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Sound Examiner SE-400 Series
7
Charging
The SE-400 Series is charged using the supplied USB charger or a personal computer’s USB port. A fully
depleted battery will require approximately 8 hours to fully charge when using the external battery charger.
Note: 3M recommends charging using the supplied USB charger. Some computers are unable to supply
the required power to charge the SE-400. In such a case, the SE-400 will display the following warning:
"Low USB power to charge".
When charging, the battery indicator will scroll, shading in the indicator. When the battery is fully charged, the
battery indicator will stop scrolling. (See Figure below.)
Charging states
• A fully charged battery state indicates approximately 18 hours of run-time without a backlight for the
non-IS models and 9 hours for IS models.
• A low battery state will display a blinking non-shaded battery icon .
• A charging battery state will appear as if the battery icon capacity is increasing.
Figure 2-3: Charging state for SE-400 Series
Battery indicator:
Charging state: the battery
indicator scrolls until the
battery is fully charged.