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NiteCore UM20 Dual Battery Charger

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If you use a mod with dual batteries, an external battery charger is usually a safer and more reliable option. When connected to a USB power source, the Nitecore UM20 Dual Battery Charger handles fast, intelligent charging of single or dual rechargeable batteries. With 2 adjustable battery slots, the UM20 can handle 18650, 14500 and 18350 cells, along with many other rechargeable battery types for vaping mods and e-pipes.

The Nitecore UM20 charger comes with a removeable USB power cable. The charger will automatically adjust charging to match the output power of the mains adapter (not supplied) or other USB power source.

At the top of the UM20 dual battery charger you’ll find a multi-function LCD screen. As well as showing a graphic ‘bar’ image of the battery levels for each slot, the screen also displays charging progress as a percentage. The screen also shows the status of the UM20’s USB output connection.

If you have another mod or phone with a mini USB connection and cable, the UM20 dual charger can be used for ‘pass-through’ charging and data transfer. The pass-through cable is plugged into a discreet USB port in the back of the charger. If your power source has an output lower than 1 Amp, a special USB Priority switch on the top edge of the charger can be used to set charging priority. Simply decide whether you want the batteries or external device to be charged first. If your USB power source can deliver 1 Amp or more, the UM20 will charge the batteries in the slots and the external device simultaneously.

Nitecore have designed the UM20’s battery charging bay to sit on top of a built-in, non-slip pedestal. For tidy storage, the UM20 dual charger’s power input cable can be neatly wrapped around the pedestal.

1 x Nitecore UM20 Dual Battery Charger
1 x Clip-In Removeable USB Power Cable
1 x UM20 Instruction Sheet

Compatible with:
10440/14500/14650/16340/17335/17500/17670/18350/18490/18500/18650/18700/20700/21700/22650/25500/26650 3.6V/3.7V Li-ion batteries

Nitecore UM20 Dual Charger Features:
Size: 100mm x 56mm x 35mm
Weight: 77.2g (without batteries and USB cable)
Input voltage: 5V DC (from USB power source)
Input current: 500mA minimum
Output voltage: 4.2V ±1%
Dual slot battery bay
Independent charging for each slot
High definition LCD screen
Displays bar battery levels, charge progress percentage & USB connection status
Individual display above each battery slot
Intelligent management of input current
Intelligent battery charging
Spring loaded terminals adapt to compatible battery sizes
USB pass-through port for charging an external device
USB pass-through connection has data transfer capability
Use the UM20’s ‘USB Priority’ switch to choose charging priority
Simultaneous charging of batteries & USB device if input current = 1A or more
Automatically ends charging cycle
Fire retarding construction
Charging bay mounted on non-slip pedestal
Pedestal acts as cable winder for tidy storage
Extra ventilation for cool charging
Battery reverse polarity ‘EE’ display & protection
Device has CE, RoHS, FCC & CEC certification

For warranty information see our terms & conditions page.


We only ship orders to UK and operate a Same Day Dispatch (99% of the time, sometimes delays may occur) on all orders placed before 4pm on working days (Monday to Friday excluding weekends & Bank Holidays). Any orders placed after 4pm cut off on weekdays (Monday to Friday) or over weekends, will be dispatched the next WORKING day. We do not dispatch goods over weekends or bank holidays and do not offer delivery on Bank Holidays.

When you place an order, we will estimate a delivery date for you based on the shipping method you have chosen. This is an estimation only and is not guaranteed delivery date. All orders are shipped in discreet packaging.

You may return most new unopened items (excluding e liquids) within 14 days of delivery for a full refund excluding our postage costs we have incurred. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect item etc.). If the item is reported as defective, we will check item for issue/fault before deeming it faulty.

You should expect to receive your refund within 7 working days of the return arriving with us and being deemed faulty, however, in many cases you will receive a refund more quickly. This time period includes the product testing and the time it takes your bank to process our refund request (3 to 5 working days).

If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.

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