Battery Protection Mode - Aston Martin DB 9 2010 Manual

To Connect the Battery Conditioner
1. Insert the accessory socket plug (B) into the accessory socket (A).
2. Insert the mains plug (C) into the mains supply.
Gently close, but do not latch,
the trunk lid. This avoids
possible damage to the trunk
water seal from the battery
conditioner power cable.
11.30
With the trunk lid left open the vehicle doors can be locked and
armed (Refer to 'Vehicle Locked - Trunk Lid Open', page 2.9).
To remove the battery conditioner first disconnect from the mains
supply, then from the vehicle accessory socket.

Battery Protection Mode

Replace the battery as soon as possible, if the battery is not
capable of starting the engine.
Using the vehicle electrical systems, i.e. the infotainment system, with
the vehicle key at position 'I' (ignition OFF) will drain the battery
charge. Eventually the battery will drain to such a low level that it will
not start the engine.
To avoid this happening, a series of safety mechanisms shut down
non-essential electrical systems before excessive battery drain takes
place.