For example, if your portable charger outputs less than 30W of power, you’ll still be able to charge your Chromebook but very slowly. How Long Does It Take for a Chromebook to Charge with a Portable Charger?Ĭharge time depends on your portable charger’s capabilities. But if you want to be absolutely sure, simply unplug your portable charger when your Chromebook battery has reached 80 or 90 percent. So, there’s really nothing to worry about. Your portable charger will also limit its charging requests when talking to a laptop. If your Chromebook is running low on battery, it will refuse large power requests. Simply put, your Chromebook will “talk” to your portable charger and then decide who should charge who. Then, they negotiate for the power they need. When you connect a portable charger to your Chromebook, the two devices assess each other’s capabilities. Well, if you’re charging your laptop long enough, your power bank will begin to “recharge” off of your Chromebook.

Many Chromebook users are reluctant to use portable chargers, fearing the charger could actually steal charge from the laptop. Will the Portable Charger Steal Charge from My Chromebook?

Most ChromeOS devices support 30W or 45W, but other models may support a different charging speed. The information is available on the bottom cover of your laptop. Charging Your Chromebook with a Portable Charger Check the Input Charging Speedīefore buying a portable charger, check the input charging speed that your Chromebook supports.

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