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Nitecore UM20 2-slot Digital USB Charger, for 18650 battery etc
Nitecore UM20 Digital Smart Charger for 18650 17650 17670 RCR123A 16340 14500 Batteries

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Price: $15.99

Quantity in Stock:(Out of Stock)

Availability: Currently Unavailable
Product Code: CHG-NITE-UM20

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2x Nitecore 2300mAh 18650 [Add $17.91]
2x Nitecore 3400mAh 18650 [Add $34.11]

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This product has been discontinued. Please see the UI2 for the upgrade model that is compatible with the new 21700 battery

UM20 is the latest innovation from Nitecore that is a USB powered Li-ion battery charger. It is compact, fully automated with clear digital display of detail charging status and charges many different type Lithium Ion rechargeable batteries.

Note: Authentic Nitecore charger has a validation number on the box. Scratch off the validation sticker to get your validation number.


  • Input voltage: Micro USB DC 5V
  • Output voltage: 4.2V ±1% / 5V
  • Output current: 1000mA / 500mA
  • Compatible with: Li-ion / IMR: 18650, 18490, 18350, 17670, 17500, 16340(RCR123), 14500, 10440
  • Dimensions: 3.94inch x 2.20 inch x 1.38 inch
  • Weight: 2.72oz (without batteries or power cord)


  • High definition LCD displays real time charging status
  • Automatically stop charging when complete
  • Reverse polarity protection
  • Apply the proper charging current and voltage based on the battery type and capacity.
  • USB output port to charge your mobile phones or tablets
  • Prioritize either the battery charger or USB output port based on your selection.
  • Selects charging current based on battery capacity
  • Rear USB cable winder that keeps your charger compact and organized
  • Enables data transfer via USB
  • Optimized charging for IMR batteries
  • Ultra-safe with optimal heat dissipation and fire retardant materials
  • Environmently friendly certified by RoHS, CE, FCC and CEC

Content in package: UM20 Digital charger x1; MicroUSB-USB power cord x1

Average Rating: Average Rating: 4.5 of 5 4.5 of 5 Total Reviews: 16 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 Shipped super fast. Upgrade from 1-slot! December 27, 2020
Reviewer: Monte Jensen from denton, TX United States  
Shipped super fast.  Ordered with addt'l car charger and wall charger.  The wall charger had an issue, but after contacting, a new, tested one shipped to me and arrived in 2 days from original email.  Great customer service!  Great products!  Overall, very positive experience.

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  0 of 0 people found the following review helpful:
5 of 5 Nitecore review July 11, 2020
Reviewer: erwsubmoa from Ks  
Don't have any experience with it yet. Looks like it should work well. Good packaging and fast shipping. Coming from Nitecore, I think it will work just fine.

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  0 of 0 people found the following review helpful:
5 of 5 charger January 6, 2020
Reviewer: Helen Konz from Pittsford, NY United States  
this was a gift, hope it does the job! very timely delivery.

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  1 of 1 people found the following review helpful:
2 of 5 Works Great at first December 25, 2019
Reviewer: Cynthia Adams from Batesburg, SC United States  
Bought this online due to my last one gave out. The new one did great for a couple months then all I could get out of it was EE EE. Same as first one.

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  0 of 0 people found the following review helpful:
5 of 5 Nice charger for a good price September 9, 2019
Reviewer: Steve Feick from Farr West, UT United StatesU  
Digital charger, accepts several different types of battery sizes. readout tells you the percentage of change on each battery, comes as a complete package to charge with USB charging system. It is nice, I used it already, very high quality as is expected from Nitecore.

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