IMPORTANT INFORMATION
Battery Percent Charge Information on SEVCON Display
The Battery charge level indicates the relative state of charge of the Traction
Battery and NOT the remaining driving range of the vehicle.
Its algorithm is based on the PEAK Traction Battery Pack Voltage, which in
turn calculates the APPROXIMATE charge of the Traction Battery.
The indicator may not always show 100% when the vehicle is first turned on
even if the On-Board Delta-Q charger indicates 100% or full charge condition.
(Green LED ON – see Charging Procedure in Owner Manual for more detail).
This condition is not a defect as the computerized “smart” Delta-Q On-Board
Charger may under certain conditions stop the charging before achieving the
maximum potential voltage.
The ambient and battery temperatures are monitored by the charger and the
charge cycle is automatically terminated based on internal charge algorithm
that is matched to the specific type of Battery, which is used in your vehicle.
The charge algorithm is designed to maximize the battery life and to prevent
battery damage by overcharge.
Initially when the vehicle is FIRST driven after delivery or whenever Traction
Battery is serviced, the vehicle MUST be driven so that a discharge level of
69% or less is achieved, and the Traction Battery MUST BE FULLY
CHARGED thereafter, in order for the State of Charge bar graph indicator in
the SEVCON Display to self reset to 100% indication.
If the Traction Battery is not deeply discharged (to below 69%) the State of
Charge will generally not indicate more than 80% even if the On-Board Delta-
Q Charger indicates FULLY Charged condition.
For long battery service life, the vehicle should not be operated when the
indicated Charge Level is 20% or less, and need not to be re-charged if the
Display Indication is 80% or more.
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