Battery Charger for Lithium ion 18650 3.7V 4.2V Double Slot

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The 3.7V-4.2V Dual Slot Battery Charger is a specialized device for charging 18650 lithium-ion batteries, commonly used in various projects and flashlights. With dual slots enabling simultaneous charging, this charger prioritizes safety and efficiency, ensuring optimal performance and longevity of your lithium-ion batteries.



  • Universal Compatibility: Supports AC110v-240v 50-60Hz input, ensuring compatibility for international use.
  • Precision Charging: Provides a reliable DC 4.2V output for charging 18650 Li-ion batteries.
  • Intuitive LED Indication: LED indicators offer visual cues for monitoring the charging status, keeping you informed throughout the process.
  • Safety Assurance: Ensures low battery temperature rise, emphasizing the safety of lithium-ion batteries during charging.
  • Dual Slots Convenience: Designed with two slots to accommodate and charge two 18650 Li-ion batteries simultaneously, enhancing convenience.



  • Input: AC110v-240v 50-60Hz
  • Output: DC 4.2V
  • Battery Compatibility: 18650 lithium-ion batteries
  • Charging Slots: Dual slots for simultaneous charging



  • DIY Projects: Ideal for powering DIY electronics projects requiring 18650 lithium-ion batteries.
  • Flashlights: Perfect for charging batteries used in high-performance flashlights, ensuring uninterrupted illumination.
  • Portable Devices: Suitable for charging batteries in portable devices, such as power banks and handheld gadgets, enhancing their usability and longevity.


Package Includes:

  • 1x 3.7V-4.2V Dual Slot Battery Charger