Nitecore UI2 Portable Dual-Slot USB Li-ion Battery Charger

A lightweight, portable dual-slot USB charger designed to safely and efficiently power a wide variety of 3.7V Li-ion and IMR batteries.

• Dual-Slot Independent Charging: Charges two batteries simultaneously with independent control, delivering a max current of 800mA per slot.

• Smart Charging Modes: Automatically detects battery voltage—activating Standard Mode for normal batteries (>2.9V) and Low Current Mode (100mA) for over-discharged batteries.

• Comprehensive Safety Safeguards: Features reverse polarity protection, anti-short-circuit protection, automatic charging termination, and intelligent thermal protection to prevent overheating.

• Highly Portable & USB-Powered: Powered via Micro-USB (compatible with power banks, USB adapters, or computers). Lightweight and compact for easy travel.

Technical Specifications

• Input: DC 5V / 2A (10W) | Output: 4.2V $\pm$ 1% (800mA x 2 Max)

• Compatible Battery Sizes: Wide compatibility including 18650, 21700, 16340 (RCR123A), 14500, 26650, and many more 3.7V Li-ion/IMR cells.

• Dimensions: Length 4.94″ (125.5mm) x Width 2.34″ (59.5mm) x Height 1.26″ (32.1mm)

• Weight: 2.8 oz (79.5g)

What’s in the Box

• UI2 Battery Charger

• USB Charging Cable

• User Manual