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Battery Testing

Batteries are such an integral part of vehicles that we recommend to check your battery and electrical system regularly, not just when it’s beginning to show signs of weakness. Proactively testing it twice a year will help reduce your chances of failure.

Fully charged batteries should measure at 12.6 volts or above. When the engine is running, this measurement should be 13.7 to 14.7 volts. You can do a test of your electrical system by starting the car and turning on the headlights:

  • If they’re dim, this indicates the lights are running off the battery and little or no charge is being produced by the alternator.

  • If the lights get brighter as you rev the engine, it means the alternator is producing some current, but might not be producing enough at idle to keep the battery properly charged.

  • If the lights have normal brightness and don’t change as the engine is revved, your charging system is perhaps functioning normally.

If the headlight test checks out okay, the battery may not be holding a charge, or something on the vehicle is discharging it. Give our expert team a call on 0424 299 970 and we can find out what the issue is with a battery test.



We Strive to be your go-to company when you need a car battery replacement in Sydney:

  • Available 24 Hours / 7 Days a Week

  • We'll Come To You - Anywhere in Sydney

  • FREE Delivery & Install

  • Up to 36 Months Warranty

  • No Joining Fees or Annual Fees

  • Lowest Prices or we'll beat it by 10%

  • 40 min Fast Response & Professional

  • Free Battery Disposal

At Battery Rush, we offer free battery testing to check the current health of your battery as part of our battery replacement service. Our expert team have the latest in testing and diagnostic equipment. Our technicians use battery testers hooked up to your current battery to give you an accurate report on your:

  • Charging systems

  • Starter Motor

  • Bad cells detection

  • Current state of battery charge and temperature

Give our expert team a call on 0424 299 970 and we can come to you to provide a free battery test as part of the battery replacement service. Battery Rush will get you moving again.

Battery Test Health Check Instruction Video

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