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Receive Up To 30% Off Your Online Purchase Of Select Parts And Accessories
Use promotional code MMJ30 at checkout to receive 30% off the following categories: Select Brake Parts, Select Hi-Performance and Truck Accessories, Batteries, Paint, Splash Guards, Select Ventvisors & Bug Shields, Springs & Spacers, Water Pumps, Belts, A/C Parts, Starters, Alternators, Fuel Pumps, Radiators, Radiator Fans, Thermostats, Caps & Clamps, Clutches, Spark Plugs, Plug Wires, CV Axles, Battery Chargers & Booster Cables, OE Locks, Rack & Pinons, Window Motors, RainX Wipers, Appearance Chemicals, Floor Mats, Lift Equipment, Hand Tools, Travel Accessories, Car Covers, Seat Covers, Wheel Covers, Body Repair, Collectibles and Apparel.

Use promotional code MMJ20 at checkout to receive 20% off the following categories: Ignition, Shocks & Struts, Chassis, Jumpstarts, Air Filters, Oil Filters, Bearings & Seals, Engine Parts, Wash Accessories, Outdoor Lifestyle, Towing, Mini Air Compressors, Tire Repair Accessories, Mufflers, Grease/Oil, Additive Chemicals, P/S Pumps, Cooling Product, Timing Belts, Specialty Tools, Radiator Hose, Motor Mounts, Mirrors, Lug Nuts, Sealants/Adhesives, Fuel Filters, P/S Hoses, Gas Cans, Oil Change Accessories, Help, Wiper Motors, Loaner Tools, Air Compressors, Horns, Books, Distributors, Sun Control and Exhaust Adapters.

Use promotional code MMJ15 at checkout to receive 15% off the following categories: Test Equipment, Power Tools, Emergency Supplies, Electronics and Stereo & Accessories (MAP pricing Exclusions).

Offers 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 in these offers will be displayed in product search results and product detail pages. Excludes the following brands: WeatherTech, Champion, 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, Philips and BBK Performance. Valid online until 11:59 PM EST on 11/22/17.

Receive 10% Off Wagner branded brake parts with your online purchase. Use promotional code: WAGNER10.

Receive 20% Off Select Champion branded products with your online purchase. Use promotional code: CHAMP20.

Receive 10% Off Select FelPro branded products with your online purchase. Use promotional code: FELPRO10.

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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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