Most UK car batteries last 4–6 years. Cold winters, short journeys and stop-start systems all shorten that. If your car cranks slowly first thing on a frosty morning, the battery is usually the culprit — not the starter motor.
AGM and EFB batteries fitted to stop-start cars cost more (£140–£280 fitted) but last about the same as a standard battery. They're built to handle the constant restart cycles a stop-start engine asks for.
Drova tests battery health on every service visit and replaces on site if needed — no being stranded at home on day one of frost.