18650 Battery Charger – 1/2/4 Slot Smart Li-ion Charger

18650 Lithium Battery Charger – Smart 4-Slot Charging for Multiple Li-ion Sizes

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 battery sizes and automatically stops charging once full — so you never have to worry about overcharging.

Key Features

• Universal AC Input: Compatible with AC 110–240V, 50/60Hz — works worldwide with a suitable plug adapter.
• Smart Auto Cut-Off: Charging automatically stops at 4.23V cut-off voltage, protecting your batteries from overcharge damage.
• 4-Slot Independent Charging: Each slot charges independently with zero interference — charge up to 4 batteries simultaneously.
• Two-Color LED Indicator: Red light = charging in progress; Green light = fully charged. Easy to read at a glance.
• Wide Battery Compatibility: Supports 10440, 14500, 16340, 16650, 14650, 18350, 18500, and 18650 lithium batteries.
• Compact Design: Measures just 125 × 92 × 30mm — great for home, office, or travel use.
• Output: DC 4.2V / 600mA per slot for safe, steady charging.

Specifications

• Input Voltage: AC 110–240V, 50/60Hz
• Output Voltage: DC 4.2V, 600mA
• Charging Cut-Off Voltage: 4.23V
• Slots Available: 1 / 2 / 4
• Indicator Light: Red (charging) / Green (full)
• Dimensions: 125 × 92 × 30mm
• Compatible Batteries: 10440, 14500, 16340, 16650, 14650, 18350, 18500, 18650
• Country of Origin: Made in China

Note: Batteries are not included. This charger is for lithium-ion (Li-ion) batteries only.

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For safety guidance on handling and storing lithium-ion batteries, refer to the U.S. Consumer Product Safety Commission – Lithium Battery Safety.

Learn more: Battery charger

Frequently Asked Questions

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

A: Yes! This charger supports a wide range of cylindrical lithium battery sizes including 10440, 14500, 16340, 16650, 14650, 18350, 18500, and of course 18650 batteries, making it highly versatile for multi-device households.

Q: Can I use this charger in countries with 220V power outlets?

A: Absolutely. The charger accepts AC 110–240V input at 50/60Hz, making it compatible with both North American (110V) and European/international (220V) power supplies. Just ensure you use the correct plug adapter for your region.

Q: Will the charger damage my batteries if I leave them in overnight?

A: No. This smart charger features an automatic cut-off at 4.23V — once a battery is fully charged, it stops automatically to prevent overcharging, keeping your batteries safe and extending their lifespan.

Q: Can I charge different battery sizes in the same unit at the same time?

A: Yes. Each slot operates independently with no interference between slots, so you can charge different compatible battery sizes simultaneously without any issues.