The stacked design solves this issue and allows the dead space inside the battery to be filled in. Alternatively, phones can be made thinner and lighter while keeping battery capacity the same.įlat roll batteries cannot be packed tightly as the natural swelling that occurs when the battery is charged and discharged can bend the electrodes, damaging them in the process. This means that a 5,000 mAh battery like the one in the Galaxy S22 Ultra could have 5,500+ mAh capacity instead. Now The Elec reports that the company is preparing to use this method for smartphone batteries as well.īatteries produced using the stacking method have at least 10% higher capacities than the traditional roll design. This way the battery components can be packed tighter, resulting in a higher capacity for the same volume. About a year ago Samsung SDI started producing 5th generation batteries for electric vehicles using a stacking method instead of the usual “jelly roll” method.
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