18650 Battery Charger – 1/2/4 Slot Smart Lithium Charger

18650 Lithium Battery Charger – Smart 1, 2 & 4 Slot Charging

Keep your rechargeable lithium batteries topped up and ready to go with this versatile 18650 Battery Charger. Available in 1, 2, or 4-slot configurations, this intelligent charger works with a wide range of cylindrical lithium cells — perfect for flashlights, cameras, vapes, radios, and more. With universal AC input (110–240V, 50/60Hz), it works in homes and on travels around the world.

Key Features

• Universal AC Input: Compatible with AC 110–240V, 50/60Hz — works in any country with the appropriate plug adapter.
• Wide Battery Compatibility: Supports 10440, 14500, 14650, 16340, 16650, 18350, 18500, and 18650 rechargeable lithium cells.
• Independent Slot Charging: Each slot charges independently — no cross-interference, so you can mix different batteries safely.
• Smart Auto Cut-Off: Automatically stops charging at 4.23V cut-off voltage — prevents overcharging and extends battery life.
• Two-Color LED Indicator: Red light during charging, green light when fully charged — easy at-a-glance status monitoring.
• Output: DC 4.2V / 600mA per slot for safe, steady charging.
• Sleek Black Design: Compact, lightweight, and easy to store or travel with.
• Note: Batteries are NOT included.

Specifications

• Input Voltage: AC 110–240V, 50/60Hz
• Output Voltage: DC 4.2V / 600mA per slot
• Charging Cut-Off Voltage: 4.23V
• Slot Options: 1, 2, or 4 slots
• Indicator: Red (charging) / Green (full)
• Output Power: ≤37.5W
• Color: Black
• Compatible Batteries: 10440, 14500, 14650, 16340, 16650, 18350, 18500, 18650
• Country of Origin: Made in China

What's in the Box

• 1x 18650 Battery Charger (1, 2, or 4 slot — as selected)
• Batteries NOT included

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Battery Safety Resource

For guidance on the safe use and handling of lithium batteries, visit the U.S. Consumer Product Safety Commission (CPSC) – Battery Safety.

Learn more: Battery charger

Frequently Asked Questions

Q: Is this 18650 battery charger compatible with batteries other than 18650?

A: Yes! This smart charger is compatible with a wide range of cylindrical lithium batteries including 10440, 14500, 14650, 16340, 16650, 18350, 18500, and 18650 cells. Each slot operates independently so you can charge different battery types simultaneously without interference.

Q: Will this charger work in my country?

A: This charger supports universal AC input of 110–240V at 50/60Hz, making it compatible with power outlets in most countries worldwide. You may need a plug adapter for your specific country's socket type.

Q: Does this charger prevent overcharging?

A: Yes. The charger features a smart auto cut-off at 4.23V. Once any battery in a slot reaches full charge, the charger automatically stops, protecting your batteries from overcharging and helping extend their overall lifespan.

Q: Are batteries included with this charger?

A: No, batteries are not included. This listing is for the charger unit only (available in 1, 2, or 4-slot configurations). You will need to supply your own compatible rechargeable lithium batteries.

Q: How do I know when my batteries are fully charged?

A: The two-color LED indicator makes it easy — the light glows red while charging and switches to green when the battery is fully charged and the charger has automatically stopped.