KTM 390 Duke Series 2019 Owner's Manual page 177

Main work
–
Connect battery charger to the 12-V battery. Switch on battery
charger.
Battery charger (58429074000)
In addition, this battery charger can be used to test the open-
circuit voltage, the starting ability of the 12-V battery, and
the alternator. It is impossible to overcharge the 12-V battery
using this device.
Info
Never remove cover
Charge the 12 V battery to a maximum of 10 % of the
capacity specified on battery housing
–
Switch off the battery charger after charging and disconnect
from the 12-V battery.
Guideline
The charging current, charging voltage, and charging time
must not be exceeded.
M00729-10
Recharge the 12-V battery
regularly when the motorcy-
cle is not being used
–
Position the negative cable and mount and tighten the screw.
–
Position the negative terminal cover.
ELECTRICAL SYSTEM 15
1
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2
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3 months
175