NITECORE UI1 SINGLE USB CHARGER

Nitecore UI1 Single-Slot USB Battery Charger for Li-ion, IMR Batteries

The Nitecore UI1 is a highly portable, lightweight single-slot battery charger engineered for outdoor enthusiasts, travelers, and everyday users. Despite its compact footprint, the UI1 features an elongated charging slot that easily accommodates large-sized cells like protected 20700 and 21700 batteries. Powered entirely via USB, it automatically adopts the optimal charging mode—Constant Current (CC) or Constant Voltage (CV)—to maximize your battery health and cycle life.

Features

Input: DC 5V/1A 5W

Output:

• Voltage: 4.2V ±1%
• Current: 800mA (MAX)

Compatible chemistries:

• Li-ion, IMR: 10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14350, 14430, 14500, 14650, 16500, 16340(RCR123), 16650, 17350, 17500, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 22500, 22650, 25500, 26500, 26650.
• Intelligent and active charging technology (CC and CV optimization)
• Low current activation for deeply discharged batteries under 2.9V
• Three blue power indicators for real-time battery levels
• Universal USB power input (power banks, solar panels, adapters)
• Reverse polarity protection & short circuit prevention
• Intelligent thermal regulation to prevent overheating
• PC fire retardant materials
• Ultra-lightweight and travel-friendly design

Note: The UI1 is designed exclusively for 3.6V/3.7V Li-ion and IMR batteries. It is not compatible with Ni-MH or Ni-Cd batteries (AA, AAA, C, D).