Surface Pro 3 owners who have had problems getting reasonable battery life from their tablets have relief coming their way.

Microsoft pushed out a firmware update to Surface Pro 3 devices on Monday that’s supposed to fix a problem that keeps the battery from charging all the way. An error in a limited number of devices causes the system to get the wrong charge capacity for the Surface Pro 3’s battery, the company said. As a result, the battery isn’t charged all the way, even though the system thinks it reached capacity.

“Think of this like a fuel gauge in a car, where the car looks to the fuel gauge to determine how much to fill the tank,” Microsoft said in a support document accompanying the update. “In this case, if the fuel gauge isn’t working right, the car would also not be able to fill the tank—even though the tank is fine.”

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New Surface Pro 3 firmware update should solve battery woes