The Nitecore UM20 is an advanced USB management and charging system capable of charging two Li-ion batteries from a USB power source, while simultaneously charging an external device.
When used with a high power adapter the UM20 will charge the inserted batteries plus an external device (such as a mobile phone) simultaneously. If a low power adapter is being used the UM20 has a priority switch that allows the user to select which to charge first, then automatically charging the second option when the first is complete.
Compatible with the following Li-ion / IMR cells: 18650, 18490, 18350, 17670, 17500, 16340, 14500 and 10440
*Please note all chargers sold by Flawless UK Vape Distribution Ltd., are of British Standard quality and fit to be used in the United Kingdom only. Flawless UK will not be liable for any exchange or refund for any chargers purchased by any customer outside United Kingdom *