Alfa Romeo 2015 4C Owner's Manual page 237

Connecting The Jumper Cables
1. Connect the positive (+) end of the jumper cable to the
positive (+) post of the vehicle with the discharged
battery.
2. Connect the opposite end of the positive (+) jumper
cable to the positive (+) post of the booster battery.
3. Connect the negative end (-) of the jumper cable to the
negative (-) post of the booster battery.
4. Connect the opposite end of the negative (-) jumper
cable to a good engine ground of the vehicle with the
discharged battery (exposed metal part of the engine)
away from the battery and the fuel injection system.
WHAT TO DO IN EMERGENCIES 235
WARNING!
Do not connect the jumper cable to the negative (-)
post of the discharged battery. The resulting electri-
cal spark could cause the battery to explode and
could result in personal injury. Only use the specific
ground point, do not use any other exposed metal
parts.
5. Start the engine in the vehicle that has the booster
battery, let the engine idle a few minutes, and then
start the engine in the vehicle with the discharged
battery.
6. Once the engine is started, remove the jumper cables
in the reverse sequence:
6