The 2-Slot Fast Battery Charger paired with 2 x 18650 3.6 Volt Li-Ion Batteries offers a convenient and efficient charging solution for various lithium-ion batteries. 

Fast Battery Charger:

Input Compatibility: Supports DC 5V/2A input via Micro USB, ensuring compatibility with a wide range of power sources.
Output Flexibility: Offers versatile output options for Li-ion and NiMH batteries, including 12A/1A/0.5A and 21A/0.5A, catering to different charging needs.
USB Output: Provides a USB output of 5V1A, allowing the charger to function as a power bank after fully charging the batteries, enabling convenient charging of mobile phones and other devices.
LCD Screen: Equipped with a large LCD screen that displays charging status and battery information, offering clear and intuitive operation.
Protection Features: Incorporates multiple protection mechanisms such as reverse connection protection, short circuit protection, and over-voltage protection, ensuring safe and reliable charging.
Compact Design: Designed with compact dimensions of 131mm x 68.2mm x 38.8mm and lightweight construction weighing 109g (without batteries), facilitating easy portability and storage.
Charge Time: Offers a quick charge time of approximately two hours, ensuring minimal downtime between charges.

18650 3.6 Volt Li-Ion Batteries:

Nominal Voltage: Each battery has a nominal voltage of 3.7V, making them compatible with devices designed for this voltage range.
Battery Size: Designed in a cylindrical shape to fit devices that accommodate 18650 batteries, ensuring compatibility with a wide range of electronic devices.
Capacity: Each battery boasts a high capacity of 2000mAh, providing ample power for extended usage durations before requiring recharging.
Chemistry: Utilizes Lithium Ion (Li-Ion) chemistry, known for its high energy density, lightweight construction, and long-lasting performance.
Terminal Type: Equipped with button top terminals, ensuring secure and reliable connections in compatible devices.
Dimensions: Each battery measures approximately 70 mm in length and 18.3 mm in diameter, offering a compact yet powerful power source for electronic devices.
Weight: Weighing only 45g (1.64 Oz) per battery, they offer a lightweight and portable power solution for on-the-go use.
Key Features: Exhibit no memory effect, ensuring consistent performance over repeated charge cycles. Additionally, these batteries boast a long storage life, making them ideal for backup power solutions.

The 2-Slot Fast Battery Charger paired with 2 x 18650 3.6 Volt Li-Ion Batteries offers a reliable, versatile, and user-friendly charging solution for various lithium-ion batteries, suitable for both everyday use and travel.