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Incasebatteriesorchargershouldexcessivelyheatupduringcharging(forinstancedue
to high ambient temperatures) or should supply voltage drop dramatically, the charger
will automatically reduce charging power. Charging will then take more time.
Time until full display indicates the time estimated remaining until batteries are
100% charged.
Retrieve current charging status at any moment on the battery display.
Slow charging is engaged for final stages of charge from > 90 % up to 100 %
withextratime.
4.7 Use of 12 V battery
The 12 V battery supplies power to the 12 V on-board electrical system. Moreover, the
12Vbatteryisrequiredtostartthehighvoltageelectricalsystem:itconveystheswitch-
on signal to the high voltage batteries.
Duringnormaloperation,chargingof12Vbatterybymeansofanexternalchargerisnot
necessary. During operation and charging of the DEEP BLUE system, the 12 V battery is
charged from the high voltage lithium battery with up to 10 A.
Ifcurrentsexceeding8Aarerequiredfromthe12Vbatteryfortheon-boardelectricalsy-
stem, we recommend installing a separate 12 V circuit for the on-board electrical system.
In doing so, you avoid an unintentional discharge of the 12 V battery that is integrated
into the DEEP BLUE system (and that is required to switch on the high voltage lithium
batteries).
Ifchargingthe12Vbatterybymeansofanexternalchargershouldbecomenecessary,
disconnect the 12 V battery from the DEEP BLUE system first before connecting the 12 V
batterytoanexternalcharger.
Reference values for charging times until charging level > 90%
Voltage230V,settingofcharger‘spower:100%,ambienttemperature25°C
Number of batteries in the system
2 3 4
Depth of discharge 50 % 04:15 06:25 08:30
Depth of discharge 80 % 06:50 10:15 13:40