Product Overview
Keep all your high-drain devices powered up and ready to go with this Universal Smart USB Lithium-Ion Battery Charger. Designed for maximum versatility and safety, this compact charging hub features independent slot monitoring, intelligent full-charge detection, and universal USB power compatibility. Whether you need a 1-slot, 2-slot, or 4-slot setup, this charger delivers reliable, controlled power to your rechargeable Li-ion cells.
Key Features
Intelligent Auto-Cutoff: Built-in smart circuitry monitors battery status and stops charging automatically once full capacity is reached to prevent overcharging.
LED Status Indicators: Features clear visual LED lights for every individual slot—glowing RED while actively charging and switching to GREEN when fully charged.
Universal USB Powered Convenience: Plugs into any standard 5V USB source, including wall adapters, power banks, laptops, or car chargers, for convenient power on the go.
Multi-Battery Compatibility: Accurately charges a wide array of popular 3.7V Li-ion button-top and flat-top cells, reducing clutter from multiple dedicated chargers.
Compact & Travel-Ready: Light, durable design makes it easy to pack into gear bags for tactical lights, vapes, flashlights, or power tool setups.
Specifications
Input Power: Standard USB (DC 5V)
Output Current: DC 4.2V / 600mA
Battery Chemistry Supported: 3.7V Rechargeable Lithium-Ion (Li-ion)
Dimensions: 125mm x 92mm x 30mm
Certifications: CE & FCC Compliant
Included in Package: 1x USB Smart Charger (Batteries Not Included)
Usage Instructions
Connect Power: Plug the charger cable into any active 5V USB power outlet (LEDs will illuminate green).
Insert Batteries: Align your 3.7V rechargeable Li-ion batteries according to the positive (+) and negative (-) polarity markings in the slots.
Monitor Charging: The LED light for the occupied slot will turn RED to indicate active charging.
Completion: Once the LED changes to GREEN, your battery is fully charged and ready for use.
Safety & Care Instructions
Check Chemistry: Only insert 3.7V Li-ion batteries. Do NOT attempt to charge alkaline, Ni-MH, Ni-Cd, or non-rechargeable cells.
Avoid Overheating: Keep the charger on a flat, well-ventilated surface during operation away from flammable materials.
Dry Environment: Do not expose the charging unit to water, direct rain, high humidity, or extreme heat.
Unplug When Idle: Always disconnect the charger from the USB power source when not actively charging batteries.
