PEUGEOT 2008 Handbook page 162

In the event of a breakdown
If this label is present, it is essential to
use only a 12 V charger to avoid causing
irreversible damage to the electrical
components related to the Stop & Start
system.
Never try to charge a frozen battery – risk
of explosion!
If the battery has frozen, have it checked
by a PEUGEOT dealer or by a qualified
workshop who will check that the internal
components have not been damaged and
that the container has not cracked, which
would mean a risk of toxic and corrosive
acid leaking.
Disconnecting the battery
In order to maintain an adequate state
of charge for starting the engine, it is
recommended that the battery be disconnected
if the vehicle is taken out of service for a long
period.
Before disconnecting the battery:
160
F close all openings (doors, boot, windows,
etc.),
F switch off all electrical consumers (audio
system, wipers, lighting, etc.),
F switch off the ignition and wait for 4 minutes.
At the battery, it is only necessary to
disconnect the (+) terminal.
Quick-release terminal clamp
Disconnecting the (+) terminal
F Raise lever A fully to release clamp B.
F Remove clamp B by lifting it off.
Reconnecting the (+) terminal
F Raise lever A fully.
F Refit open clamp B on the (+) terminal.
F Push clamp B fully down.
F Lower lever A to lock clamp B.
Do not force the lever as locking will not
be possible if the clamp is not positioned
correctly; start the procedure again.