The Nitecore UM4 is a sophisticated compact USB powered battery charger for all your household batteries. It's accuracy and sophisticated charging design doesn't mean it needs to be hard to use for the end user. The UM4 charger features large LCD display that will show critical info about the batteries being charged. Such as charge state, battery type and end voltage. Leaving the guess work out and making it much simpler to use. Each of the 4 slot are independently controlled to maximise efficiency and safety.

The Nitecore UM4 is also compatible with both normal household AA, AAA batteries as well as modern Lithium-Ion cells commonly used in high powered LED torches and vaping. With an integrated USB socket, USB powered portable electronics can be charged too!

The UM4 has a specific charging program for delicate IMR batteries. Monitoring the entire charging process and ensuring the Cutt-off voltage is always within safe limits to the extend the lifespan of the IMR batteries.

The Nitecore UM4 replaces our very popular Nitecore I4 and D4. With an improvement with max power, addition of LCD screen and reduction in size. This four-slot model is ideal users that charger higher number of batteries at once. Such as for high-powered LED torches used in hunting and search and rescue. Nitecore produce a 2-slot version with the same features for the space conscious travellers or lighter user that we also carry.

Power this charger from your existing portable USB charger or quality power bank. To achieve maximum power and charging time, we recommend use of a Quick Charge 3.0 USB power adaptor. Mr Positive carries a selection of Quick Charge 3.0 mains powered USB adaptors available separately.

Features:

4 independent charging slots
LCD display for real time charging data
Internal resistance and battery detection
Intelligent charging mode selection (CC, DC and -dV/dt)
Manual charge setting
USB Powered
Overcharge protection
Over-Discharge Li-Ion battery activation
Short circuit protection
Polarity protection
Constructed from durable and fire-retardant PC materials
Intelligent temperature regulation

Specifications:

Input: 5v 2a DC / 9v 2a (Quick Charge) 18w max
Output: 4.35v / 4.2v / 3.7v / 1.46v +/-1%
QC Mode: 1500mah x 1 (max) / 1000mah x 2 (Max), 500mah x 4 (Max)
Dimensions: 159 x 107 x 41mm
Weight: 233g

Li-Ion / IMR / LiFePO4 Compatible Batteries:
1044, 14500, 14650, 16500, 16340, CR123A, CR123, 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26650, 26700

NiMH / NiCD Compatible Batteries:
AA, AAA

Thermals

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