Bailey C.
Google review · October 2026
Jay was a great bloke and ultimate professional. He helped replace my battery and battery terminal that had snapped off within 45 minutes of calling him. Definitely recommend!
Battery Brothers · Castle Hill & Sydney Wide
Sydney's 24/7 Mobile Battery Replacement We Come To You
Safe car battery replacement and fast roadside assistance. At home, at work or on the roadside, anywhere in Sydney, day or night. Free testing, free fitting, warranty up to 50 months.
5.0 from 361 Google reviews- 5.0 361 Google reviews
- Open 24/7Nights, weekends and public holidays
- Usually within the hourWe come to you, anywhere in Sydney
- Free testing & fittingBattery, alternator and charging system
- Up to 50 monthsNationwide warranty, depending on battery
- No membershipPay only when you need us
Our Services
Mobile Battery Replacement For Every Vehicle
Cars, trucks, motorbikes, 4WDs, boats and standby generators. One call, and a Battery Brothers van comes to wherever the vehicle is: home, work, depot or roadside.
Car Batteries
Mobile replacement at home, work or the roadside.
Car service →
Truck & Heavy Vehicle
Roadside, depot, yard or worksite, 24V banks included.
Truck service →
Motorbike & Scooter
YTX, YTZ, AGM and lithium, fitted where it is parked.
Motorbike service →
4WD & Caravan
Cranking, dual and deep cycle set-ups for the weekend away.
Shop 4WD batteries →Marine & Boat
Starting and deep cycle batteries delivered to the marina.
Generator
Standby generator cranking batteries, load tested on site.
Commercial Fleets
Scheduled testing and bulk replacement in one visit.
Battery Testing
Free battery and charging-system health check.
Battery Fitting
Fitted right for modern electronics, free with every battery.
Latest Google Reviews
What Sydney Drivers Say
5.0 from 361 reviews on Google
Lynn G.
Google review · September 2026
Outstanding service! Jay came out promptly on a Sunday morning within short notice to replace my dead car battery for my Volkswagen polo and programming it…
Carol K.
Google review · August 2026
Jay was great to deal with. Very professional, quick and efficient. Thank you for your wonderful service Jay!
Harry M.
Google review · October 2026
Great service. Both brothers are friendly and were very quick to respond. Highly recommended.
Suzy H.
Google review · October 2026
My Saab 9-3 wouldn't start....my key got locked up in the ignition...my world was crumbling!! Jay to the rescue! Truly relieved my anxiety very quickly. Thank you so much…
Jacky Z.
Google review · August 2026
Excellent pricing, very personable and extremely satisfied with Jay's service. Highly recommend Battery Brothers!
Nimi & Co.
Google review · September 2026
Absolutely phenomenal service. Jay was efficient and friendly with honest advice and direction. Definitely recommend their services
Wei L.
Google review · September 2026
Jay has been very helpful in changing the flat battery promptly afterhours and include programming as well. Good AGM battery.
Paul B.
Google review · September 2026
Jay's a lovely guy from battery brothers and I couldn't be happier I shopped around came here and got a good deal
Todd B.
Google review · September 2026
They went out of there way to provide after sale service with instalation. Friendly service from the start.
Ahmed H.
Google review · August 2026
Great service from Dylan, quick and easy.
Adam B.
Google review · August 2026
Great price and easy to order
Heng W.
Google review · October 2026
perfect service with reasonable price
Luke P.
Google review · August 2026
Excellent, excellent, excellent
Limited Time
On Sale Now
Genuine batteries at a lower price, fitted free across Sydney.
Best Sellers
Popular Car Batteries
Our best sellers, with prices straight from the store. Order online, or call and we will fit it for you.
How A Callout Works
Four Steps, One Visit
Most jobs are finished the first time we arrive, because the van already has your battery on it.
- 01
You Call
A real person answers, 24 hours a day. Tell us where you are and what you drive, and you get an honest arrival time.
- 02
We Come To You
Home, work, the shopping centre car park or the roadside. The vehicle never has to move.
- 03
We Test First
Battery, alternator and charging system, free, so you only pay for a battery if you actually need one.
- 04
Fitted And Gone
The right battery fitted on the spot, your old one recycled free, nationwide warranty on every unit.
Price Guide
How Much Does a Car Battery Cost?
The price of a car battery depends on your vehicle and the quality of battery it needs. Every price includes free fitting and free testing, and you get a firm price before any work starts.
From$195
Small Cars
Quality batteries with a 2-year warranty
From$244
Larger Cars & SUVs
Heavy-duty options with a 3-year nationwide warranty
ForAGM
Modern & Stop-Start Vehicles
AGM and EFB batteries built to work with battery monitoring systems
Why avoid cheap batteries? They may look like a bargain but often last only 12 months, so you pay again sooner. Every battery we sell meets or exceeds OEM standards and carries a nationwide warranty.
Find The Right Battery
In stock at Castle Hill
Google Reviews
5.0
Rated 5.0 by 361 Sydney customers
Every review is on our Google Business Profile, Battery Brothers Castle Hill.
Read Our Reviews- Real people answerAny hour, never a call centre
- Honest testingBattery fine? We tell you
- Open 24/7Nights, weekends, holidays
- Local to Castle HillA real store you can walk into
- Genuine stockDate-stamped, every major brand
- Old battery recycledFree, on every job
Areas We Service
Mobile Car Battery Replacement Sydney-Wide
No matter where you are in the city, Battery Brothers is a phone call away. 196 suburbs from the Hills to the Shire, with no distance surcharge.
Hills & North West
Western Sydney
South West
North Shore
East, City & Inner West
St George & Shire
All Car Suburbs
Find your suburb →Hills & North West
Western Sydney
South West
North Shore
East, City & Inner West
St George & Shire
All Truck Suburbs
Find your suburb →Hills & North West
Western Sydney
South West
North Shore
East, City & Inner West
St George & Shire
All Motorbike Suburbs
Find your suburb →Hills & North West
- Castle Hill
- Baulkham Hills
- Kellyville
- Rouse Hill
Western Sydney
- Parramatta
- Blacktown
- Penrith
- Fairfield
South West
- Liverpool
- Campbelltown
- Camden
- Cabramatta
North Shore
- Hornsby
- Chatswood
- North Sydney
- Epping
East, City & Inner West
- Sydney CBD
- Bondi
- Randwick
- Marrickville
St George & Shire
- Hurstville
- Bankstown
- Sutherland
- Cronulla
All Industrial Generator Suburbs
Find your suburb →Hills & North West
- Castle Hill
- Baulkham Hills
- Kellyville
- Rouse Hill
Western Sydney
- Parramatta
- Blacktown
- Penrith
- Fairfield
South West
- Liverpool
- Campbelltown
- Camden
- Cabramatta
North Shore
- Hornsby
- Chatswood
- North Sydney
- Epping
East, City & Inner West
- Sydney CBD
- Bondi
- Randwick
- Marrickville
St George & Shire
- Hurstville
- Bankstown
- Sutherland
- Cronulla
Boat Battery Services, Sydney-Wide
We come to you anywhere in Sydney, day or night.
View the service →Hills & North West
- Castle Hill
- Baulkham Hills
- Kellyville
- Rouse Hill
Western Sydney
- Parramatta
- Blacktown
- Penrith
- Fairfield
South West
- Liverpool
- Campbelltown
- Camden
- Cabramatta
North Shore
- Hornsby
- Chatswood
- North Sydney
- Epping
East, City & Inner West
- Sydney CBD
- Bondi
- Randwick
- Marrickville
St George & Shire
- Hurstville
- Bankstown
- Sutherland
- Cronulla
Hills & North West
- Castle Hill
- Baulkham Hills
- Kellyville
- Rouse Hill
Western Sydney
- Parramatta
- Blacktown
- Penrith
- Fairfield
South West
- Liverpool
- Campbelltown
- Camden
- Cabramatta
North Shore
- Hornsby
- Chatswood
- North Sydney
- Epping
East, City & Inner West
- Sydney CBD
- Bondi
- Randwick
- Marrickville
St George & Shire
- Hurstville
- Bankstown
- Sutherland
- Cronulla
Visit Us
Battery Brothers Castle Hill
Walk in for a free battery test, pick up a battery, or have it fitted on the spot. Or stay where you are and we will come to you.
3/334 Old Northern Rd, Castle Hill NSW 2154
- Address
- 3/334 Old Northern Rd, Castle Hill NSW 2154
- Phone
- 1300 232 173 · 0440 135 796
- Hours
- Mobile service 24 hours, 7 days
Questions
Mobile Battery Replacement FAQs
The ones we are asked most. Tap a question to see the answer.
How much does a car battery replacement cost in Sydney?
It depends on your vehicle and the battery it needs. Quality batteries for small cars start from $195 with a 2-year warranty, and heavy-duty options for larger cars and SUVs start from $244 with a 3-year nationwide warranty. Fitting and battery testing are free, and you get a firm price before any work starts.
Do you come to me?
Yes. Our mobile team comes to your home, workplace, car park or the roadside anywhere in the Sydney metropolitan area, 24 hours a day, 7 days a week. No membership is needed. You only pay when you need us.
How quickly can you get to me?
Usually within the hour. It depends on traffic and where you are, and we give you an honest arrival time when you call. Our vans carry the common battery sizes, so most jobs are tested and fitted on the same visit.
Do you test the battery before replacing it?
Yes. Every callout starts with a free test of the battery, alternator and charging system. A flat battery is often a symptom rather than the fault, and you only pay for a battery if you actually need one.
What warranty comes with a new battery?
Every Battery Brothers car battery comes with a nationwide roadside warranty of up to 50 months, depending on the battery you choose.
Do you only replace car batteries?
No. We also replace truck, motorbike and scooter, 4WD, caravan, marine and boat, and standby generator batteries, and look after commercial fleets with scheduled testing and bulk replacement.
Do you take my old battery?
Yes. Your old battery is taken away and recycled free of charge on every job.
Where is your store?
Battery Brothers is at 3/334 Old Northern Rd, Castle Hill NSW 2154. Call 1300 232 173 any time, day or night, and we will come to you.
Still got a question? We answer 24 hours a day.
Battery Know-How
Your Car Battery, Explained
Most drivers do not think about their battery until it is dead. Six things worth knowing before that happens.
The Basics
How does a car battery work?
It is the heart of your car's electrical system.
- Battery sends power
- Starter motor cranks
- Engine runs
- Alternator recharges the battery
It also powers the ignition and fuel system, and the alternator keeps it topped up while you drive.
Warning Signs
Signs you need a new car battery
- Slow or no start. Capacity drops with age until it cannot crank the engine.
- Battery warning light. Something in the battery or charging system is wrong.
- Dim lights, flickering electrics. The battery is struggling to supply power.
What Drains It
What affects your battery's charge?
- Short trips. The alternator never gets time to recharge it fully.
- Heat and cold. Heat shortens battery life; cold slows the chemistry.
- Poor fitting. Modern cars are technical, and a bad install can damage electronics.
Buying Tips
Choosing the right car battery
- Right size. It must sit tight in the tray so vibration cannot damage it.
- Under 6 months old. Check the date code before you buy.
- Good reserve capacity. A higher RC keeps essentials running if the alternator fails.
Speed
How quickly can you replace it?
~1hour
We come to you, test the battery and replace it if needed, usually within an hour. No membership fees: you only pay when you need us.
Call 1300 232 173 →Warranty
Do your batteries have a warranty?
up to50months
Every Battery Brothers car battery carries a nationwide roadside warranty, depending on the battery, and it covers you wherever you go.
See popular batteries →Battery dead? We are already awake.
24/7 mobile battery replacement across Sydney. Free testing, free fitting, nationwide warranty, old battery recycled free.
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