The scenario: Picture a Maribyrnong resident on Gordon Street who's had two slow, hesitant starts in a week — the kind where the engine turns over just a little longer than usual before catching. On the third cold morning, the car doesn't start at all, and a neighbour helps with a jump-start on the way to work.
Rather than simply buying a new battery on the assumption it's the obvious culprit, our hypothetical driver books a proper check first. A load test on the existing battery shows it's genuinely at the end of its life — three and a half years old, well within the normal range for a battery that's spent most of its life on short, stop-start trips rather than longer drives that let the alternator fully recharge it.
Just as important: the alternator's charging output is checked at the same time, since a weak alternator can flatten even a brand-new battery within days and make the problem look like it's recurring. In this case, the alternator checks out fine — it really was just the battery reaching the end of a normal lifespan.
What this illustrates: A repeat no-start is worth diagnosing properly rather than guessing — a load test tells you definitively whether it's the battery, and checking the alternator at the same time rules out the more expensive alternative before you spend money on the wrong fix.
For the full breakdown of what to check when a car won't start, see our FAQ: Why Won't My Car Start Even With a Newish Battery? and How Do I Know If My Car Battery Is Dying?
Battery Playing Up on Cold Mornings?
We'll load-test it properly and check the alternator too — not just sell you a new one.