Nitecore UM20 Mini 2-bay USB Li-ion Battery charger


$ 15.95

SKU: nitecoreUM20

This product is eligible for discounts depending on how many you buy! See the table above for pricing at different quantities. You can purchase other products in the same category (batteries, chargers, or accessories) and it will add to the wholesale discount. Add some products to your cart to test! Please note that during special sales you may see no quantity pricing table above in which case the sale price is the price no matter the quantity.

Nitecore UM20: USB Powered Portable Lithium Ion Charger

This is a cool little travel size charger, perfect for folks on the go. As a two battery charger, it's not quite as portable as its smaller brother, the UM10, but is still far more portable than chargers with larger screens while still telling you what you need to know: the screen displays current charging progress accurate to 1%.

Plus you get the added benefit of charging 2 batteries at once.

The Nitecore UM20 conveniently works off a USB port.  Can charge most common cylindrical batteries like 18650 and 18350 (full list in the specs below).

Up to 1A Charge Speed for 1 or 2 batteries. Allows really fast charging for a USB portable charger, with selectable 1A or .5A modes, which can handle 2 batteries at a time. 

Nitecore UM20 allows you to charge your batteries PLUS a device. Only have one USB port but need to charge your batteries and something else? No problem! The Nitecore UM20 Includes USB pass-through as well so that you can plug another USB device into the UM20 so you don't have to worry about running out of USB ports.

Is made to be very portable, including a internal cable winder so the cord is kept from tangling with everything.  Also includes a USB cord.

Anti-counterfeit validation code is on the package so you can be sure it's genuine Nitecore.  


  • Charge speed: Selectable 1A x 2 or .5A x 2
  • Input : Micro USB DC 5V
  • Output voltage: 4.2V ±1% / 5V 
  • Output current: 1000mA / 500mA
  • Dimensions: 3.94" x 2.20" x 1.38"
  • Weight: 2.72 oz
  • Compatible with:
  • Li-ion / IMR cylindrical cells in sizes: 18650,18490,18350,17670, 17500,16340,14500,10440, 20700, 21700
    • Includes the IJoy 20700/21700 - though with the 21700, it's a very tight fit and is NOT our recommended charger. We recommend the Efest Blu6 instead to avoid damaging the battery (be very careful!)
      • (At a minimum, we recommend the XTAR VC2, which is still a very tight fit, but the Blu6 is the best).
    • Does NOT fit 26650s

In the Box:

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