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BQ27411-G1: what does the unit of Taper rate .1 hour rate mean ?

Part Number: BQ27411-G1

The uint of Taper rate is  .1 hour rate .  what does it  mean?

  • Hi Feiyue,
    Referencing the qsg app note below:
    www.ti.com/.../sluuah7b.pdf


    Taper Rate should be set to the current threshold in mA below which your charger IC is set to stop
    charging once it considers the battery to be full. The Taper Rate is stored in units of 0.1-hr rate and can
    be derived from the taper current value in mA by the following equation:

    Taper Rate = Design Capacity / (0.1 * Taper Current)

    This is simply a way to store the taper current value with respect to Design Capacity. The Taper Rate
    value allows the gauge to synchronize its full charge detection point with that of the charger. The gauge
    Taper Rate should be set to a value slightly higher than the taper current detection threshold of the
    charger (including charger tolerances)

    thanks
    Onyx