Aston Martin DB11 Owner's Handbook Manual page 240

Battery Information
Battery Warnings
Warning: Do not allow flames, sparks or lighted
substances to come near the battery. Batteries normally
produce explosive gases when charged or when jump
started. When working near the battery, always make sure
that neither you nor the battery is electrostatically charged.
Always have sufficient ventilation.
Warning: Never place metal objects on the battery or
allow the positive terminal of the battery to contact parts of
teh vehicle body. This can create a spark or a short circuit
which can ignite gases created when the battery is charged.
Warning: When lifting a plastic cased battery, excessive
pressure on the end walls could cause acid to flow through
the vent caps, resulting in personal injury, damage to the
vehicle or battery. Lift the battery with a battery carrier or
with your hands on opposite corners.
Warning: Keep batteries out of reach of children.
Warning: Batteries contain sulphuric acid. Avoid contact
with skin, eyes or clothing. Shield your eyes when working
near the battery to protect against possible splashing of acid
solution. In case of acid contact with skin or eyes, flush
immediately with water for a minimum of 15 minutes and
get prompt medical attention. If acid is swallowed, get
medical help immediately.
12.38
Maintenance and Technical Data
Caution: The engine must never be run with the vehicle
battery disconnected. This can cause damage to vehicle
electrical modules.
Caution: Apart from vehicle recovery, this vehicle must
not be driven if the vehicle battery is incapable of starting the
engine. In this case the vehicle battery must be replaced.
Contact your Aston Martin Dealer.
Warning: Battery posts, terminals and related accessories
contain lead and lead compounds. Wash hands after
handling.