KTM 390 Adventure 2020 Owner's Manual page 205

Main work
–
Connect a battery charger to the 12-V battery. Switch on the
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 16
1
.
2
.
3 months
203