Battery light on the dash
Almost always charging-system, not battery. We confirm and refer if needed.
Battery · Alternator · Starter · Earth
Alternator or Battery? Mobile Test in Perth
Replacing the battery when the alternator is the problem is the single most expensive mistake people make. We test the whole charging system before recommending anything.
CALL NOW (08) 9456 4378Avg response: 30 minutes
- Full charging system check
- Battery conductance + alternator output
- Voltage drop & ground tests
- Honest answer, on-site, no upsell
24/7
Same number, same techs
On-site
No tow, no drop-off
3-yr warranty
Nationwide
5.0★ Google
39 reviews
Wherever you're stuck, we'll come to you
We do roughly half our work in driveways, a third in office and business-park carparks, and the rest on roadsides and in shopping centres across the Perth metro.
Just had a new battery, still problems
Often a charging-system issue that killed the new battery. We diagnose properly.
Random no-starts
Could be either. Full diagnostic in 10 minutes settles it.
Why people call us first
Symptoms of a dying battery and a dying alternator look identical from the driver's seat — slow cranks, dim lights, sometimes the car won't restart after a stop. Throw a new battery at an alternator problem and you'll be back in a week with a dead battery and an extra $300 down.
We test both. Alternator output under load, battery conductance, voltage drop, starter draw, ground integrity — the whole charging picture in 10 minutes. Then we tell you exactly what to fix. If it's the battery, we do it on the spot. If it's not, we'll point you at a trusted Perth auto-electrician.
What we bring on every job
- Battery conductance + load testing
- Alternator output under load
- Voltage drop and ground checks
- Referral to trusted auto-electrician if needed
Verified by Google
Real Perth customers, real Google reviews
5.0from 39 Google reviews
Eric Yu
a month ago
Fast and cheap
P .p
a month ago
Quick and timely service on a public holiday saved a lot of hassle for me the day after. Keep up the good work
Vishal
a month ago
Best service to replace battery
Adam Bordas
3 months ago
Great service, came on time, great price, very happy
Nicolas Lozano
4 months ago
Excellent service quick fitting I’ll be back in future definitely
Sherilyn Wong (Alestraia)
5 months ago
Very sweet technician, absolutely pleasant experience. He even helped me bicarb the floor where my battery leaked acid to protect the driveway. Fair prices and quick efficient work. 10/10. These guys will be my go to for battery repairs from now on.
Frequently asked questions
What if it's not the battery — alternator or starter?
Our techs carry full diagnostic gear. We test the battery, alternator output and starter draw on-site before we replace anything. If the battery is healthy and the alternator is the problem, we'll tell you straight up so you don't waste $300 on the wrong part.
What if it turns out to be the alternator?
We'll confirm it on-site and refer you to a trusted Perth auto-electrician. Battery test is free if we don't replace — no time-wasted fee.
How fast can you actually get to me in Perth?
Average response is 30 minutes anywhere in the Perth metro, day or night. CBD and inner-suburb call-outs are usually 15–20 minutes. Outer metro (Mandurah, Two Rocks, hills suburbs) can be 45 minutes — we'll give you a real ETA when you call, not a guess.
How much does mobile battery replacement cost?
Standard passenger car batteries start at $189 supplied and fitted on-site. AGM and stop-start batteries are more depending on spec — typically $260–$420. There's no call-out fee and no extra charge for after-hours, weekends or public holidays. We quote on the phone before we head out.
What warranty comes with the new battery?
All standard batteries come with a 3-year nationwide warranty. AGM and stop-start batteries are 3–4 years depending on brand. The warranty is honoured at any Century / SuperCharge stockist Australia-wide, not just by us.
Stuck right now? One phone call, one fixed price, sorted in 30 minutes.
CALL NOW (08) 9456 4378