The Nitecore UI1 is a compact, intelligent charger designed for one battery at a time. It is compatible with most Li-ion and IMR batteries on the market and automatically detects the inserted battery to apply the correct charging method. The UI1 selects the optimal charging voltage and stops charging once the battery is fully charged.
With a standard charging current of 1A, the UI1 also safely charges low-voltage batteries. When a battery below 2.9V is inserted, the charger automatically switches to a gentle 100mA charging current, preventing damage and extending battery life. Three built-in LED indicators display real-time charging progress.
Thanks to its Micro-USB input, the UI1 can be powered not only from wall adapters but also via a power bank or even a solar panel—making it a versatile choice for both indoor and outdoor use.
Compatible Batteries (Li-ion/IMR):
10340, 10350, 10440, 10500
12340, 12500, 12650
13450, 13500, 13650
14430, 14500, 14650
16500, 16340 (RCR123), 16650
17350, 17500, 17650, 17670
18350, 18490, 18500, 18650
20700, 21700, 22500, 22650, 25500, 26500, 26650
Technical Specifications:
Brand & Model: Nitecore UI1
Application: Li-ion/IMR battery charging
Dimensions: 122.5 × 29.2 × 32 mm
Weight: 40.5 g
Input: 5V/1A – 5W (DC) via Micro-USB
Output: 4.2V ±1% (max. 1000 mA)
Features: Smart charging detection, automatic voltage adjustment, low-voltage charging mode (100mA), LED status indicators