BMW R 12 nineT 2023 Rider's Manual page 185

The motorcycle's on-
board electronics know
when the battery is fully
charged. The on-board socket
is switched off when this
happens.
Comply with the operating
instructions of the charger.
If you are unable to
charge the battery
through the on-board socket,
you may be using a charger
that is not compatible with
your motorcycle's electronics.
In this case, charge the battery
via the remote positive terminal
and the remote ground
terminal of the battery.
Charge the battery via the re-
mote positive terminal and
the remote ground terminal.
Switch off the ignition.
( 76)
ATTENTION
Contact between remote
positive terminal and vehicle
Short-circuit hazard
Remove the protective cap
only to permit use of the
remote positive terminal and
re-install the protective cap
after use.
Unclip protective cap 1 from
lock 2 and remove.
Connect remote positive ter-
minal 1 to the positive ter-
minal of the charger.
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