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Receive 25% Off Your Online or In-Store Purchase. Use promotional code MMJ25 at checkout to receive discount. Not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included will be displayed in product search results and product detail pages. INCLUDES the following categories: Starters, Alternators, Fuel Pumps, Radiators, Shocks & Struts, Chassis, CV Axles, Batteries, Ignition, Window Motors, Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Headlamps and Bulbs. Excludes the following brands: Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Moog, Wagner and BBK Performance. Valid online until 2:59 am EST on 5/1/17.

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Lead Acid Car Battery


Lead Acid Car Battery

The lead acid car battery was the first rechargeable battery produced for commercial use. The battery is a storage device, which stores energy and provides a power source for all of the electrical and electronic accessories. It is a physical reserve of energy within the car that is used to power the vehicle during starting and during operation to provide energy for the lighting system and accessories.

What is a AGM Battery and how does it work

How Does it Work?

  • A battery stores energy in chemical form that can be released on demand as electricity.
  • This electrical power is used by the car’s ignition system for cranking the engine.
  • Should the alternator or accessory drive belt fail, the battery might also need to power the vehicle’s entire electrical system for a short period of time.

How is it Made?

  • Car batteries are made up of alternating negative and positive plates of lead and separators.
  • Plates are bundled to produce about 2.2 volts and inserted into cells in the case.
  • Cells are tied together by a strap of which one end forms the positive battery terminal and the other, the negative.
  • These plates are submerged into an electrolyte solution of sulfuric acid and water.

Why Does it Fail?

  • Old age.
  • Heat, cold and vibration.
  • Elements in the electrical system that drain your battery.
  • Leaving your headlights, radio, etc on when your car isn’t running.

What are the Symptoms of Failure?

  • Slow engine crank.
  • Issues with electrical components.
  • Dashboard warning light.
  • Swollen battery case.
  • Old age.
  • Weird smell.

What are the Implications of Failure?

  • Most frequently, the vehicle will fail to start.
  • Conventional car batteries last 3-4 years, much shorter in hot climates and those with poor road-quality.

How Difficult is the Install?

Difficulty Rating:


  • Installation difficulty varies by vehicle

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