The Dual Charger for 18650 Rechargeable Li-Ion Batteries is an AC-powered charging adapter designed to safely charge two 18650 lithium-ion cells simultaneously. It plugs directly into an AC mains outlet and provides regulated charging without requiring any external power supply, making it simple, portable, and convenient for everyday use.
Core Charger Specifications
• Battery Type: 18650 Li-Ion rechargeable cells
• Charging Slots: Dual (2 batteries simultaneously)
• Charging Method: Constant Current / Constant Voltage (CC/CV)
• Power Source: AC mains powered charger
Electrical & Interface
• Input Voltage: AC 220–240 V (region dependent)
• Output Voltage per Cell: 4.2 V (regulated)
• Charging Current: ~0.5 A – 1 A per slot (charger dependent)
• Plug Type: 2-pin AC plug
• Battery Interface: Spring-loaded 18650 holders
Performance Characteristics
• Independent charging of both battery slots
• Automatic charge cut-off at full charge
• Stable and safe charging operation
• Suitable for daily battery charging use
Physical Characteristics
• Charger Type: Desktop / wall-powered adapter charger
• Body Material: Heat-resistant plastic housing
• Slot Design: Two dedicated 18650 battery bays
• Compact and lightweight construction
Compatibility
• 18650 Li-Ion rechargeable batteries
• Flat-top and button-top cells
• DIY electronics and hobby battery use
• Flashlights and battery-powered devices
Key Advantages
• No external power supply required
• Simple plug-and-play operation
• Charges two batteries at the same time
• Compact and portable design
Technical Insights
• Designed only for Li-Ion 18650 cells
• Not suitable for LiFePO₄ or NiMH batteries
• Charging time depends on battery capacity
• Do not mix batteries of different condition or capacity
Applications
• Charging 18650 batteries
• DIY electronics projects
• Flashlights and portable devices
• Hobby and maker battery usage
• Backup battery maintenance
Pro Tip
• Insert batteries with correct polarity
• Avoid charging damaged or swollen cells
• Remove batteries once fully charged for longer lifespan
• Use only in dry, well-ventilated areas
Package Includes
• 1 × Dual 18650 Battery Charger (AC Adapter Type)