Nitecore UM4 Charger


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Select Vape presents the Nitecore UM4 Charger by (Nitecore). The Nitecore UM4 charger features a 4-bay fast charging smart charger that quickly charges up to four of your batteries. This charger is able to charge all four batteries independently from each other and the user is capable of controlling the charging modes through the built-in LED display screen. The Nitecore UM4 is equipped with a specially designed charging program from IMR batteries specifically. This program reliably makes sure that the cut-off voltage is within safe limits, increasing the lifespan of the batteries.

The Nitecore UM4 is also equipped with many features that are unique to Nitecore products. Some of these features include Over-Discharged IMR Battery Restoration, Over-Discharged Li-ion Battery Activation and Energy Saving Function. The Over-Discharged IMR Battery Restoration and Over-Discharged Li-ion Battery Activation help keep your batteries in top condition while improving lifespan. The Energy Saving Function makes the LED screen become dim and save energy when there is no action to the buttons or batteries in 3 minutes. Overall the Nitecore UM4 is the perfect device to improve your quality of life vaping experience.

See What Customers Are Saying:

  • “I absolutely love the Nitecore UM4 charger. Only wish that I’d purchased it years ago. Shows the life of each battery and easily fits a 21700. I would recommend this charger, for sure. I know it’s a few extra bucks, but it’s worth it.”
  • “I hadn’t used any high quality smart charger in the past. The Nitecore UM4 charger is great because it does not heat up the battery while charging. Also , all the information on the status of the charge and the health of the battery is good to know to proactively do a replacement.”

Features and Specs:


4 Bay Charger

Intelligent USB 4 Slot Charger

Multiple Charging Speeds

  • 1.5A x1
  • 1.0A x2
  • 0.5A x4

QC Mode

  • 1.5A x1
  • 1.5A x2
  • 0.75A x4

Digital LED Display Screen

Real Time Charging Information

Short-Circuit Protection

Overcharging Protection

Reverse Polarity Protection

Heat Dissipation Design

Compatible with :
  • IMR/Li-ion/LiFePO4: 10440, 14500, 14650, 16500, 16340(RCR123), 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490,18500, 18650, 18700, 20700, 21700, 22500, 22650,25500, 26500, 26650, 26700
  • Ni-MH/Ni-Cd: AA, AAA, AAAA, C, D

Durable and Fire-Retardant PC Materials

Dimensions: 159 x 107 x 41mm

Input: DC 5V/2A 9V/2A 18W (MAX)

Output: 4.35V±1% / 4.2V±1% / 3.7V±1%/1.48V±1%

QC Mode: 1500mA*1 (MAX), 1500mA*2 (MAX), 750mA*4(MAX)

Standard Mode: 1500mA*1 (MAX), 1000mA*2 (MAX), 500mA*4 (MAX)

You Receive:

  • Nitecore UM4 Battery Charger
    • USB Power Cord
    • User Manual

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