See Details

25% Off Online Orders of Select Hard Parts. Enter Promo Code MMJ25 in Cart.

Close (X)

Receive Up To 25% Off Your Online Purchase Of Select Parts And Accessories
Use promotional code MMJ25 at checkout to receive 25% off the following categories: Select Brake Parts, Select Hi-Performance and Truck Accessories, Batteries, Water Pumps, Belts, A/C Parts, Starters, Alternators, Fuel Pumps, Radiators, Radiator Fans, Thermostats, Caps & Clamps, Clutches, Spark Plugs, Plug Wires, Chassis, CV Axles, Batteries, Battery Chargers & Booster Cables, OE Locks, Rack & Pinons, Window Motors, RainX Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Travel Accessories, Outdoor Lifestyle, Towing, 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, Air Filters, Oil Filters, Bearings & Seals and Engine Parts.

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: 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 9/24/17.

Use promotional code SHOCKS25 at checkout to receive 25% Off DIY Shocks & Struts

Receive 25% Off Wagner branded brake parts with your online purchase. Use promotional code: WAGNER25.

Receive 10% Off Select Champion, MOOG and FelPro branded products with your online purchase. Use promotional codes: CHAMP10, MOOG10 and/or FELPRO10.

Free Shipping on Orders Over $40 or in-store pickup

Marine Battery



Marine Battery

Marine batteries are a variety of starting, lighting and ignition (SLI) batteries. They can be the conventional flooded-cell lead-acid design or absorbed glass mat (AGM). Typically, marine batteries possess deep-cycle capabilities or, in other words, the ability to be deeply depleted and recharged many times without damage to performance.

What is a breather and how does it work

How Does it Work?

  • A marine battery is sometimes used for both engine starting and operating accessories such as lighting, fi sh fi nders and trolling motors
  • Similar to a car battery, the marine battery uses a chemical energy exchange process to store and dispense electrical energy

How is it Made?

  • Held in a robust polyethylene or polypropylene case that is divided into 6 cells
  • Lead plates, active compounds and plate separators are precisely loaded into each cell
  • The cells are tied together with a lead strap that is terminated on one end with a positive post and the other end with the negative post

Why Does it Fail?

  • Remains discharged for a lengthy period of time which causes lead sulfate crystals to build on the plates, eventually limiting the batteries ability to hold a charge
  • Freezing can also damage a marine battery
  • Repeated high-rate discharge

What are the Symptoms of Failure?

  • Performance in cranking ability will diminish
  • Battery will fail to hold a full charge

What are the Implications of Failure?

  • Failure of a marine battery can not be reversed, it must be replaced

How Difficult is the Install?

Difficulty Rating:

Related Parts

Return to Parts Guides