Nitecore UI1 Portable USB Li-ion Battery Charger

A compact, lightweight single-slot USB charger designed to safely power 3.7V Li-ion and IMR batteries on the go.

• Smart Charging Modes: Automatically detects battery voltage—delivering max charging current (800mA) for normal batteries (>2.9V) and Low Current Mode (100mA) for over-discharged cells with protection circuits.

• 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: Micro-USB powered (compatible with power banks, USB adapters, solar panels, or computers). Exceptionally slim and lightweight for easy travel.

Technical Specifications

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

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

• Dimensions: Length 4.82″ (122.5mm) x Width 1.15″ (29.2mm) x Height 1.26″ (32mm)

• Weight: 1.43 oz (40.5g)

What’s in the Box

• UI1 Battery Charger

• USB Charging Cable

• User Manual