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Product Description

📋 Basic Information
Model NO.
LWS-4S100A-972
Overcharge Detection
4.25V±0.025V
Balance Function
Yes
Usage
Lithium Battery Packs, LiFePO4
Application
Digital Equipment, Ebike, Solar
Metal Coating
Copper
Production Mode
SMT
Base Material
Fr-4
Certification
RS485, Can, Bluetooth
Testing Service
100% E-Testing
Product Parameters

This protection solution for LiFePo battery packs of 4 cells in series supports very stable loads with continuous current up to 100A.

Key Features
1
Provides comprehensive protection for 4 series LiFePo battery packs.
2
Protections for both charging and discharging processes.
3
Smart cell balancing with adjustable current via external components.
4
Internal circuit handling for over-current and short-circuit events.
5
Circuit protection against damage from overload or electrical shorts.
6
Full support for RS485 and Bluetooth protocols.
7
Integrated low-temperature heating support.
📷 Product Gallery
📝 Technical Specifications
Category Test Item Standard
VoltageCharging voltageDC: 16.8V CC/CV
VoltageSingle cell balancing4.125±0.025V
CurrentBalancing current84±10mA
CurrentSelf-consumption≤50uA
CurrentMax Continuous Discharge100A
OverchargeDetection Voltage4.25V±0.025V
OverdischargeDetection Voltage2.8V±0.0625V
OvercurrentDischarge Detection330±50A
ResistanceInternal Resistance≤20mΩ
TemperatureOperating Range-20 ~ +60ºC

Options available: Electric Switch, Temperature Switch, Active Balance, UART/BT/RS485/CAN communication, and LCD display.

🚀 Production Advantages
🏭 Manufacturing Capabilities

Founded in 2013, the manufacturer provides Battery PCM & BMS for Lithium-ion, LiFePo4, and LTO battery packs, along with ODM & OEM services. With over 900 types of hardware and software BMS designs (including HDQ, I2C, SMBUS, RS485, RS232 & Bluetooth), production covers 1S-35S series with currents up to 350A.

Detailed Production Process
Frequently Asked Questions
How do I judge what material my battery is?
Please check the battery body. If the normal voltage shows as 3.2V, the battery is LiFePo4. If it shows 3.6V or 3.7V, it is a Li-ion or Li-polymer battery.
How is product quality guaranteed?
We ensure quality through a pre-production sample before mass production and a mandatory final inspection before every shipment.
What products can I purchase from you?
We offer Battery Pack BMS, LiFePo4/Lithium Ion PCM, Protection Circuit Boards, Printed Circuit Boards, and complete Battery Packs.
Why should I choose your products over other suppliers?
We utilize advanced production equipment, maintain a scientific quality management system, and prioritize environmental and quality philosophies in our hundreds-strong workforce.
What delivery and payment terms are accepted?
We accept FOB and EXW delivery terms. Payments can be made via T/T, PayPal, Western Union, or Cash in USD or CNY.
Can products be customized to specific requirements?
Yes, all items can be customized. Simply provide your relative voltage, cell count, current requirements, or equipment type, and we will recommend the most suitable product.

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