Service Overview

A flat battery or a failing alternator is the leading cause of vehicle breakdown. The battery stores the electrical charge needed to start your engine, while the alternator charges the battery and powers your vehicle's electrics while the engine runs. If either component fails, your car will quickly lose power and refuse to start.

FairFix Autos offers emergency mobile battery testing, battery replacement, and alternator fitting. We test your complete starting and charging system on-site, supplying and fitting premium heavy-duty batteries with a 3-year warranty and high-output replacement alternators.

Common Symptoms of Failure

Identify early warning signs that your vehicle requires this service immediately to avoid safety risks or costly engine damage:

• The engine cranks very slowly or produces a clicking sound when starting.
• Battery warning light illuminated on the dashboard while driving.
• Headlights and interior lights dim when the engine is idling.
• The vehicle starts with a jump start but dies shortly after cables are removed.

Our Step-by-Step Diagnostic & Repair Process

All FairFix mobile mechanic work is executed to exact manufacturer specifications. Here is how we complete this job at your location:

System Testing

We use a digital battery analyzer to test cranking amps (CCA), charge state, and evaluate the alternator output voltage under load.

Component Extraction

We disconnect terminals, remove battery brackets, or loosen drive belts to unbolt the faulty alternator.

New Component Fitment

A premium new battery or alternator is installed, securing brackets and adjusting belt tension to specification.

System Coding

On modern vehicles with smart charging systems, we code the new battery to the engine control module to ensure correct charge rates.