According to a recent leak, the Galaxy S9 owns only a little more battery than the Galaxy S8.
At first glance, the Galaxy S9 will be the first Samsung model to come equipped with Quick Charge 3.0. This is a very good news for fans and users of the company.
In addition, the Galaxy S9 model also owns a 3200mAh battery, slightly larger than the Galaxy S8 (only 3000mAh battery). Many believe that the Galaxy S9 + will also have the same upgraded battery capacity as the standard version.
However, Samsung has not officially received this information yet so we can not trust it fully. But because the overall Galaxy S9 is a bit thicker, increasing the battery life is absolutely possible.