Universal USB Single Slot Lithium Battery Charger

Keep your rechargeable lithium batteries topped up and ready to go with this compact, intelligent single-slot USB charger from Fanmuran. Compatible with a wide range of cylindrical lithium-ion and Ni-MH battery sizes, it's the perfect everyday charging solution for flashlights, vapes, radios, remote controls, and more.

Key Features

Wide Compatibility: Supports 3.7–4.2V lithium batteries including 18650, 16650, 14500, 10440, 26650, and other standard cylindrical cells.
LED Status Indicator: Red light = charging in progress; Green light = fully charged — no guesswork needed.
Auto Trickle Mode: Automatically switches to low-current trickle charging when the battery is full, helping to extend overall battery lifespan.
Universal USB Input: Charges via any standard USB port — compatible with computers, power banks, wall adapters, and phone chargers (DC 5V / 1A–2A).
Smart IC Protection: Built-in intelligent IC chip provides short circuit protection and reverse polarity protection for safe, worry-free charging.
High-Quality Build: Made from flame-retardant, high-temperature-resistant ABS material for added durability and safety during use.
Spring-Loaded Compartment: High-elasticity battery bay firmly holds various battery lengths in place for a secure connection every time.

Specifications

Material	ABS Plastic
Color	Black
Dimensions	4.02 × 0.87 × 1.06 in (10.2 × 2.2 × 2.7 cm)
Cable Length	23.62 in / 60 cm
Input	DC 5V / 1A–2A
Output Voltage	4.2V
Output Current	500 mA
Charging Time	Approx. 2–3 hours
Battery Types Supported	3.7–4.2V Li-ion / Ni-MH (18650, 26650, 16650, 14500, 10440 and similar)

What's in the Box

1× Universal Lithium Battery USB Charger

Made in Mainland China. Shipped safely in protective bubble bag packaging — no retail box included.

Note: Please allow ±1–2 cm variance due to manual measurement. Actual color may vary slightly from screen to screen due to monitor settings.

Frequently Asked Questions

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

A: This charger supports most standard cylindrical 3.7–4.2V lithium-ion batteries, including 18650, 26650, 16650, 14500, and 10440 cells. The spring-loaded bay accommodates a range of lengths and diameters.

Q: What USB power source do I need to use this charger?

A: The charger accepts a standard DC 5V / 1A–2A USB input, making it compatible with most wall adapters, computer USB ports, and power banks. A USB power adapter is not included but any standard 5V USB source will work.

Q: How do I know when my battery is fully charged?

A: The built-in LED indicator makes it easy — a red light shows the battery is actively charging, and the light turns green once the battery is fully charged. The charger then automatically switches to trickle mode to maintain battery health.

Q: Does this charger have any safety protections?

A: Yes. The charger features a smart IC control system with built-in short circuit protection and reverse polarity protection. The ABS housing is also made from flame-retardant, high-temperature-resistant material for added peace of mind.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.

We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.