logo

Infiniti Q45 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

(55)

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.

See availability

Customer Ratings

(55)

Car Battery Replacement Service

How much does a Car Battery Replacement cost?

On average, the cost for a Infiniti Q45 Car Battery Replacement is $296 with $156 for parts and $140 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2004 Infiniti Q45V8-4.5LService typeCar Battery ReplacementEstimate$478.18Shop/Dealer Price$565.28 - $812.39
2005 Infiniti Q45V8-4.5LService typeCar Battery ReplacementEstimate$469.17Shop/Dealer Price$553.17 - $797.97
1992 Infiniti Q45V8-4.5LService typeCar Battery ReplacementEstimate$474.73Shop/Dealer Price$560.17 - $809.16
2000 Infiniti Q45V8-4.1LService typeCar Battery ReplacementEstimate$457.55Shop/Dealer Price$538.69 - $774.80
1997 Infiniti Q45V8-4.1LService typeCar Battery ReplacementEstimate$457.89Shop/Dealer Price$541.69 - $779.99
1996 Infiniti Q45V8-4.5LService typeCar Battery ReplacementEstimate$474.73Shop/Dealer Price$560.41 - $809.59
1999 Infiniti Q45V8-4.1LService typeCar Battery ReplacementEstimate$457.55Shop/Dealer Price$538.72 - $774.85
1998 Infiniti Q45V8-4.1LService typeCar Battery ReplacementEstimate$457.89Shop/Dealer Price$539.12 - $775.48
Show example Infiniti Q45 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

Number of Infiniti Q45 services completed
605+
services done by our mechanics
TOTAL NUMBER OF EXPERT Infiniti MECHANICS
1000+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

Meet some of our expert Infiniti mechanics

Real customer reviews from Infiniti owners like you.

Excellent Rating

(55)
Rating Summary
53
2
0
0
0
53
2
0
0
0

Pardeep

16 years of experience
1060 reviews
Request Pardeep
Pardeep
16 years of experience
Request Pardeep
by Earlene Coleman
Q45 1994 - When I slow down and stop the car, engine shuts off - San Jose, CA
Pradeep came on time and diagnosed the problem with my car. He was polite and respectfully wore a mask.

Gregory

208 years of experience
385 reviews
Request Gregory
Gregory
208 years of experience
Request Gregory
by Michael Cales
Q45 2002 - Camshaft Position Sensor - Littleton, CO
Greg, your man! Very convenient and worth every penny! No offense, let's hope I don't need to call you again, but if I have any future issues, you're the mechanic I am calling on! Thanks for your hospitality!

Nazareth

24 years of experience
219 reviews
Request Nazareth
Nazareth
24 years of experience
Request Nazareth
by Eugene Robinson
Q45 1996 - Starter - Altadena, CA
Nazareth arrived on time and did the

Tabitha

14 years of experience
318 reviews
Request Tabitha
Tabitha
14 years of experience
Request Tabitha
by Clarence Carter
Q45 2003 - Camshaft Position Sensor - San Diego, CA
Very timely, professional and competent. Highly recommend.

Excellent Rating

(55)
Rating Summary
53
2
0
0
0
53
2
0
0
0
Number of Infiniti Q45 services completed
605+
services done by our mechanics
TOTAL NUMBER OF EXPERT Infiniti MECHANICS
1000+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

Recent articles & questions

P2250 OBD-II Trouble Code: O2 Sensor Ref Voltage Circuit High Bank 2 Sensor 1
P2250 means an issue with the upstream oxygen sensor voltage circuit in bank 2 due to a faulty sensor, fuel pressure, or engine or exhaust leaks.
Read more
The Traveler’s Guide to Driving in Puerto Rico
Puerto Puerto Rico is a beautiful place that has a lot to offer vacationers. Since it is a commonwealth of the United States, there is no need to have a passport to visit, which can make vacationing easier. All you...
Read more
How to Replace a High Pressure Safety Valve
High pressure safety valves help the car engine run smoothly. Oil filter housings can burst if high pressure relief valves are stuck closed.
Read more

Air Bag Light Illuminated 2006 Hyundai Elantra

Hi - resetting the Air Bag light (https://www.yourmechanic.com/question/my-service-air-bag-warning-came-on-should-i-worry-by-iamisaiah) will require, at a minimum, a scan/reset tool capable of accessing the Supplemental Restraint System (SRS) which monitors the air bag status. If the problem was a temporary disconnect at the air...
Read more

Trying to swap a 3800 series 2 motor from an 03 impala to an 04 Bonneville will it work

Hi there. You might want to consult with a local engine swap mechanic on this one. Since we don't offer this service to our customers, we try to stay away from giving definitive answers on whether or not engine swaps...
Read more

Code po351.

Read more
  1. Home
  2. Estimates
  3. Infiniti
  4. Q45
  5. Car Battery Replacement

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 (844) 997-3624 · hi@yourmechanic.com

Read FAQ
GET A QUOTE