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AGM Motorcycle Battery FAQs

July 05, 2023 Comments Comment

A quality battery is vital to maintaining the performance and reliability of any motorcycle, but especially late-model bikes equipped with electronic engine management and stability systems, navigation and infotainment systems, and LED lighting which all have specific voltage requirements. An absorbed glass mat (AGM) lead acid battery is featured as original equipment on all new Harley-Davidson® motorcycles and is a good choice when it’s time to replace your Harley-Davidson motorcycle battery. Let’s answer some FAQs about AGM motorcycle batteries.

What is an AGM Battery?

All batteries work by converting chemical energy to electrical energy. A traditional flooded lead automotive or powersports battery contains lead plates divided by a series of separators. These plates and separators are suspended in liquid sulfuric acid that acts as an electrolyte. An AGM battery separates its lead plates with an absorbent fiberglass mat that holds electrolyte in a dry state rather than in a liquid as in a flooded battery.


How is an AGM battery different from other motorcycle batteries?

When it’s time to replace your motorcycle battery, you may have a choice between an aftermarket flooded lead acid battery and an AGM battery. The AGM battery may be more expensive but will offer a number of benefits that may make it the better value for your motorcycle.

 

  • The AGM battery is much more resistant to vibration than a flooded battery, a key advantage in the motorcycle environment and a contributor to a longer life span.
  • The AGM battery can produce higher voltage for more cranking power.
  • The AGM battery recharges up to five times faster than a flooded battery.
  • An AGM battery is spill-proof, because the electrolyte is absorbed by the glass mat.


What are the benefits of a Harley-Davidson® AGM battery?

  • Each is a perfect replacement in size and power rating for a Harley-Davidson Original Equipment AGM battery, built and rigorously tested to exacting Harley-Davidson requirements.
  • Corrosion-resistant stainless steel terminal bolts and the exclusive molded terminal design increases strength and durability.
  • The plates are lock-bonded together to reduce the potential for vibration damage, which contributes to a longer life.
  • The heat-sealed cover of these maintenance-free batteries prevents electrolyte leakage and improves reliability.
  • The vent system is specially designed to minimize leakage.The AGM battery can produce higher voltage for more cranking power.


When does it not make sense to use an AGM battery?

A Harley-Davidson® Lithium LiFe battery could be a better choice if the motorcycle is stored in a location where power for a maintenance charger is not available. When disconnected from the motorcycle, a Harley-Davidson Lithium LiFe battery will maintain its charge without maintenance for up to 12 months.

Learn more about lithium motorcycle batteries.

Learn about the differences between AGM and Lithium motorcycle batteries


Does Harley-Davidson offer AGM motorcycle batteries?

Harley-Davidson offers a selection of premium AGM batteries that are a direct replacement for the Original Equipment battery in many models. Browse the latest and most popular AGM motorcycle batteries from Harley-Davidson online inventory.  

Find a Harley-Davidson AGM batteries that fits your bike.


Does H-D offer accessories to charge AGM motorcycle batteries?

Harley-Davidson offers a selection of Battery Chargers and Charging Accessories to help keep our AGM motorcycle batteries at full power.

Keep your Harley-Davidson® bike charged and ready to ride with motorcycle battery and charging accessories from Harley-Davidson, available at your local Harley-Davidson® dealer or on line at H-D.com

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