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Universal USB Charger for 18650 26650 14500 Lithium Batteries
Universal USB Charger for 18650 26650 14500 Lithium Batteries
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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.
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For general battery safety guidelines, visit the U.S. Consumer Product Safety Commission – Battery Safety.
Learn more: Battery charger
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.
