The Nitecore NB20000 backup power supply is the largest capacity backup power supply of its manufacturer's NB series. The weight of the backup power source is only 324.5 g, and according to the manufacturer, it is 27% lighter compared to the usual backup power source. The NB20000 backup power source has a very durable carbon fiber structure used in the aviation and automotive industries, which protects the battery from impacts.

The Nitecore NB20000 has an exceptional 20,000 mAh Li-ion battery with an energy density of 234 mWh/g. The manufacturer promises that the iPhone 12 smartphone can be fully charged six times with the backup power source. The backup power supply has two USB-C ports, one only as an input port and the other as both an input and an output port. The device also has two standard USB-A output ports. In addition, the device has QC (Quick Charging) fast charging.
According to the UN38.3 standard, the NB10000 backup power source can be taken on board, as the nominal capacity of the device is less than 100 Wh.

The Nitecore NB10000 backup power supply has a four-stage charge status display that tells you the remaining charge status. Four lights at 100% charge, three lights at 75%, two lights at 50%, one light at 25% and a flashing light when the charge is almost used. The backup power source also has a low-current charging mode for more sensitive devices, such as smart watches. The low-current charging mode is activated by double-clicking the power switch.

Technical information:

• Capacity: 20,000 mAh 3.85 V (77 Wh)
• Cell: Li-ion
• Dimensions: 136.3 x 60 x 21.4 mm
• Weight: 324.5 g
• Input:
  • USB-C (IN, 30W MAX, PD Compatible): 5V=2.4A / 9V=3A / 12V=2.5A / 15V=2A / 20V=1.5A
  • USB-C (INPUT, 18W MAX): 5V=2.4A / 9V=2A / 12V=1.5A
• Output:
  • USB-C, 45W MAX, PD/QC Compatible: 5V=2.4A / 9V=3A / 12V=3A / 15V=3A / 20V=2.25A
  • USB-A (OUT2/OUT3): 5V=2.4A / 9V=2A / 12V=1.5A
  • MULTI Ports: 5V=3A (MAX)
• IP rating: IPX5
• Suitable for: camping, trail running, outdoor enthusiasts
• The device has protection against short circuit, overcharging, overdischarge and overheating

Included in the package:
• Nitecore NB10000
• USB-C charging cable