NITECORE UM2 USB-C Intelligent Dual-Slot Charger

What it is and what it does:
The NITECORE UM2 is an intelligent USB-C dual-slot charger designed to charge and manage various rechargeable battery types and sizes. Each slot is controlled independently and current charging data is shown on an LCD screen.

Main characteristics:
According to the official specification, the unit measures 152 mm × 73 mm × 40 mm and weighs 148.3 g. The housing is made of flame-retardant PC material per the manufacturer. Input options include DC 5V/2A and 9V/2A up to 18W (max). Documented output voltages are 4.35V ±1%, 4.2V ±1%, 3.7V ±1% and 1.48V ±1%. Output current is specified as 1,500 mA per slot in QC mode and 1,000 mA per slot in standard mode (maximums). The UM2 features an LCD to display real-time charging information.

Compatibility:
The official list includes many IMR / Li-ion / LiFePO4 cells (for example 10440, 14500, 18650, 21700, 26650, etc.) and Ni-MH / Ni-Cd sizes (AA, AAA, AAAA, C, D). The manufacturer provides the full size list in the technical documentation.

Functions and protections:
Automatic detection of battery type and level; automatic selection of voltage and charge mode (CC, CV, -dV/dt) with manual options for cut-off voltage and charge current. Features battery activation for over-discharged cells, Li-ion restoration, and protections against reverse polarity, short circuit and over-time. Certifications include RoHS, CE, FCC and CEC; product insurance is indicated by Ping An Insurance.

Box contents and additional purchases:
The official 'Package List' states 'USB Charging Cable'. However, the specification also includes a note in the weight line stating '(USB charging cable not included)'. This contradiction should be checked with the supplier before listing or sending units. No other mandatory accessories are listed; if you require a wall adapter or different cable length, purchase them separately.

Return-avoidance notes:
Verify whether the USB cable is included in the shipped product and confirm battery size compatibility against the manufacturer's list. The official documentation contains the noted inconsistency regarding the cable; resolve this with the supplier to prevent returns.