Maxoak K2 50000mAh Power Bank

  • DC power bank designed for Laptops. Compatible With a Wide Variety of Laptops (Max.130W).
  • Long-lasting laptop power bank with a capacity 50000mAh (3.7V)/185Wh (130W Max.)
  • Multi Outputs -DC20V/DC12V/USB5V: 1*DC20V/5A for Laptops, 1*DC12V/2.5A for Cameras, Routers, LED lights, 4*USB 5V For Smart Phones, iPad, Tablet &more.
  • Charge and discharge at the same. Charge Several Devices Simultaneously.
  • AC recharge. Recharged in Just 6-8 Hours by AC wall outlet. For car recharge, you need to buy a power inverter yourself.
  • Size 8.1" x 5.3" x 1.3" And Weight 2.77lb. You Can Easily Put it in your briefcase, backpack Or the carrying bag
  • Superior Quality&SAFETY Guaranteed: Conform to UL1642/UL2056/CE/FCC/ROHS/UN38.3/PSE Standards. Constructed with Lithium-ion Polymer Battery Cells& BMS control and 1000+ Long Recharge Cycles.
  • 12 Months Hassle-free 100% Satisfaction & Replacement Warranty.
We found there are many power bank designed for smartphones, but no specific power bank for Laptops, so we develop this MAXOAK laptop Power Bank (Model K2) which include 14 kinds of DC connector for almost 95% Laptops (Max.130W), ultra high capacity 185Wh (50000mAh) can usually charge your laptop about 2 times+ (8Hrs+). If you are looking for a long-lasting laptop power bank, this power bank is your best choice.

It features with one DC20V/5A (max.130W), one DC12V/2.5A and four 5V USB outputs, provide off-grid power backup for emergency power failure while engaged in outdoor working and outdoor exploring life. We work and play on on our laptop, take laptop on camping trip or travel.

We take quality, safety as the most important thing. We built in high quality lithium-ion polymer battery cell certifacted with UL1642/UL2056/CE/FCC/ROHS /UN38.3/MSDS/PSE. We have strict material inspection and production supervision and testing process, ensuring the highest quality, safety, reliability and performance.

Compared with AC outlet power bank with the same capacity, it has a higher discharge rate and has a much longer charge time for the same device. Besides, it has a much better heat dissipation. Moreover, it has a much longer life cycle time that can reach up to 1000+.

Its flat and slim design make it easy to put in briefcase and backpack. Its Weight: 2.77lb and size: 8.1"in x 5.3"in x 1.3"in. It is built in 8pcs 6250mAh lithium-ion polymer battery cells, size as a book. It is real 50000mAh, so it is impossible to be very lightweight and small size as lower capacity power bank, pls check the size and weight carefully ahead.

It includes 14 kinds of DC connector for almost 95% Laptops (Max.130W), the brand/models covers Dell HP Lenovo Surface pro Sony Samsung Acer Toshiba. Tips: Cann’t charge Lenovo Yoga 3 14, yoga 900 (20V 3.21A), yoga 3 11 13 milx 4 700s (20v 2a), dell xps 12(Type C) and other type-C laptop. Cann't charge Apple Laptop.

We include all the accessories needed, including Laptop power bank (K2) x 1, Home charger x 1, DC cable x 1, Laptop charge connector x 14, Multifunction bag x 1, Manual x 1, message card x 1.

  • What is the capacity of the K2?

    50000mAh(3.7V)/185Wh.we built in 8pcs 6250mAh lithium-ion Polymer battery cell.

  • What laptops can be charged by K2?

    First, the power of your laptop should not exceed 130W( you can check the power on the label that pasted on your laptop adapter).We included 14 pcs dc connector for different laptops including Dell HP Lenovo Surface pro Sony Samsung Acer Toshiba iPad.It can charge laptops(max.130W) almost 90% laptops in the market. you can email us to check whether it is compatible with your laptop.Second, check the adapter connector size and check whether we have the proper dc connector for your laptop.

  • How Can i Know Whether My Laptop Will Cause Power Bank Overcurrent or not?

    Please Check the label pasted on the adapter, if it is more than 130W (DC output current is more than 7A). It may cause our power bank turn off during charging for overcurrent. so we do not suggest to use our power bank to charge your laptop.

  • Can I charge Apple laptops including Macbook/MacBook Air/MacBook Pro?

    Can not, pls use our another model (K3) which is especially designed for Apple laptops.

  • Can it charge surface pro 3 /4?

    It can charge surface pro 3 (dc 12v) and surface pro 4 (dc 12v).You need to buy a dc to surface cable yourself.But , it can not charge surface pro (dc 15v).

  • Can it charge usb-c device?

    Can not.

  • Can it support charge and discharge at the same time?


  • How long can it charge a laptop?

    It depends on the power of your laptop and how you use the battery during charging.For example: if your dell laptop (45W). the working time is about : 185*0.85/45=3-3.5times.Working time= 185wh*0.85/the power of your device.

  • Why it shut down during charging my device?

    Check whether the power of your device exceed the max.130w or lower than the shutdown current.Low shutdown current for 12V port:150mAHigh shutdown current for 20V port:>7ALow shutdown current for 20V port:200mALow shutdown current for 5V port:70mA

  • What is included in the package?

    Package include:Laptop power bank(K2) x 1,Home charger x 1,DC cable x 1,Laptop charge connector x 14,Multifunction bag x 1,Manual x 1,message card x 1