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Winter

How Cold, Wet Winters Affect Your Battery in the Lower Mainland

Vancouver does not get the deep freezes some regions do, but cold, damp weather is still one of the toughest conditions for a car battery.

What the cold does

Battery chemistry slows down as temperatures fall. A battery at 0°C delivers noticeably less cranking power than the same battery at 20°C. At the same time, cold engine oil is thicker and makes the starter work harder, so the engine asks for more from a battery that already has less to give.

Why short trips make it worse

Much of Metro Vancouver driving is stop-and-go. Short trips with the heater, wipers, lights and defrost on do not give the alternator enough time to fully recharge the battery after starting. Over a few weeks, the battery runs lower and lower.

Why the first cold snap is the dangerous one

A marginal battery can seem fine all autumn and then fail completely the first time the temperature drops. A quick load test before winter catches that before it becomes a no-start morning.

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