Multi-Slot Smart USB Lithium Battery Charger | IC Protection

DAZZLEEX Multi-Slot Smart Lithium Battery Charger

Keep all your 3.7V lithium batteries powered up safely and efficiently with the DAZZLEEX Multi-Slot Smart USB Battery Charger. Featuring intelligent IC control, automatic shut-off, and anti-reverse connection protection, this charger is engineered for worry-free charging of a wide range of cylindrical lithium battery sizes. Made in Mainland China.

Key Features

• USB-Powered Convenience: Charges via standard USB cable (included, ~60 cm length). Compatible with phone chargers, power banks, laptops, and more — no proprietary adapter required.
• Universal Telescopic Spring Slots: Each slot features a retractable spring-loaded negative pole, accommodating a wide variety of lithium battery sizes including 21700, 18650, 18490, 18500, 18350, 16650, 16340, 14650, 14500, 10440, 26650, and 26700.
• Intelligent IC Smart Charging: Advanced IC chip automatically manages the charge cycle and cuts off power when batteries reach full capacity — no overcharging, no guesswork.
• Multi-Layer Safety Protection: Built-in output short-circuit protection and anti-reverse battery connection protection keep both your batteries and your devices safe throughout the charging process.
• Clear LED Status Indicators: Red light = charging in progress; Green light = fully charged or no battery loaded. At-a-glance monitoring made simple.
• Premium ABS Housing: Constructed from high-quality, brand-new ABS material for durability and heat resistance during extended charging sessions.

Specifications

Ideal Applications

This charger is perfectly suited for powering batteries used in digital home appliances, beauty care devices, small portable fans, flashlights, intelligent thermometers, and other electronics that rely on single 3.7V lithium batteries.

What's in the Box

• 1 × DAZZLEEX Multi-Slot Smart Lithium Battery Charger
• 1 × USB Charging Cable (~60 cm)

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Note: Due to variations in monitor settings and lighting, actual product color may differ slightly from images. Please allow ±3 mm tolerance due to manual measurement.

Learn more: ENERGY STAR product efficiency guidance

Frequently Asked Questions

Q: What lithium battery sizes are compatible with this multi-slot charger?

A: The DAZZLEEX multi-slot smart charger is compatible with a wide range of cylindrical 3.7V lithium battery formats, including 21700, 18650, 18500, 18490, 18350, 16650, 16340, 14650, 14500, 10440, 26650, and 26700. The telescopic spring-loaded slots adjust automatically to fit each size securely.

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

A: The built-in LED indicator makes it easy — the red light stays on while the battery is actively charging, and switches to a solid green light once the battery is fully charged or when no battery is loaded. The intelligent IC also automatically stops charging at full capacity to prevent overcharging.

Q: Can I use this charger with a standard phone charger or power bank?

A: Yes! The charger connects via USB (DC 5V – 2A input), making it compatible with most standard USB phone chargers, power banks, laptops, and USB wall adapters. The included ~60 cm USB cable is all you need to get started.

Q: Is it safe to leave batteries in the charger after they are fully charged?

A: The intelligent IC protection system automatically halts charging once batteries reach full voltage (DC 4.17V–4.2V), so the risk of overcharging is minimized. Additionally, short-circuit and anti-reverse connection protections are built in for added safety.

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.