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

OLPAY 18650 Lithium Battery Charger – 1, 2, or 4 Slot USB Charging

Keep your rechargeable lithium batteries topped up and ready to go with the OLPAY Multi-Slot 18650 Battery Charger. Available in 1, 2, or 4-slot configurations, this compact and reliable USB charger is designed to handle a wide range of cylindrical lithium-ion battery sizes — making it an essential accessory for flashlights, cameras, vapes, power tools, and more.

Made in Mainland China.

Key Features

• Multiple Slot Options: Choose 1, 2, or 4-slot versions to suit your charging needs.
• Wide Battery Compatibility: Supports 10440, 14500, 14650, 16340, 16650, 18350, 18500, and 18650 lithium batteries.
• Dual Output Voltage: DC 4.2V / 1000mA and DC 3.7V / 500mA — charges both 4.2V and 3.7V batteries accurately.
• LED Charging Indicator: Red light during charging; green light when fully charged — no guesswork involved.
• USB Powered: Convenient DC power input; compatible with standard USB power adapters and power banks.
• Compact & Portable: Lightweight design fits easily in a bag, drawer, or travel kit.
• Low Output Current (0.5A): Gentle charging helps preserve battery life over time.

Specifications

What's in the Box

• 1 x Battery Charger (batteries not included)

Looking for more handy tools and gadgets? Check out our 1/2" Drive 8-Piece Hex Short Socket Set – Vanadium Steel or browse our 10-Piece Gardening Tool Kit – Iron Head & Plastic Handle for more practical everyday essentials.

Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What battery sizes is the 18650 lithium battery charger compatible with?

A: This charger is compatible with a wide range of cylindrical lithium batteries, including 10440, 14500, 14650, 16340, 16650, 18350, 18500, and 18650 sizes. It supports both 4.2V and 3.7V battery types.

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

A: The built-in LED indicator makes it easy — the light glows red while your batteries are charging and switches to green once they are fully charged.

Q: Does this charger come with batteries?

A: No, batteries are not included. The package contains only the battery charger unit. Please purchase compatible 18650 or other supported lithium batteries separately.

Q: What power source does this charger use?

A: The charger uses a DC (USB) power input, making it compatible with standard USB wall adapters, laptop USB ports, and power banks for convenient charging anywhere.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.