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MAXOAK

MAXOAK Laptop Power Bank 185Wh/50000mAh(Max.130W) Portable Laptop Charger External Battery Pack for Laptop iPad Phone Notebook

    • Based on 1,750 reviews
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Fulfilled by MAXOAK US
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Features

  • Superior Quality&SAFETY Guaranteed: Conform to UL1642 and UL2056 Standards. Constructed with Lithium-ion Polymer Battery Cells&Built-in 6 Security Protections to Ensure Safety Use and 1000+ Long Recharge Cycles. We Offer Customers a 12 Months Hassle-free 100% Satisfaction & Replacement Warranty.
  • Long-lasting DC Power Bank for Laptops:Ultra High Capacity 50000mAh(3.7V)/185Wh(130W Max.).Compatible With a Wide Variety of Laptops(Max.130W)- Dell HP Lenovo Surface pro 2/3/4(DC12V) Sony Samsung Acer Toshiba IBM NEC.We Include 14 DC Connector for Various Laptops. Once Fully Charged, K2 Portable Battery Pack Can Charge Laptops(65W) About 2.5 Times and Smartphone About 11-18Times without Using your Laptops/Phones While Charging,It is Much Power Saving than AC Outlet Power Bank.
  • DC20V/DC12V/USB5V Outputs:All-IN-1 FAST CHARGE Battery Pack.It Features with 1*DC20V/5A for Laptops(18.5V~20.5V), 1*DC12V/2.5A for Cameras,Routers,LED lights, 2*USB 5V/2.1A and 2*USB 5V/1A For Smart Phones, iPad, Tablet &Other USB-Charged Devices. You Can Charge Several Devices Simultaneously to Save You Much Time. Ultra Energy Saving & Fast Charging Speed with DC input:16.8V/2.5A, OUR K2 Battery Pack Can Be Recharged in Just 6-8 Hours.
  • Emergency Battery Backup for Outdoors. Size 8.1" x 5.3" x 1.3" And Weight 2.77lb.You Can Easily Put This Portable Charger in Your Briefcase ,Backpack Or the Carrying Bag. Keep your laptops, Phones, Fans,LED Lights, Nintendo Switch, Speakers, Cameras Powered During Road Trip, Hunting,Camping, Fishing,etc.
  • WHAT YOU CAN GET: 1 x Laptop power bank(K2),1 x AC Adapter, 1 x DC cable, 14 x DC connector for Laptops, 1 x Multifunction bag, 1 x Manual.

Connector Type: USB Type A


Brand: MAXOAK


Battery Capacity: 50000 Milliamp Hours


Special Feature: Portable, Over Current Protection, Fast Charging


Voltage: 3.7 Volts


Brand: ‎MAXOAK


Item model number: ‎K2-50000mAh


Item Weight: ‎2.77 pounds


Product Dimensions: ‎8.1 x 5.3 x 1.3 inches


Item Dimensions LxWxH: ‎8.1 x 5.3 x 1.3 inches


Voltage: ‎3.7 Volts


Batteries: ‎1 Lithium Ion batteries required. (included)


Manufacturer: ‎maxoak


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎June 2, 2015


Frequently asked questions

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Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • If you are looking for the best power bank out there in 2016 the K2 is the one!
You need to look no further for a reliable 5 STARS power bank. I own a 17” ASUS G750-JM with an intel i7 quad core and Geforce 860m GTX. In terms of electricity consumption, my laptop is definitely power hungry. I have all 4 ram slots full and 2 hard drives installed. Before purchasing the K2 power bank I had purchased another power bank but had to return it because it could not power my laptop, not even when off. With the K2 I was able to get almost 9 hours of power on standby only. Screen saver was off to prevent the screen from turning off. Yes, the power bank kept my huge laptop on for almost 9 hours on standby (not using the computer). This test was performed to figure out how long the laptop could be powered by the K2. I got 6 hours of power under normal laptop usage, I was even able to watch a dvd movie for about 2 hours and still had more than half the power left to do some work and mess around. I should mention that I had an external mouse and keyboard plugged in the USB slots during both tests, and even though the power consumption from these peripherals is minimal, it is something to keep in mind regarding the tests I ran, since in a real life scenario on an airplane for instance, the keyboard and the mouse will not be plugged in, therefore increasing the overall power left from the K2. Keep in mind that both tests were performed using the “high performance” power profile in windows 7. If I wanted to be more conservative, I could have lowered the screen brightness all the way down, turn off the laptop’s keyboard backlight, and put the power profile on “power saver” which overall could have given me a few more hours of juice in both tests, but since I almost never use the power saver windows profile, I thought I would use it under more realistic circumstances that apply to me on a daily basis. The K2 performed fantastic! Things you need to know and consider: The battery will not change my laptop when I am using it. That is because my laptop is a power hungry one (this will probably not apply to your laptop). I have no problem with that because honestly all I want is to be able to use it on the go. So if you own a power hungry laptop like mine, make sure your laptop’s battery is charged all the way before using it, so that the K2 will hold the charge at 100% for 6 or more hours until the K2 discharges completely, then when that happens you can continue to use your laptop’s battery for as long that one will last. If your laptop is a power hungry one and you wanted your laptop’s battery to be charged by the K2, you can do so if you turn off the laptop. In that case the K2 will be able to recharge the battery of your laptop. So, charging the laptop’s battery is an issue only if the laptop is on, but if you do not have a power hungry laptop like mine, you will sure be able to use your laptop while simultaneously charging its battery if it was discharged. This honestly does not bother me because like I said, what matters to me is being able to use my power hungry laptop on the go, which so far other power banks simply have not been able to do. I’ve read the reviews for power banks of other brands out there and they all scared me honestly. I read the reviews for the K2 and I was convinced I could try it with confidence, and boy… I am glad I trusted them! This is exactly what I was looking for. I am really looking forward to trying the K2 during my next international flight and probably being the only one in the plane with the laptop on during the entire flight. All USB ports worked fine. The unit looks really high quality. It’s a bit on the heavier side but listen: we are talking about quality here not something made out of cheap plastic, the unit looks and feels very durable. It can be fully charged over 1000 times. That’s a lot of times… to give you an idea, there are 365 days in a year. Are you going to be using the K2 every day? Very likely not! And if you would, you could do it for about 3 years. That’s a lot of time. Batteries degrade over time whether you use them or not, so more realistically this unit will last me 5 years maybe more, which is plenty of time for me. The original battery from an iphone 3GS lasted me 6 years (it recently died), and that was because I gave it good maintenance. If you plan on having the battery of your devices or power banks last as long as they possibly can, I recommend you to inform yourself about the type of battery your electronic device is using and learn the best practices to maintain the quality and extend the life of your battery. All the batteries of the laptops I have used have lasted me very long because I always gave them great maintenance. I found on youtube what seems to be an official video of the K2, check it out: [...] The customer support for the K2 is among the best I’ve ever ran into. The unit came with a free gift which was another smaller power bank for smartphones and tablet. I thought that was nice. It turned out the small power bank was defective and so I corresponded through amazon with the K2’s customer support. Minutes later I received an email telling me that I was going to get a new small power bank (replacing the free gift) at no cost to me. The person I corresponded to was incredibly friendly and kind. Help was offered to me in case I had difficulties using the K2. Customer support so efficient is what unfortunately you almost NEVER run into on amazon. I can’t even mention the amount of times that sneaky amazon resellers have tried to scam the crap out of me, and have made almost impossible returns of cheap $2 purchases. Shame on them for being such beggars. This is not an issue you will run into with this company. You can buy with confidence. This product is a great purchase at this price. It’s a 50000mah power bank and you are not gonna find another one at this price. Read the reviews! Not only for the K2, but for the other power banks as well. Look for 1 star feedback on amazon and really ask yourself if you want to go through what other people have gone through with other brands. I don’t know about you, but I don’t like to waste my time and do trial and error or hope that I am the lucky one. I like to go with what works. If you are paying less, you are gonna get less. Before purchasing the K2 I thought I could save money buying another power bank, I did it and I wasted my time. After that I went back to the K2. I should have purchased it the first time, but oh well, another lesson learned… Thank you to the people at the MAXOAK for the very fast support given to me and for their kindness. It honestly took me longer to write my review than it took them to answer my inquiry, but I hope this review can help other customers not go through the hassle I experienced before buying the K2. ... show more
Reviewed in the United States on March 20, 2016 by Amazon Customer
    • Excellent battery pack!
50,000 mAh (milli-amp-hours, or 50 amp-hours or 185 watt-hours) of power make this battery pack an excellent traveling companion if you expect to be away from AC outlets for a period of time. As a storage battery this unit is excellent! I, however, bought it for a different purpose and it is just as excellent for that purpose, too! I bought a mini-PC (beelink) and a drawing tablet which includes a video screen (XP-Pen Artist Pro 13.3) which draws its power from the mini-PC's USB port if desired (the drawing screen can also run off an AC plug-in power supply). I want to be able to take this mini-PC and drawing screen out in the back yard or traveling, and need a portable power supply. This MaxOAK battery pack powers the combination perfectly and provides many hours of use before needing to be recharged. I have not yet done a total run-down of the MaxOAK with the mini-PC and drawing tablet plugged in to see how many total hours I'll be able to get out of it, but I have used the combination for over 3 hourse and LED "power-remaining" indicators only went down from 4 to 3 over those 3 hours, so I'm expecting to get a lot of usage out of it. Far more time than I get from my laptop's battery and part of why I decided to go the mini-PC route instead of using my laptop. One factor I love about this battery is that it will turn off if there is no power draw for more than 30-seconds. That means I can leave the mini-PC and drawing screen plugged in and as long as they are turned off, the MaxOAK will stay turned off without me needing to turn it off or unplug it (which was a problem with a different battery pack I had tried). When I'm ready to use it I press the MaxOAK's power switch and then press the mini-PC's power switch and everything starts up and stays on until I shut down the mini-PC, at which point 30 seconds after that the MaxOAK shuts off. One other excellent feature for my purposes that makes this superior to my other Krisdonia battery pack is that the MaxOAK has a dedicated 20V output jack as well as a dedicated 12V output jack in addition to USB ports. The Krisdonia required me to turn it on and readjust the output voltage every time I wanted to use it with my mini-PC, which was a bother. With the MaxOAK I can leave everything plugged in and simply turn on the MaxOAK and the mini-PC and things work just fine. The MaxOAK does NOT get hot either while using it to power other things or while it is plugged in and recharging. Like all these sorts of battery packs with huge capacities, it does take a long time to fully recharge the MaxOAK but that's a small enough price to pay for the ability to recharge other devices or to power my mini-PC and drawing tablet when not close to AC power outlets. ... show more
Reviewed in the United States on January 8, 2024 by dhbailey

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