Battery died on a fast road?
If the car stops on the Ring Road or the Princes Freeway, get it as far off the road as you can, switch the hazard lights on and wait well away from the traffic. A jump start on the shoulder of a 100 km/h road isn't worth the risk: wait for roadside assistance or a tow. If anyone is hurt or in danger, call 000.
What wears a battery out around Geelong
Hot summer days
Geelong's hottest month is February, and its record is 47.4 degrees, set on 7 February 2009. RACV says hot weather weakens a battery, and suggests parking in the shade or a garage when you can.
Cold winter mornings
July is Geelong's coldest month, with a record low of minus 4.3 degrees. Cold weakens a battery too, which is why a tired one so often shows itself with a slow crank on a winter morning.
The car at the beach house
If a car lives at a holiday house on the Bellarine or down at Torquay and sits for weeks between visits, expect the battery to suffer. RACT says cars left unused, or used mostly for short trips, will likely see a battery fail sooner, and NRMA says even a locked car keeps a drain on it.
Short hops and the Melbourne run
RACV says trips under 20 minutes don't give the alternator time to put back what the start took out. A car that only goes from Highton to the shops is in that group; one doing the 75 km freeway run to Melbourne usually isn't.
Is it the battery or the alternator?
Slow cranking and dim dash lights can mean either. RAC WA says a multimeter test separates the two, and RAA says that when the battery light comes on, the cause is usually the car's electrical system rather than the battery. Ask for both to be tested before you pay for a new battery.
Across Victoria, RACV's patrols attended over 290,000 battery callouts in one year, it reported in June 2023. A test before winter is the simplest way to stay out of that count.
Why the type of battery matters
RACV says a replacement should have the same or a higher cold cranking amps (CCA) rating, the same size and the terminals in the same place. Cars with stop-start often need an AGM battery, which RACV says generally lasts five to seven years, though stop-start use can shorten it.
Some newer cars need the battery registered to the car's computer after it's fitted, RAC WA says, and RACT notes some European cars have a second, hidden battery. A mechanic who works on your make will know.
What the written estimate should show
- The battery type (standard or AGM) and its CCA rating, matched to the car.
- Whether the charging system was tested, and what it showed.
- Any reset or battery registration the car needs.
- That the old battery goes to recycling, not the bin.
Where we'd start
We'd have it tested in autumn, before the cold mornings, once it's past three years old. If the car is stuck at a holiday house and won't start, we'd pick "Come to me" with that postcode, and say how long it's been sitting. Victoria has no mechanic licence, so ask a mobile mechanic for the ABN before they start.