Extended battery will approximately double the usage time of your smart phone. Custom door comes with your purchase to accommodate the larger capacity battery. When you get the battery, please FULLY charge it up and use it until the phone completely dies/shuts off. Then immediately charge the phone, while it is off for 10-12 hours. After about 3-4 cycles your battery indicator will recognize that you have more capacity and will adjust accordingly. This process is not giving you more battery life, it is calibrating the indicator. Please check out our custom TPU extended battery cases. We are constantly developing new models.
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