Universal Adjustable Battery Charger for 18650 & All Sizes – Dual-Slot, Fast Charging, LED Indicator

Charge your rechargeable batteries quickly, safely, and conveniently with this Universal Adjustable Battery Charger designed to accommodate a wide range of cylindrical lithium-ion batteries including 18650, 26650, 14500, 16340, and more. Featuring an adjustable slot design, this charger easily fits various battery sizes, ensuring a secure and reliable charge every time.

Equipped with dual independent charging slots, it allows you to charge one or two batteries simultaneously, making it perfect for users with multiple devices. The charger uses a smart constant-current/constant-voltage charging method, providing optimal charging speed while protecting your batteries from overcharge, short circuit, and reverse polarity.

The built-in LED indicators clearly show the charging status — red light means charging in progress, and green indicates a full charge — so you always know when your batteries are ready to use. Its compact and lightweight design makes it ideal for home, office, or travel use.

Key Features:

• Adjustable Slots: Easily fits various battery sizes from 14500 to 26650, including 18650.
• Dual-Slot Charging: Charge one or two batteries simultaneously.
• Smart Charging Technology: Constant-current/constant-voltage charging ensures battery safety and longevity.
• LED Indicators: Red for charging, green for fully charged.
• Built-in Protection: Prevents overcharging, short circuit, and reverse polarity damage.
• Compact & Portable: Lightweight design for easy transport and storage.
• Wide Compatibility: Supports most Li-ion rechargeable batteries with 1.2V to 4.2V nominal voltage.

Whether you are powering flashlights, vaping devices, or other electronics, this charger offers a reliable and efficient solution to keep your batteries ready for use.