BMW 2.8 Bavaria Car Battery Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(363)

Included for free with this service

Online Booking

Mechanic comes to you

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

(363)

Car Battery Replacement Service

How much does a Car Battery Replacement cost?

On average, the cost for a BMW 2.8 Bavaria Car Battery Replacement is $304 with $209 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1971 BMW 2.8 BavariaL6-2.8LService typeCar Battery ReplacementEstimate$533.49Shop/Dealer Price$655.62 - $982.62
Show example BMW 2.8 Bavaria Car Battery Replacement prices

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

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating

(363)

Rating Summary
352
5
4
2
0
352
5
4
2
0

Gustavo

17 years of experience
400 reviews
Gustavo
17 years of experience
BMW 128i L6-3.0L - Battery - New Braunfels, Texas
On time and very professional. Would definitely recommend.

Andrew

14 years of experience
103 reviews
Andrew
14 years of experience
BMW 330i L6-3.0L - Battery - Federal Way, Washington
Phenomenal. This is my first time using MyMechanic. Like a dumbo I left my keys in my ignition and drained my battery, then realized I needed a new one. Not only is Andrew very kind and engaging, but he also arrived early which was awesome! He had my battery switched out in a jiffy. EXCELLENCE!

Steve

37 years of experience
149 reviews
Steve
37 years of experience
BMW X5 L6-3.0L Turbo Diesel - Battery - Fremont, California

Richard

21 years of experience
461 reviews
Richard
21 years of experience
BMW 650i V8-4.8L - Car Battery Replacement - Atlanta, Georgia
Great job

Excellent Rating

(363)

Rating Summary
352
5
4
2
0
352
5
4
2
0
Number of BMW Car Battery Replacement services completed
3993+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
experts on our platform

Recent articles & questions

How Long Does an EGR Cooler Last?
Within Within your vehicle is a part called the EGR cooler. EGR stands for Exhaust Gas Recirculation. This cooler is responsible for taking care of the exhaust gases once they leave the engine. It cools these gases so they are...
Rules of the Road For Ohio Drivers
When When it comes to driving, if you have a valid driver’s license, you likely know the traffic laws you are required to follow in the state in which it was issued. While that same knowledge will help with the...
What Does the Parking Assist Indicator Light Mean?
A parking assist system helps your car park when it may be tricky to do so. If the light is flashing, dirt may be blocking the sensors from working.

What Does the Mass Airflow Sensor Do?

Older systems use a movable vane in the intake stream called a Vane Air Flow (VAF) sensor. The VAF sensor used in Bosch L-Jetronic, Ford, and most Japanese electronic port fuel-injection systems is a movable vane connected to a laser-calibrated...

Brake light bulb sockets fried & melted

Hello there, when bulbs are required to be replaced multiple times like this, there are a few common causes. The most likely would be moisture in the taillight, short-to-power, wiring damage, or a faulty taillight assembly. Generally this is seen...

Check engine light flashing, sucking fuel, procrastinating when accelerating...

This is a very odd set of symptoms. I would suggest ruling out any fuel-related issues as the poor fuel economy and lack of power could be related to faulty sensors like the throttle body sensor, mass air flow sensor,...

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 (855) 347-2779 · hi@yourmechanic.com