Opel COMBO Owner's Manual page 220

218 Vehicle care
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Laying up the vehicle for more than
four weeks can lead to battery
discharge. Disconnect the clamp from
the negative terminal of the vehicle
battery.
Ensure the ignition is switched off
before connecting or disconnecting
the vehicle battery.
Battery discharge protection 3 131.
Replacing the vehicle battery
Note
Any deviation from the instructions
given in this section may lead to
temporary deactivation or
disturbance of the stop-start system.
When the vehicle battery is being
replaced, please ensure that there
are no open ventilation holes in the
vicinity of the positive terminal. If a
ventilation hole is open in this area, it
must be closed off with a dummy cap,
and the ventilation in the vicinity of the
negative terminal must be opened.
Ensure that the battery is always
replaced by the same type of battery.
The vehicle battery has to be
replaced by a workshop.
Stop-start system 3 149.
Charging the vehicle battery
9 Warning
On vehicles with stop-start
system, ensure that the charging
potential does not exceed 14.6 V
when using a battery charger.
Otherwise the vehicle battery may
be damaged.
Jump starting 3 244.
Warning label
Meaning of symbols:
● No sparks, naked flames or
smoking.
● Always shield eyes. Explosive
gases can cause blindness or
injury.
● Keep the vehicle battery out of
reach of children.
● The vehicle battery contains
sulphuric acid which could cause
blindness or serious burn
injuries.