Battery Life

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  • Official comment
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    VSN Mobil Support

    The V.BTTN device periodically measures battery level using A/D built into the BLE chip.   Depending on when the measurement is taken, the result could be affected by battery droop due to the buzzer, LED and/or BLE chip being active.  The measurement result thus could vary from reading to reading.  

    So to avoid user confusion, we recommend you design the app to display battery level as a range (e.g. using color code) and not display a numerical percentage.

    Recommended range

    Good/Green > 20%

    Low/Yellow — 10% to 20%

    Critical/Red  < 10%

     

    We also recommend your app should not constantly read the battery level but should use the battery notification characteristic and let the V.BTTN notify your application when there is a change in the battery percentage.

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