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The tried and true lead-acid battery is very common. They are the least expensive option available. The lower price tag does come for a reason, though. They tend to need more maintenance, with constant trickle charging and acid refills. Many lead-acid batteries are sold dry, requiring you to fill them with acid yourself. But with proper maintenance, they can power your Harley sufficiently.
The next level of Harley batteries include AGM and gel batteries. Both of these types of batteries are very durable and are spill-proof. This makes them a great option for custom bike builders who need to stand the battery on end or have it tilted in some way. Gel batteries are typically a bit smaller and can be deeply discharged routinely without the worry of damaging sulfation.
Lithium-ion batteries have been steadily growing in popularity over the past few years as their technology advances. Lithium Harley batteries can be quite a bit smaller than their more standard counterparts and still pack a hefty load of cold cranking amps. They are extremely light and can dramatically reduce weight on your bike. They have a long life-span and self-discharge at a very slow rate. Some downsides is that they do struggle a bit in cold weather and they tend to cost more than other types.
At Dennis Kirk, you will find a large selection of Harley batteries from top brands like Yuasa for great low prices. We keep the most in stock and ready to ship to you the same day that you order them. That way, you can be back on the road with your solid-starting Harley as soon as possible. And when your order is over $89, we will ship it to you for free. Use the Ride Selector at the top of the page to find all of the batteries that fit your specific bike. Also, feel free to contact our knowledgeable Tech Team if you have any questions on which battery is best for your Harley.