18650 Dual Slot USB Li-Ion Battery Charger with LED Indicator

$18.69 USD $23.44 USD

18650 Dual Slot USB Battery Charger with LED Charging Indicator

Keep your rechargeable lithium-ion batteries topped up and ready to go with this compact, smart dual-slot USB charger. Compatible with a wide range of cylindrical Li-Ion battery sizes, this charger handles two batteries simultaneously and independently — so you're never left waiting. The built-in LED indicator takes the guesswork out of charging: a red light signals charging in progress, and it switches to green once your batteries are fully charged.

Whether you power flashlights, vapes, cameras, or other devices that rely on 3.7V Li-Ion batteries, this charger is a reliable everyday essential. It's powered via standard USB, making it easy to plug into any USB wall adapter, power bank, or laptop — no proprietary plug required.

Made in Mainland China.

Key Features

Dual Independent Slots: Charge two batteries at the same time, each slot managed independently for optimal charging performance.
Universal USB Input: Powered by any standard USB source (DC 5V, 1–2A) — works with wall adapters, power banks, and PC ports.
LED Status Indicator: Red light during charging; turns green when fully charged — easy at-a-glance monitoring.
Wide Battery Compatibility: Supports 10440, 14500, 14650, 16340, 16650, 18350, 18500, and 18650 Li-Ion cells (3.7V).
Overvoltage Protection: Built-in protection circuit helps safeguard your batteries from overcharging.
CE & FCC Certified: Meets international safety and electromagnetic compliance standards.
Compact & Portable: Slim 90mm × 30mm × 122mm form factor fits easily in a drawer, bag, or on a desk.

Technical Specifications

Input: DC 5V, 1–2A (via USB)
Output: DC 4.2V, 1000mA per slot
Rated Power: 2–5W
Discharge Current: 650mA
Product Size: 90mm × 30mm × 122mm
Protection: Overvoltage protection
Certifications: CE, FCC
Connector: USB (no wall plug included)

Compatible Battery Models

10440 | 14500 | 14650 | 16340 | 16650 | 18350 | 18500 | 18650

What's in the Box

1× Dual Slot USB Battery Charger (USB connector only — no wall plug)

Frequently Asked Questions

Q: What battery sizes is this dual slot USB charger compatible with?

A: This charger is compatible with a wide range of cylindrical 3.7V Li-Ion batteries, including 10440, 14500, 14650, 16340, 16650, 18350, 18500, and 18650 cell sizes. It does not include batteries — only the charger unit.

Q: Does the 18650 charger come with a wall plug?

A: No — this charger features a USB connector and requires a standard USB power source (DC 5V, 1–2A) such as a USB wall adapter, power bank, or computer USB port. A wall plug is not included in the package.

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

A: The built-in LED indicator makes it simple: the light glows red during charging and automatically switches to green once the battery in that slot is fully charged. Each slot is monitored independently, so you'll get an accurate reading for each battery.

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

A: Yes! Each of the two slots operates independently, which means you can charge two different compatible battery sizes simultaneously without any interference between them.

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.