The Maxoak K2 Powerbank is a genuine 50,000 mAh powerbank that can recharge your phone, tablet and even your laptop! It’s truly the last powerbank you’ll ever need to buy.
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Aside from the 4 USB ports for charging phones and tablets, it also includes a 20V DC jack output with multiple connectors for charging laptops. Also there’s a 12V output which can be used for monitors, TVs, projectors and other 12V equipment.
I discharged the powerbank with a 5V ~1A load which ran for 31 hours and consumed a total of 168.5 Wh. The load was actually a little higher than 1A but I rounded it down for simplicity.
168.5Wh is within 10% of the expected 185Wh which makes this a genuine 50,000 mAh powerbank.
At 2.77lb or 1.25KG, you’re going to feel it in your backpack, but that’s the price you pay for such a high capacity!
The Maxoak powerbank includes a 16.8V 2.5A charger which can fill the powerbank from 0 to 100% in 6-8 hours.
Although the laptop DC output is labelled as 20V, under load it could go as low as 19V. The reality is that most laptops can actually accept slightly higher and slightly lower voltages because of onboard regulators. But of course you take your own risk if you go outside of the specs for your laptop.
The over current protection on the 20V output will kick in at 4.5A.
The over current protection on the 12V output will kick in at 3.5A.
I recommend checking their Amazon listings to see if your laptop is officially supported because they’re constantly providing updated information and occasionally update the included connectors.
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