Nitecore UM20 Battery Charging System

Nitecore UM20 Battery Charging System

Nitecore UM20 Battery Charging System

B&H # NIUM20 MFR # UM20
Nitecore UM20 Battery Charging System

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Product Highlights

  • Compatible with Li-Ion and IMR Chemistry
  • Charges Sizes from RCR123 to 18650
  • LCD Screen Displays Charge Status
  • Two Independent Charging Circuits
  • USB Output Charging
  • Priority Mode for Manual Output Select
  • Supports Data Transfer via USB
  • Reverse Polarity Protection
  • Integrated USB Cable Winder
  • Constructed from Fire Retardant Material
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Charging Bays: 2

1 2
$0.00 Tax Collected Outside NY and NJ

You Pay: $15.95

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Nitecore UM20 overview

  • 1Description

The double-bay UM20 Battery Charging System from Nitecore is a versatile charger for lithium-ion and IMR batteries. An intelligent power management system automatically detects the number of batteries installed, evenly distributes charging power, and selects the appropriate charging current based on the specific needs of each battery installed. Besides charging batteries, this charger also provides output power from a standard USB port, enables data transfer throughput via the USB and micro-USB ports, and features an integrated USB cable winder. A LCD screen clearly displays the charging status and power level of each battery, and output selection. Reverse polarity and over-charge protection prevents damage to the batteries if one or both are installed incorrectly or left in the charger after charging is complete.

Charging
  • Two independent charging bays
  • Separate spring-loaded sliders accept different battery sizes and ensures a secure connection
  • When full current is available, it will simultaneously charge batteries and USB device
  • When full current is not available, user can choose Battery or USB Priority modes
    • Battery Priority: Batteries are charged completely then switches to charge the device plugged into the USB port
    • USB Priority: When device plugged into USB port is fully charged, it will switch and charge the batteries second
    • Selectable according to user preference
  • Charging programs
    • Detects battery number and current status of each
    • Automatically selects "constant current" or "constant voltage" depending on each battery requirement
    • Switches to "trickle charge" when batteries are full to maintain full charges
    • Over-charge protection cut current to prevent damage to batteries
Functionality
  • Allows data transfer from external USB device to computer using the standard and micro-USB ports
  • Reverse polarity protection: Stops charging process if battery is installed incorrectly
  • LED screen displays battery power level and charging status
Lithium-Ion/IMR Battery Compatibility
  • 18650
  • 18490
  • 18350
  • 17670
  • 17500
  • 16340 (RCR123)
  • 14500
  • 10440
In the Box
Nitecore UM20 Battery Charging System
  • USB Cable
  • Limited Lifetime Warranty
  • Table of Contents
    • 1Description

    Nitecore UM20 specs

    Charger
    Charging Bays 2 x 17670, 16340, 17500, 18350, 18650, 18490, 10440, 14500
    Charging Voltage 4.2 VDC
    5.0 VDC
    Charging Amperage 500 - 1000 mA
    DC Input Power 5 VDC
    Charger Dimensions 3.9 x 2.2 x 1.4" / 100.00 x 56.00 x 35.00 mm
    Charger Weight 2.7 oz / 77.1 g
    General
    Certifications CEC, RoHS, as per Manufacturer
    Packaging Info
    Package Weight 0.3 lb
    Box Dimensions (LxWxH) 5.3 x 3.4 x 1.5"

    Nitecore UM20 reviews

    UM20 Battery Charging System is rated 4.3 out of 5 by 3.
    Rated 5 out of 5 by from Works Great! I use this to charge my 18650 batteries. I love the price, how lightweight the charger is, the clear digital readout, and USB capability. Works wonderfully! So glad I ended up purchasing this particular charger after much research.
    Date published: 2015-12-21
    Rated 4 out of 5 by from Does the job... charges batteries and keeps you informed. I only wish that I'd purchased one that could charge 3 or 4 batteries at once. My device uses 3 batteries, so I'll need to work out a system for charging... or purchase another. ;)
    Date published: 2017-01-17
    Rated 4 out of 5 by from Works Definitely needs a wall adapter.
    Date published: 2017-02-01
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