Powersport and motorcycle batteries are primarily of two types: lead acid and lithium, each with sub-variants. Lead batteries include flooded, AGM, gel, VRLA, or maintenance-free types. Lithium batteries consist of chemistries like LiFePo4 and lithium-ion. How do you identify your motorcycle’s battery type? What’s the best option? We’ll answer these questions below.
Flooded Batteries
A flooded battery is a lead-based battery with removable caps and liquid acid, primarily used in older motorcycles, some ATVs, and select personal watercraft.
These flooded electrolyte batteries are accessible but require careful, periodic maintenance. Although they are generally less expensive than other types, this cost savings comes with increased maintenance. You must periodically add distilled water to prevent sulfation from normal water loss due to high temperatures and electrolysis. Regularly check the battery’s fluid level.
AGM Batteries
An AGM battery is a lead-based battery with acid absorbed in a fiberglass mat between lead plates. It is the most common and versatile type of motorcycle battery.
Once in service, these batteries are sealed units that require less maintenance than flooded batteries. They still need regular charging when not in use, but fluid level monitoring is unnecessary. Unlike flooded batteries, the sealed batteries are spill-proof, preventing damage from battery acid.
Gel Batteries
A gel battery is a lead-based battery with suspended silicate gel, functioning like an AGM but being more sensitive to charging voltage. Current motorcycle manufacturers do not use them, though the terms are often confused.
VRLA Batteries
VRLA, or Valve Regulated Lead Acid, is a type of sealed rechargeable battery that requires no regular maintenance, such as adding water. They are also known as Sealed Lead Acid (SLA) batteries.
Lithium-Ion Batteries
Lithium-Ion battery refers to various lithium chemistries. Some have given lithium a bad reputation for fires, but motorcycle lithium batteries use stable Lithium Iron Phosphate (LiFePO4) chemistry, which has not had these issues. It’s common for motorcycle lithium batteries to be called lithium-ion batteries.
Lithium Iron Phosphate (LiFePO4) Batteries
LiFePO4 batteries are the preferred choice for starting applications due to their stability and charge characteristics similar to AGM. They are four times lighter, charge faster, and last longer than AGM equivalents. Powersport enthusiasts favor LiFePO4 batteries for the best ride.
Domande frequenti
Which motorcycle battery lasts the longest?
A lithium battery typically outlasts an AGM, which outlasts a flooded battery. However, proper use and maintenance can equalize their performance. Overall, we prefer lithium for a well-maintained motorcycle battery.
Can I use a lithium battery in any motorcycle?
No. While lithium batteries are generally superior, they may not be suitable in extreme cold, heat, or under prolonged heavy loads. For more information, please consult one of our tech experts about your specific application.
What does AGM mean for a motorcycle battery?
AGM stands for Absorbed Glass Mat, the preferred technology for lead-based batteries.
