Mophie powerstation 1X User Manual page 9

Priority+ pass-through charging (powerstation
3X and powerstation 2X models)
powerstation 3X and powerstation 2X batteries
have Priority+ pass-through charging, which
enables pass-through charge and sync when
the powerstation battery is recharging from a
computer. Your connected device recharges first,
then the powerstation battery recharges. Connect
your device to the powerstation battery USB port
that is marked with the Priority+ charging icon:
Although the powerstation 3X battery can charge
two devices simultaneously, it can only charge
one device while it is being recharged. Connect
the device to the powerstation 3X USB port that
is marked with the Priority+ charging icon. (The
other USB port is shut off while the powerstation 3X
battery is being recharged.)
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