Beam EXTEND L20 Portable Power Bank


Stay charged anywhere you go with the BEAM EXTEND Li-Polymer Power Bank series; these portable lightweight power banks are the perfect power solution for camping, off road, traveling, hiking, and outdoors for people on the go. 

New In Stock

The BEAM EXTEND L20 is a sleek and thin 20000mAh power bank that features the latest USB-C connectivity to provide quick and optimum power for your supported devices. The EXTEND L20 can simultaneously charge up to 3 devices and is fully capable of charging your smartphone or tablet several times over.  It is perfect for travel, on the road, on a boat or in a flight. You can also recharge the battery in a flash from empty to full capacity in less than 8-hours, saving you half the time compared to other models.

Beam L20 Portable Power Bank

Input/Output 1 – USB Type-C (18W)
(5Vdc 3A, 9Vdc 2A, 12Vdc 1.5A)
Input 2 – USB Micro-B
(5Vdc 2.1A Max)
Output 2 – USB Quick Charge
(5-6.5Vdc 3A, 6.5-9Vdc 2A, 9-12Vdc 1.5A)
Output 3 – USB-A Output
(5Vdc 3A)

Charging Time Less than 8 hours
Degrees C Degrees F
Storage +5 to +35 +41 to +95
0 to +40 +32 to + 104
Visual Interface 4-LED
Physical Interface Power On/Off Button
Dimensions mm inches
Beam L20 Portable Power Bank (L x W x H) 137 x 68.5 x 25.5 5.40 x 2.70 x 1.00
Box Dimension (L x W x H) 182 x 107 x 35 7.17 x 4.21 x 1.38
Weight g lbs
Beam L20 Portable Power Bank 346 0.76
Boxed Weight 400 0.88
Pack Capacity 20,000 mAh/ 3.7Vdc (74Wh)
Usable life 300 charge-discharge cycles minimum
Storage Life Requires recharging every 6-months if in storage
Protection Short Circuit Protection
Visual Interface 4 LEDs
Physical Interface Power On/Off Button, Battery Level Check

Kit Contents

  • L20 Power Bank
  • USB Micro-B Cable with Lightning Adaptor (30cm)
  • USB Type-C to USB Type-C Cable (30cm)
  • Quick Start Guide


  • Robust design with strong casing to protect internal components
  • High quality and long lasting li-polymer battery
  • Charges devices faster and offers more power
  • Lightweight, compact, easy to carry and store
  • Auto Detect device’s electrical requirements
  • USB-C input/output, more power to charge larger devices
  • 24-month warranty

Specifically designed for:

  • Smartphones, Tablets, Mobile Phones, MP4 Players, Gaming Devices, Digital Cameras, Action Cameras
  • Tested on Iridium GO!
  • Tested on ZOLEO
  • Inmarsat Phones
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