Nitecore UM4 USB Quadro Slot Battery Charger for AA, AAA, AAAA, 18650, 26500

Availability: 3 In Stock
SKU: NIC0031

Input: DC 5V/2A 9V/2A, 18W (MAX)
Output voltage: 4.35V±1% / 4.2V±1% / 3.7V±1% / 1.48V±1%
Output current:

  • QC Mode: 1,500mA*1 (MAX), 1,500mA*2 (MAX), 750mA*4 (MAX)
  • Standard Mode: 1,500mA*1 (MAX), 1,000mA*2 (MAX), 500mA*4 (MAX)

Compatible with:


10440, 14500, 14650, 16500, 16340(RCR123), 16650,
17350, 17500, 17650, 17670, 17700, 18350, 18490,
18500, 18650, 18700, 20700, 21700, 22500, 22650,
25500, 26500, 26650, 26700

Ni-MH/Ni-Cd: AA, AAA, AAAA, C, D


  • Total max output of 3000 mA with a single slot max output of 1500 mA
  • LCD display with real-time charging information
  • USB charging port
  • 2 Hours to charge 80% of a 3500mA battery
  • Specially optimised for IMR batteries (it will monitor the entire charging process to ensure cut-off voltage is always within safe limits)
  • Automatically select between 3 charging modes (CC, CV and -dV/dt) according to the battery type and capacity
  • Long press the C button to manually enter charging setting mode, voltage selection: 3.7v, 4.2v, 4.3v and charging current 100mA-1500mA
  • It takes various power sources like USB adapters, power banks and solar panels.
  • Over-discharged IMR battery restoration (long press the V button to enter the restoration mode)
  • Over-discharged Li-ion battery activation (it shows EE EE when an over-discharged battery detected)
  • Auto energy saving mode - the LCD screen will go dim after 10 mins of no-action
  • Anti-short circuiting and reverse polarity protection
We dispatch your order on the same day if payment received before order cut-off time, otherwise we will dispatch it the next working day. However for heavy and over-sized items, order cut-off time might be earlier as we may have to use a courier like UPS.

UK Domestic:

  • Free Standard Delivery on all orders
  • Royal Mail 24 (delivery confirmation only) - £2.99 per order
  • Next Day Delivery - £5.99 per order

EU Countries:

Orders with value over 22 euros may subject to local VAT tax and handling fee. Orders with value over 150 euros may subject to import duty tax.

Postage may vary depends on the destination country.

  • RoyalMail Airmail Priority - £1.95 per order
  • International Tracked - £10.95 per order
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