Smart Li-ion Battery Charger 18650 26650 21700 – Adjustable Current

Alasicka Smart Li-ion Battery Charger – Universal Compatibility & Adjustable Current

Keep all your rechargeable Li-ion batteries topped up and ready with the Alasicka LM102B Smart Battery Charger. Engineered with intelligent charging technology, this compact charger automatically identifies your battery type and selects the optimal charge rate — so you never have to guess. With three selectable current settings and support for an impressive range of cylinder cell sizes, it's the only charger you'll ever need for your flashlights, power tools, vaping mods, and everyday devices.

Key Features

• Universal Compatibility: Supports 26700, 26650, 26500, 25500, 22700, 21700, 20700, 22650, 22500, 18700, 18650, 18500, 18490, 18350, 17650, 16650, 16340 (RCR123), 14650, 14500, and 10440 Li-ion batteries
• Adjustable Charging Current: Choose from 0.5A, 1.0A, or 2.0A to suit battery capacity and desired charge speed
• Smart Charging Technology: Automatically detects battery status and applies the safest, most efficient charge curve
• Quick Charge Capable: Get your batteries back to full capacity faster when you need them
• 1-Slot Independent Charging: Charges a single cell at a time with dedicated monitoring for consistent results
• Micro-USB Power Input: Conveniently powered via any standard Micro-USB cable — use a phone charger, power bank, or USB port
• Output Voltage: 3.7V – 4.2V to match standard Li-ion cell requirements
• CE Certified: Meets international safety and electromagnetic compliance standards
• Compact & Lightweight: Measures just 123 × 50 × 32 mm and weighs only 48g — ideal for home, travel, or on-the-go use
• Color: Black

Specifications

What's in the Box?

• 1 × Alasicka LM102B Smart Battery Charger
• Note: Batteries are NOT included.

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Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What battery sizes are compatible with this smart Li-ion battery charger?

A: This charger is compatible with a wide range of cylindrical Li-ion cells, including 18650, 26650, 21700, 20700, 18350, 16340 (RCR123), 14500, 10440, and many more. Please refer to the full compatibility list in the product specifications above to confirm your battery size is supported.

Q: How do I connect this charger to a power source?

A: The Alasicka LM102B uses a standard Micro-USB input, so you can power it using any Micro-USB cable connected to a USB wall adapter, laptop USB port, or portable power bank. The cable is not included, but any standard Micro-USB cable will work.

Q: Can I adjust the charging current, and why would I want to?

A: Yes — you can select between 0.5A, 1.0A, and 2.0A. Lower currents (0.5A) are gentler on smaller or older cells, helping extend their lifespan, while higher currents (2.0A) charge larger batteries more quickly when you're in a hurry.

Q: Are batteries included with this charger?

A: No, batteries are not included. The package contains only the LM102B battery charger unit. Please purchase compatible rechargeable Li-ion batteries separately.

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.