High-Efficiency Li-Ion Battery Charger, 21V 2A Output - US (DC3)

🧩 Product Overview: The 21V 2A Li-ion battery charger is specifically designed for charging 18V to 18.5V battery packs, including 5S 18650 configurations. This robust charger ensures efficient and safe charging of lithium batteries, making it an essential accessory for your battery management needs.

Specifications:

• Input Voltage: AC 100-240V, 50/60HZ, 0.8A
• Charging Voltage: DC 21V
• Charging Current: 2A
• Charging Mode: Constant Current - Constant Voltage (CC-CV)
• Charger Port: DC 5.5 x 2.1/2.5
• Dimensions: 94 x 47 x 33 mm

🔍 Visual Indicators: The charger features a dual-color charge indicator that provides clear visual feedback during the charging process: a red light indicates active charging, while a green light signifies that the battery is fully charged.

🧩 Safety Features: Safety is paramount with this charger, which includes multiple protective functions to ensure the longevity and reliability of both the charger and the batteries:

• Input Over-current Protection: The charger automatically disconnects if the input current exceeds 2A, protecting the internal circuitry from potential fire hazards and other risks.
• Output Current Limitation: The design limits the charging current to safeguard battery safety and prolong battery life, optimizing performance.
• Short-circuit Protection: In the event of improper usage, the output current is limited to 200mA or less, preventing potential damage and ensuring user safety.

🧩 Application: This charger is ideal for lithium-ion batteries and lithium polymer batteries with a nominal voltage of 18-21V. It serves as a versatile and reliable solution for powering various devices and applications that utilize these battery types.