Car Battery Replacement at your home or office in Sunnyvale.

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Service Area

Average rating from customers who
received a Battery Replacement.
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$179.99 - $275.98

Price range for all vehicles


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Average rating from customers who
received a Battery Replacement.
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Recent Car Battery Replacement reviews in Sunnyvale

Excellent Rating


YourMechanic Car Battery Replacement Service

Average Rating

4.9/5

Number of Reviews

4,919

Rating Summary
4,723
114
31
16
35
4,723
114
31
16
35

Rigoberto

9 years of experience
699 reviews
Rigoberto
9 years of experience
I only want to work with Rigoberto’s! He’s great!
Rigobertos was absolutely amazing! He was able to get to me earlier than expected, which was great and was fast and efficient. He answered all my questions and was supe helpful. I will definitely be using his services again!

Kenneth

18 years of experience
487 reviews
Kenneth
18 years of experience
Kenneth was professional and very knowledgeable and I thank you for your expertise. Best Mechanic!!
Kenneth was great. Arrived at the agreed time window, assessed the vehicle and even scheduled me in for another service with the time he had before his next appointment. Truly appreciate all the help and making sure I understood everything he was doing. Could not recommend him more to anyone looking for a mechanic.

Chris

20 years of experience
1593 reviews
Chris
20 years of experience
Worked with me over the phone and found a solution!
Great service. Chris was very thorough and professional. I would use him again.

Lucas

19 years of experience
840 reviews
Lucas
19 years of experience
Excellent service, and communication, he was super patient with me. Fixed the car very fast!!!!
I got into my Elantra to go to lunch, turned the key and...nothing. The dashboard lights flickered a bit, there was some clicking, but nothing else happened. Since I've used YourMechanic in the past for a previous battery problem with my Mustang, I decided to schedule an estimate to diagnose the problem since I believed it to be a battery issue. Yup, it turned out to be a dead battery, which he went and got and, of course, installed and fixed. Lucas was excellent, courteous and explained the issues at hand.

Manuel

30 years of experience
270 reviews
Manuel
30 years of experience
Very professional and handled the job efficiently.

Jason

12 years of experience
15 reviews
Jason
12 years of experience
Great service!he really knows his cars and have such a wonderful personality

Gregory

29 years of experience
233 reviews
Gregory
29 years of experience
He did a great job getting my car running!

Jerry

28 years of experience
48 reviews
Jerry
28 years of experience
Jerry was nice and friendly. The service was fast and efficient.

Jay

14 years of experience
40 reviews
Jay
14 years of experience
A very pleasant experience. !!!!! Sunday repair, a real life saver.

Torrieanto

10 years of experience
458 reviews
Torrieanto
10 years of experience
Trae got right to it. experienced guys are obvious because they make a tricky job look easy! No messing around. Good guy to talk to also.


How much does Car Battery Replacement cost in Sunnyvale?

It depends on the type of car you drive and the auto repair shop you go to in Sunnyvale. Our mechanics in Sunnyvale are mobile, which means they don't have the overhead that repair shops have. They provide you convenience by coming to your home or office in Sunnyvale.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2006 GMC Savana 2500 $206 $126.09 $79.99 11% $233.59
2015 Ford Transit-350 HD $194 $114.33 $79.99 12% $221.83
2009 Ford Flex $196 $115.73 $79.99 12% $223.23
2004 BMW X5 $249 $168.84 $79.99 9% $276.34
2007 BMW 650i $244 $163.92 $79.99 10% $271.42
2010 Audi S5 $249 $168.84 $79.99 9% $276.34

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Car Battery Replacement Service

What are car batteries and how do they work?

A car battery is an energy storage device that relies on a chemical reaction within the battery to produce electricity. The stored electrical energy is used to initially operate the starter motor, ignition system, and fuel system on your vehicle. Once your car engine is running, the alternator supplies the electricity needed for all vehicle systems and charges the battery to replace the electric energy used when starting a car.

Most electric vehicles have a traction battery which is in addition to the standard 12 volt battery that is used to start the car engine. Traction batteries also convert chemical energy to supply electrical energy but operate at higher voltages and often are monitored by the PCM (Powertrain Control Module).

Battery

When to replace a car battery?

  • Your car doesn’t start. A new battery has a specified capacity to provide power. This capacity is referred to as the cranking amps rating of the battery. As a battery ages, the actual amps that a battery can supply becomes lower than its original rating Once the cranking amps fall below a critical threshold, it will be difficult or impossible to start your car.
  • Battery or charging system warning light is illuminated. Should a battery or charging system warning light illuminate, a mechanic should perform a few basic tests to determine if a battery replacement is needed.
  • Electrical components don’t work. Once a battery has started to fail, and the voltage produced by the battery drops, then vehicle electrical components can malfunction, such as the security system. If you are experiencing electrical malfunctions, it’s a smart idea to have the battery tested.

How do mechanics replace the battery?

  • A temporary power source might be installed to avoid the possibility of losing radio presets or stored data in the PCM while the battery is out. When the battery is already completely dead, this step is unnecessary.
  • The vehicle’s negative cable is removed from the battery, followed by the positive cable. The battery tie down system is loosened and the old battery removed.
  • Cable ends and wiring are carefully inspected to ensure cleanliness and no corrosion. In some cases, corrosion can be extreme and the cable may need to be replaced or wiring repaired.
  • The new battery is installed and the tie down system is reinstalled. Anti-corrosion compound is applied to the battery terminals. The positive terminal is reconnected followed by the negative terminal.
  • Some vehicles, for example some models of BMW, VW, and Audi, may require PCM programming to input battery parameters. This step, performed using a specialized scan tool, is necessary to maximize battery life and prevent electrical system malfunctions.
  • The car is started and charging system output is measured and compared against the factory OEM specification to ensure that the new battery will properly recharge. Generally, charging output will be in the range of 13.8 to 14.8 volts but the exact specifications vary by make and model.

Is it safe to drive with a battery problem?

Yes, but if you have a weak battery you might be left stranded somewhere if the battery dies completely and you cannot start your car. A faulty battery may also needlessly overload the alternator and could adversely affect the operation of the vehicle’s electrical system, including the vehicle security system and the shift interlock.

When replacing the battery keep in mind:

  • The quality of the electrical connections to the battery posts is important. Connections must be clean, free of corrosion and properly tightened.
  • Batteries store a large amount of energy and if short-circuited a battery could explode and can create intense discharges that can damage your eyesight. Insulated tools should be used to attach cabling to battery terminals. Otherwise, the battery’s positive cable can be shorted to ground or the positive and negative posts can be directly shorted. Batteries can only be safely installed from a positive terminal to positive wiring and from a negative terminal to body ground. If the polarity is reversed damage will likely occur to the vehicle’s electrical system.
  • Generally, a car battery will have a service life of 4 to 7 years. If a load test on a battery reveals a significant reduction in the capacity of the battery to provide power, you should buy a new battery rather than wait for the old battery to fail completely.
  • Batteries should only be disconnected if the engine is off and the alternator is not running. Disconnecting a car battery while the alternator is running can cause a voltage spike that will damage sensitive electronic components in the vehicle, such as the PCM.

Fast and easy service at your home or office

GET A QUOTE FOR YOUR CAR

Backed by 12-month, 12.000-mile guarantee


How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com