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 more money 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
5.0·52 Google reviews
The service I received from Sami was top notch, very quick and efficient with good pricing.. I have no problems recommending the Sami and team for your next new battery requirements.
very happy with sami, very good to know even after hours he will be of service, 100% recommend
Family company, second hand battery for my commodore as new for a very good price. Lovely local family run business, will definately. Thanks Guys!
Very nice people here, no fuss. Thank you Sami
Had the unpleasant task of being stuck with a flat (also dead and gone) battery today and made a call to Car Battery Perth 24/7. They were absolutely brilliant, got to me within 15 minutes and barely 5 minutes later had completed all scans and the battery replacement. Very fair pricing and only charged me for the battery, nothing else. Would absolutely recommend!
Wonderful service
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 money 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?
It depends on your car's exact battery spec. Standard passenger car batteries are our most affordable option, supplied and fitted on-site; AGM and stop-start batteries cost more depending on spec. 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 — call us with your rego for an exact price.
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