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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: Kayo Maxtar
  • Model Number: K2
  • Dimension: 206.9*136*33mm
  • Weight: 1257g
  • Outport: 5V/1A 5V/2.1A DC12V 2.5A DC20V 3A
  • Input: 16.8V 2.5A, 16.8V 2.5A
  • Socket Type: Micro USB
  • Color: Gray, Gray
  • Battery: Li-Po battery
  • Capacity: 50000mAh, 50000mAh
  • Output (6 ports): USB1&2: 5V 2.1A USB3&4: 5V 1A DC1: 12V 2.5A DC: 20V 3A
  • Charging Time: 6-8 hours
  • Cycle Life: Over 1000 times
  • Product Size: 206.9*136*33mm
  • Product Weight: 1257g
  • Certificate: CE ROHS FCC SGS

Packaging & Delivery

Packaging Details Gift packing box or OEM packing box
Delivery Time 20-30 days after all the detail information have confirmed

Kayo Maxtar high capacity 50000mAh portable power bank for laptop notebook smartphone and other mobile devices

High capacity 50000mAh portable power bank in kayo maxtar best seller in Amazon.co.uk


Kayo Maxtar's K2 50000mAh portable power bank for laptop notebook smartphone and other mobile devices which is the best selling in Amazon.co.uk.


here is some links for you to learn more about our K2 50000mAh portable power bank and energy storage system. For more information pls let me know freely thanks.

K2 50000mAh laptop power bank: http://youtu.be/dOQdNJn5Dcw

K3 36000mAh laptop power bank: https://youtu.be/FpoyMoc9m6A 

V6 12000mAh car starter power bank: https://youtu.be/DBufBG_Gt2o

Q1S 10200mAh quick charge power bank: https://youtu.be/Y-Ie6IYZkzg 

S16 13000mAh portable battery power bank: https://youtu.be/oQgrM_GMW6A

F6 7000mAh portable power bank charger:  https://youtu.be/_sYCNrZC15U 
PS5B PPS: https://youtu.be/9UllRFZxsic
PS10B PPS: https://youtu.be/qsWPheSeUYE 
PS4020B ESS: https://www.youtube.com/watch?v=GW3FNw0cZlo


Product Description

Laptop power bank K2 50000mAh portable power bank total output is up to 12A. support charging and discharging at the same time. Power 2 laptop computers and 4 mobile phones concurrently.


Now pls let me introduce our 50000mAh portable power bank for you breifly. Our real ultra high capacity 50000mAh portable power bank compatible with most popular laptops and notebooks. Once fully charged, our K2 portable 50000mAh portable power bank can charge your iphone 6 plus about 11 times, iphone 6 about 17 times, galaxy S6 almost 11 times.

Product Specifications


K2 50000mAh portable power bank for notebook and laptop

Kayo Maxtar K2 50000mAh portable laptop power bank for laptop and notebook

K2 50000mAh laptop power bank total output is up to 12A 6 ports which support charging and discharging at the same time

K2 50000mAh laptop power bank which can power 2 laptop computers and 4 mobile phones concurrently

The size of K2 50000mAh laptop power bank:206.9*136*33mm

The accessories of kayo maxtar K2 50000mAh portable laptop power bank

Company Information

Kayo Maxtar Group was founded in 1999. Main product lines include lithium battery cell, lithium battery pack, power bank and solar ESS.

Kayo Maxtar Group occupies over 112000 square meters of manufacturing facility with more than 20 automatic production lines. The company has more than 1000 employees including an accomplished management team of 50 a talented research & development team of 200, and a competent quality assurance team of 100.

Kayo Maxtar Group is vertically integrated perfectly. From supply of anode materials, battery cell, and PCM to product manufacturing, testing and quality control are provided and supported within the group.



1. Company certificates: ISO9001:2008 quality system certificated 

                                     ISO14001 environment system certificated

2. Products certificates: UL/CE/FCC/RoHS/UN38.3/PSE/REACH/IEC62133/KC/SAA etc.


3. Global product safety liability insurance: PICC


OEM ODM Advantages

As a specialized lithium ion battery manufacturer, we are capable of packing large capacity of electric power in a small sized mobile power bank.


Our in-house SMT production lines provide the best assurance to the PCM quality and performance.


A digital PSE system is implemented to monitor production quality control and store testing data. The digital PES is internally developed quality control software specifically for lithium battery production by Kayo Maxtar.


A complete set of testing equipment is employed for quality assurance.

Contact Information

For more information about 50000mAh power bank for laptops notebooks and smart devices.







Company website:www.poweroak.net/www.kayomaxtar.com

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