Launch engine car (Discovery 3)

ATTENTION: While it is not recommended that a vehicle is jump started, it is recognized that this may occasionally be the only practical way to mobilize a vehicle. Reference should be made to the following and also to the Electrical Section of this manual - Jump Starting.

ATTENTION: It is advisable not to use starter/charger sets for jump starting but if this is unavoidable, ensure that the sets are not used in the 'START' mode.

Always make sure that the jumper cables are adequate for the task.
Always make sure that the slave battery is of the same voltage (12 volts) as the vehicle battery. The batteries must be connected in parallel.
Ensure that the battery terminals of both batteries are fully tightened.
Where another vehicle is used to jump start a disabled vehicle, ensure that the two vehicles are not touching.
It is advisable that the engine of the donor vehicle is switched off during jump starting; take care to ensure that the battery of the donor vehicle does not also become discharged.
Always make sure that switchable electric circuits are OFF before connecting jump cables. This reduces the risk of arcing occurring when the final connection is made.

Following jump starting of a disabled vehicle, the discharged battery must be checked for serviceability and recharged as soon as possible to avoid permanent damage.

Do not rely on the generator to restore a discharged battery. For a generator to recharge a battery, it would take in excess of eight hours continuous driving with no additional loads placed on the battery.

Trickle charging (defined as voltages ＜16 volts) may be carried out with the battery connected. Ensure that the battery terminals are fully tightened prior to trickle charging.