Car Battery Replacement at your home or office in Mendham.

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12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(8,892)

How much does Car Battery Replacement cost in Mendham?

It depends on the type of car you drive and the auto repair shop you go to in Mendham. Our mechanics in Mendham 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 Mendham.

Car Battery Replacement pricing for various cars

CarsEstimateParts CostLabor CostSavingsAverage Dealer Price
2006 Subaru Forester$258$162.74$94.994%$270.24
2013 Chevrolet Malibu$294$199.14$94.994%$306.64
2007 Volvo V50$353$257.90$94.993%$365.40
2015 Infiniti QX60$276$181.10$94.994%$288.60
2014 Lexus ES350$270$174.70$94.994%$282.20
2011 Porsche 911$353$257.90$94.993%$365.40

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.

Recent Car Battery Replacement reviews in Mendham

Excellent Rating

(8,892)

Rating Summary
8,610
167
39
18
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8,610
167
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18
58

Tony

15 years of experience
280 reviews
Tony
15 years of experience
Great job. On time and fixed what I requested. Would be happy to schedule him in the future.

Desmond

30 years of experience
13 reviews
Desmond
30 years of experience

Dameron

17 years of experience
171 reviews
Dameron
17 years of experience
Dameron was knowledgeable and courteous. He had my problem fixed quickly.

TJ

26 years of experience
362 reviews
TJ
26 years of experience
Completely convenient exercise. TJ stayed in contact most of the morning before the appointment, keeping me completely updated on appointment time. He met me at office, texted to update status throughout repair, and finished well within the time we had budgeted. Great service.

Reginald

37 years of experience
93 reviews
Reginald
37 years of experience
Reginald was on time and very knowledgeable about the issues concerning my car. Reginald provided recommendations and addressed issues at hand. Thank you.

Michael

6 years of experience
132 reviews
Michael
6 years of experience
MICHAEL FIX MY CAR IN ABOUT AN HOUR AND HALF TO REPLACE MY BATTERY OF MY AUDI Q7 HE KNOWS WHERE THE PROBLEM IS, HE IS VERY PROFESSIONAL AND POLITE I WILL RECOMMEND IT TO MY FRIENDS AND RELATIVES,GOOD JOB MICHAEL THANKS...

Damian

11 years of experience
465 reviews
Damian
11 years of experience
Timely, communicative and patient. Couldn't be happier.

Claud

8 years of experience
475 reviews
Claud
8 years of experience
He was on time. He worked quickly and with expertise.

Troy

40 years of experience
107 reviews
Troy
40 years of experience
On time, and got it done!

Shawn

12 years of experience
285 reviews
Shawn
12 years of experience
Shawn is very gentle and a thorough professional. He always does a great job. I highly recommend him

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