Why your car battery keeps going flat in winter

Written By Hayden Brown

Battery testing and replacement at King Street Motors, West Malling, Kent

A flat battery is one of the most common winter problems for local drivers. Learn why batteries fail in cold weather, how short trips around West Malling and Maidstone affect charging, and what you can do to prevent it. King Street Motor Services offers battery testing and replacement.

Cold weather, short journeys, and extra electrical use all put strain on your battery. This is especially common for drivers doing school runs and local commuting around West Malling and Maidstone. At King Street Motor Services, we can test your battery and charging system to help prevent repeated non-starts.

Why batteries go flat more often in winter

  • Cold reduces battery capacity: Batteries produce less power when temperatures drop.

  • Short journeys do not recharge enough: The alternator needs time to replenish the battery.

  • Heaters, lights, demisters: Higher electrical demand drains the battery faster.

  • Ageing battery: Most batteries last around 4 to 5 years.

Simple ways to reduce battery drain

  • Take a longer drive once a week if possible.

  • Turn off heated screens and blowers once the car is warm.

  • Avoid leaving the car unused for long periods.

  • Get the battery tested before it fails completely.

FAQs:

  • How do I know if my battery is failing?
    Slow cranking, dim lights, and repeated jump starts are common signs.

  • Can you test my battery and alternator?
    Yes, we can test both to confirm whether the battery or charging system is the issue.

  • Is it safe to jump start a modern car?
    Often yes, but some vehicles are sensitive. Check your handbook or ask us for advice first.

  • Do electric cars have a normal 12V battery too?
    Yes, many EVs still have a 12V battery that can fail like any other.

  • Should I replace the battery or just recharge it?
    If the battery is old or failing a test, replacement is usually the most reliable option.

Get in touch for servicing, MOT’s, aircon, tyres and more.

We’re here to keep you safe on the roads of West Malling and Kent. Call 01732 843135 or email jjautoskentltd@gmail.com for expert advice and repairs.

Hayden Brown
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