Tesla Battery Replacement - We Come to You
Mobile battery supply & installation at your home, work or roadside across Sydney
Batteries for Tesla Model 3 (2017–present), Model Y (2020–present) & other models – performance-grade AGM/EFB for smart alternators, professionally installed wherever you are.
1800 79 79 77
Get the Best Deal on Tesla
Batteries with Auto Hero
Tesla
Battery Experts
Up to 3 Years
Battery Warranty
24 Month
Workmanship Cover
Mobile Service
We Come To You
Modern Teslas use a 12-volt battery to power critical systems including HVAC, displays and sensors. Auto Hero installs OEM-grade lithium or AGM support batteries for Model 3, Model Y and Model S, ensuring seamless integration with the main high-voltage pack.
Auto Hero — trusted by Tesla owners for expert mobile battery replacement, correct specification batteries and long battery life.
Contact us now for amazing fast service and a competitive quote!
We supply batteries for all
Tesla makes and models
Model 3
Model Y
Model S
Model X
Cybertruck
5 SIGNS YOUR Tesla
battery is dying
What are TESLA-specific signs of a weak battery?
Common signs include warning messages on the screen, the car failing to wake, displays staying blank, or systems like windows and locks not responding. These issues relate to the 12V battery, not the main drive battery.
Can a weak battery affect remote entry or electronics in a TESLA?
Yes. A weak 12V battery can prevent the car from unlocking, reduce phone key or key card responsiveness, and cause infotainment or vehicle systems to behave erratically.
Why does my TESLA crank slowly with a weak battery?
The 12V battery powers the computers that boot the vehicle. If it can’t supply stable voltage, the car may not wake or start up even if the main battery is fully charged.
Are there any TESLA-specific issues when replacing the battery?
Yes. Tesla vehicles require the correct auxiliary battery type and proper replacement procedure. Ignoring warnings or using the wrong battery can lead to repeat failures or fault messages.
What if I only hear clicking when I start my TESLA?
This usually means the 12V battery is weakening. The car may continue to operate for a short time, but the warning indicates the battery should be replaced soon to avoid a sudden no-start situation.
Tesla Battery
Replacement Experts
Car Batteries Supplied, Installed & Registered to Your Tesla’s Computer
Auto Hero supplies and installs premium AGM and lithium 12V auxiliary batteries for the full Tesla lineup — including the Model 3, Model Y, Model S, and Model X — with batteries available for all Tesla models.
Tesla systems demand high-capacity batteries for stable power, even with the engine off.
While Tesla’s main propulsion battery powers the vehicle, the 12V auxiliary battery is responsible for running essential low-voltage systems such as door locks, computers, lights, infotainment, and safety equipment. If the 12V battery fails, your Tesla may be unable to wake the main traction battery, leaving you stranded. That’s why fitting the correct battery — matched to Tesla’s battery management software and charging profile — is critical.
We also service the new lithium 12V designs found in later Tesla models, which require different handling and configuration compared to older AGM types. Whether your Tesla uses AGM or lithium, our mobile service ensures safe, EV-compliant battery replacement without the need for a service centre visit.
Pro Tip:
Many Teslas feature a frunk-mounted auxiliary battery, often located beneath trim panels or air ducting. Our technicians use non-marring tools and protective covers to prevent any cosmetic damage during removal. We also perform software resets and system checks to ensure the vehicle recognises the new battery immediately and charges it optimally.
All Tesla 12V auxiliary batteries come with up to a 3-year warranty, and our installations include a 24-month workmanship guarantee. Our EV-trained mobile team can replace your Tesla battery at home, at work, or wherever your car is parked — ensuring minimal downtime and full system readiness.
Book your Tesla
battery service today
Call 1800 79 79 77.
We come to you.
Why Choose Us?
Rapid
Response
On the job within an hour. Any vehicle, location, time.
Unbeatable
Prices
Competitive vehicle battery prices or 11% OFF
Up to 3 Years
Warranty
Nation wide warranty for genuine, well-known brands.
24/7 Service
Sydney Wide
All day, every day, all across Sydney.
Over 3,150+ Online reviews
Had a flat tyre and Matt came to the rescue. Quick call out, super friendly and he had it changed in no time. Top bloke and great service, would definitely recommend Auto Hero!
Matt went above and beyond to help navigate a difficult problem. Highly recommend to anyone needing auto service.
I really appreciate Matt’s help! He responded quickly and arrived right on time, even on short notice and in Sydney’s heavy rain. My car wasn’t starting and he helped me with a jump start straight away. Reliable, friendly, and professional. I’d definitely recommend him for any job
The service was prompt and reasonably priced. I highly recommend it!
Matt was such a nice and friendly with us and kept professionalism. We had issue with our car window which Matt explained and fixed it within few minutes. The whole process from start to finish was well explained and executive. I strongly suggest to have your car issues solved out with Matt from Auto Hero. Thank you for the service.
Matt was very helpful and efficient, replace the battery of my car in no time even explain the condition of my car for me in detail so i know what to expect and how can i take care of it better. Highly Recommended, all the best
Matt did a wonderful job repairing my tyre. From the very beginning, he had such a nice approach over the phone, answered quickly, and was very responsive. He arrived exactly at the time he said he would and fixed the tyre perfectly. Great service, reliable and professional. I highly recommend him!
Matt drove all the way out to us in Gledswood Hills and was so quick and efficient. He was beyond kind and great at what he does. Could not recommend more.
Matt was so efficient, so cost effective (a good $200 cheaper than every other quote to fix my car's side mirror), so communicative, and also just such a great guy. Even offered to give us some money back because it took less time than he thought it would. Cannot recommend him enough!
Was stranded on the road, called auto hero and in half an hour they came to check if everything was okay, helped me with my tires and also educated me on wheel alignment. Definitely will recommend them highly!??
Loved it:) The process was simple, easy and fun. Will definitely be using this service again.
Big big big thanks to Matt, I had large metal object in my tyre being a new wanted to ensure I had a professional change and inspect my tyre little did I know how easy and fast Matt was ensuring I was safe and he was on the way excellent job very great price not only did change my tyre but ensured my others were good and safe to drive , 10/10 definitely recommend giving Matt a call
Tesla
BATTERY FAQ’s
What battery suits my Tesla (Model 3, Model Y, Model S, Model X, etc.)?
Tesla vehicles use a 12-volt (older models) or a 15.5-volt lithium auxiliary battery depending on the model and build year. We confirm the correct auxiliary battery type for your Tesla before replacement.
Can Auto Hero install my Tesla auxiliary battery at home, work, or roadside?
Yes. Our mobile technicians can replace Tesla 12-volt or 15.5-volt auxiliary batteries across all Sydney suburbs. We service Model 3, Model Y, Model S, and Model X.
Does my Tesla require coding, resets, or system initialisation after battery replacement?
Some Tesla models may need a system wake-up, soft reset, or shut-down cycle after replacing the auxiliary battery. The vehicle usually reinitialises automatically, but procedures vary by model. We confirm based on your Tesla’s generation.
Do you test the auxiliary battery before replacing it?
Yes. We can perform a full auxiliary battery health check to determine whether the issue is caused by the battery, DC-DC converter, or a wiring fault — for an additional cost.
How long does installation take?
Most Tesla auxiliary battery replacements take 15–60 minutes depending on trim removal, model type, and whether resets are required.
What warranty do Auto Hero auxiliary batteries come with?
All auxiliary batteries include a minimum 24-month warranty. Premium AGM or lithium options may offer up to 3 years with an extended-warranty upgrade.
Can Auto Hero handle complex auxiliary battery locations in Tesla models?
Yes. Tesla auxiliary batteries are often located behind panels, under frunk trims, or inside EV-specific compartments. Our technicians are trained to safely access these areas without disturbing high-voltage components.
What payment methods do you accept?
We accept EFTPOS, debit and credit cards, secure online payments, and tap-and-go. Buy Now Pay Later options such as Afterpay and Zip Pay are also available for eligible customers.
Do you remove and recycle the old battery?
Yes. We remove and recycle every battery we replace at no extra cost.
CONTACT US
If you need our service immediately, please call us on 1800 79 79 77 or leave a message and we will get back to you ASAP.
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NOT CASH.
Call Auto Hero today.
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