Mobile Car Battery Replacement

Mobile Car Battery Replacement Poole

The benefits of Mobile Car Battery Replacement Warrington

To determine whether your car needs a new battery, you can check for several indicators. Here’s a step-by-step guide to help you diagnose the condition of your car battery:

Signs Your Car Battery Might Need Replacement:

  1. Age of the Battery:

    • Car batteries typically last between 3 to 5 years. If your battery is older than this, it might be time for a replacement.
  2. Difficulty Starting the Engine:

    • If your car is slow to start or requires multiple attempts to turn over, the battery could be weak.
  3. Dim Headlights and Electrical Issues:

    • Dim headlights, flickering interior lights, or problems with the radio and other electrical components can indicate a failing battery.
  4. Battery Warning Light:

    • If the battery or charging system warning light on your dashboard is illuminated, it could mean your battery is not charging properly.
  5. Corrosion on Battery Terminals:

    • Check for a white, ashy substance on the battery terminals. Corrosion can interfere with the battery’s performance and might be a sign of a failing battery.
  6. Swollen Battery Case:

    • If the battery case looks swollen or bloated, this can indicate a bad battery.
  7. Unusual Smells:

    • A rotten egg smell coming from the battery can indicate a leak or other issue.

Testing the Battery:

  1. Voltage Test:

    • Use a multimeter to test the voltage of the battery. A fully charged battery should read about 12.6 volts or more when the car is off. With the engine running, it should read between 13.7 and 14.7 volts.
  2. Load Test:

    • Many auto parts stores offer free battery load testing. This test assesses the battery’s ability to hold a charge under load.
  3. Professional Diagnosis:

    • If you’re unsure, take your car to a mechanic or an auto parts store for a professional battery test.

Steps for Testing with a Multimeter:

  1. Set Up the Multimeter:

    • Set the multimeter to 20V DC (direct current).
  2. Connect the Multimeter Probes:

    • Connect the red probe to the positive battery terminal and the black probe to the negative terminal.
  3. Read the Voltage:

    • With the car off: A reading of 12.4 to 12.7 volts indicates a healthy battery. Below 12.4 volts indicates a partially charged battery, and below 12.0 volts indicates a discharged battery.
    • With the car running: A reading between 13.7 to 14.7 volts indicates the alternator is charging the battery properly.


  • Battery Replacement: If your battery is older than 3-5 years, shows signs of physical damage or corrosion, or fails voltage and load tests, it’s likely time for a new battery.
  • Jumpstart: If the battery is relatively new but the car won’t start, try a jumpstart. If the car starts and runs after a jumpstart, but then fails to start again after being turned off, the battery may not be holding a charge.

If you still experience issues after these checks, consult a professional mechanic to ensure there are no other underlying electrical problems.

Mobile Tyre Fitting

How Mobile Car Battery Replacement Warrington


Determining whether you need a jumpstart or a new battery for your mobile (presumably a car) involves a few steps to diagnose the issue. Here’s what you can do to assess the situation:

Step 1: Check for Signs of Battery Issues

  1. Dim Lights: When you turn on your car, are the headlights dim? This can indicate a weak battery.
  2. Slow Crank: Does the engine crank slowly when you try to start the car?
  3. Electrical Issues: Are there issues with electrical components, such as the radio or dashboard lights?

Step 2: Attempt a Jumpstart

  1. Safety First: Ensure both vehicles are off and the keys are removed.
  2. Connect Cables: Attach the red (positive) cable to the positive terminal of the dead battery and the other red end to the positive terminal of the good battery. Attach the black (negative) cable to the negative terminal of the good battery and the other black end to an unpainted metal surface on the engine block or chassis of the dead car.
  3. Start the Working Car: Let it run for a few minutes.
  4. Start the Dead Car: Attempt to start the car with the dead battery.

Step 3: Evaluate After Jumpstart

  1. Successful Start: If the car starts, let it run for at least 20 minutes to charge the battery. If the car dies shortly after, the battery may not hold a charge.
  2. No Start: If the car does not start, the battery may be completely dead, or there may be another issue.

Step 4: Consider Battery Replacement

  1. Age of Battery: Car batteries typically last 3-5 years. If your battery is older, it may be time for a replacement.
  2. Frequent Jumpstarts Needed: If you frequently need to jumpstart your car, it’s a strong indicator that you need a new battery.
  3. Battery Test: Many auto parts stores offer free battery testing. They can check if your battery is holding a charge properly.


  • Jumpstart: Try a jumpstart first if your battery is relatively new and you haven’t had frequent issues.
  • New Battery: If the battery is old, or if a jumpstart fails to keep the car running, you likely need a new battery.

If you’re still unsure, visiting a professional mechanic for a thorough diagnosis would be a good idea.

The Service

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  • Mobile Car Battery Replacement Poole


Rescuemate Technology Ltd
1-4 Falkland Square,
Poole BH15 1ER

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