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10 Maintenance and service
10
366
Location of the batteries
A: Left-hand drive car. B: Right-hand drive car. (1) Starter battery14
 (2) Support battery.
The support battery normally requires no more service than the normal battery used forstarting. A workshop should be contacted inthe event of questions or problems - anauthorised Volvo workshop is recommended.
IMPORTANT
If the following instruction is not observed then the Start/Stop function may tempo-rarily cease to work after the connection ofan external battery or battery charger:
• The negative battery terminal on the car's starter battery must 
never be
used for connecting an external bat-tery or battery charger - only the  car
chassis  may be used as the ground-
ing point.
See Jump starting with battery (p. 270) for a description of how the cable clampsmust be attached.
NOTE
If the battery has become so discharged that everything is "black" and in principlethe car does not have all the normal elec-trical functions and the engine is subse-quently started using an external battery orbattery charger, then the Start/Stop func-tion will be activated. It will then be possi-ble for the engine to be auto-stopped butin the event of an auto-stop the Start/Stopfunction may fail to auto-start the enginedue to inadequate capacity in the battery. The battery must first be charged in order to ensure a successful auto-start after anauto-stop. At an outside temperature of+15 °C the battery needs to be charged forat least 1 hour. At a lower outside tem-perature a charging time of 3-4 hours isrecommended. The recommendation isthat the battery is charged using an exter-nal battery charger. If this is not possible then the recommen- dation is to temporarily deactivate theStart/Stop function until the battery hasbeen adequately recharged. For more information on charging the starter battery, see Battery (p. 361).
Related information
• Battery - symbols (p. 362)
14
See Battery (p. 361) for a detailed description of the starter battery.
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11 Specifications
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410
Electrical system
The electrical system is single-pole and uses the chassis and engine casing as a conductor. The car has a voltage-regulated AC alterna- tor. Starter battery capacity is dependent upon the equipment level in the car.
IMPORTANT
If the battery is replaced, take care to replace it with a battery with the same coldstarting capacity and reserve capacity asthe original battery (see the label on thebattery).
Related information
•Starter battery - specification (p. 411)
• Starter battery - replacement (p. 363)
• Battery (p. 361)
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11 Specifications
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411
Starter battery - specification
The starter battery is used to drive the starter motor and other electrical equipment in thecar.
EngineVoltage (V)Cold start capacity,
CCA - Cold Cranking Amperes (A)Reserve capacity (minutes)
Petrol (Ethanol)12520–800100–160
Diesel12700–800135–160
Petrol/Diesel with Start/Stop function12760A135
A
Battery type AGM (Absorbed Glass Mat) must be used in cars with the Start/Stop function.
IMPORTANT
If the battery is replaced, take care to replace it with a battery with the same coldstarting capacity and reserve capacity asthe original battery (see the label on thebattery).
NOTE
• The starter battery's container size should be consistent with the originalbattery's dimensions.
• The starter battery's height is differentdepending on size.
Related information
•
Starter battery - replacement (p. 363)
• Battery (p. 361)
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