There’s nothing worse than trying to get work done offsite and realizing your laptop is nearly dead. OK, there are plenty of worse things, but running out of battery when you’re not near an outlet can be seriously inconvenient. Laptop power banks are similar to other rechargeable banks you may have used to top off a smartphone, but with larger capacities and more ports. There’s no standard rating to qualify a battery as a laptop-grade brick, but here we only considered versions with at least a 20,000mAh capacity so they can deliver enough charge but under 27,000mAh (99Wh) so the TSA will let you fly with them in your carry-on luggage. After testing a slew of popular options over the past couple of years, we think these are the best laptop power banks you can buy.
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