Nitecore UI2 – USB Li‑ion Battery Charger | Dual Slot

The Nitecore UI2 is a lightweight and portable USB Li‑ion battery charger, ideal for home, travel, and outdoor use.

Its USB input allows charging from power banks, solar panels, or USB adapters, while each slot operates independently with automatic selection of the optimal charging mode.

It supports large batteries such as 20700 and 21700, includes multiple safety protections, can revive over‑discharged batteries, and delivers up to 800mA charging current on a single slot.

Features

- Type: Li‑ion charger (3.6V / 3.7V)

- Input: micro‑USB

- Max charging current: 800mA (single slot)

- Auto charging mode: CC / CV

- Voltage detection:

- < 2.9V → 100mA

- 2.9V → 800mA

- Independent slot control

- Compatibility: 18650, 20700, 21700 and more

- Revives over‑discharged protected batteries

- Safety protections: reverse polarity, short circuit, thermal regulation, auto‑stop

- LED indicators for real‑time monitoring

- Material: flame‑retardant polycarbonate

- Certifications: CE, RoHS, FCC

- Dimensions: 125.5 × 59.5 × 32.1 mm

- Weight: 79.5 g