Product Description
Overview
The HX-3S-01 (also known as HX-3S-1) is a high-precision Battery Management System (BMS) designed for 3-cell (3S) Lithium-ion battery packs. This module acts as a vital safety controller, monitoring each cell’s voltage to prevent damage. Whether you are building a portable power bank, a solar-powered light, or a 12V backup for a WiFi router, this BMS ensures your 18650 cells operate safely and last significantly longer.
Key Features
4-Way Safety Protection: Integrated protection against Overcharge, Over-discharge, Over-current, and Short-circuits.
Automatic Recovery: Features a self-recovery delay that automatically restores power once a fault (like a short circuit) is removed.
Industrial Grade Components: Equipped with the Seiko S-8254AA protection chip and high-performance FDS 4435A MOSFETs.
Ultra-Low Power Consumption: Quiescent current is less than 6uA, preventing battery drain during long-term storage.
Compact Design: Slim 50mm profile makes it easy to integrate into tight battery enclosures and DIY project cases.
Applications in Pakistan
12V DIY Battery Packs: The standard choice for building 12V power sources for LED strips, DC fans, and small electronics.
Solar Energy Storage: Used widely in local solar street lamp repairs and renewable energy backups.
Handheld Device Repair: A common replacement BMS for massage guns, cordless tools, and portable sprayers.
Student Engineering Projects: Essential for university projects (FYP) involving battery management and power electronics.
Technical Specifications
| Feature | Specification |
| Model Number | HX-3S-01 / HX-3S-1 |
| Charging Voltage | 12.6V – 13.0V DC |
| Max Continuous Discharge | 5A – 8A (Maximum 10A) |
| Peak Instantaneous Current | 10A – 13A |
| Overcharge Voltage Range | 4.25V – 4.35V ± 0.05V |
| Over-discharge Voltage Range | 2.3V – 3.0V ± 0.05V |
| Internal Resistance | Less than 60mΩ |
| Dimensions | 50mm x 16mm x 1.0mm |
Technical Documentation: Official HX-3S-01 Datasheet (PDF)
Wiring Connection Guide
B-: Connect to the negative terminal of the first battery.
B1: Connect to the junction of the 1st and 2nd battery (3.7V).
B2: Connect to the junction of the 2nd and 3rd battery (7.4V).
B+: Connect to the positive terminal of the 3rd battery (11.1V).
P+ / P-: Power output (Load) and Charging input terminals.
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