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When Will My Motorcycle Battery Die?

7K views 46 replies 17 participants last post by  WI_Hedgehog 
#1 ·


It depends where the bike lives: Hot and cold climates are both harder on batteries than temperate climes, and bikes that get ridden regularly are easier on batteries than ones that sit for months – though a good battery tender with a float feature negates much of that. In fact, I was bragging about the Shorai lithium-iron battery in my bike not long ago, which must be seven years old now and has never seen a charger, when my friend Jim said big deal, the original equipment sealed AGM battery in his VFR lasted 9.5 years, and his 21-year old Ducati is only on its second battery. So, sealed batteries can last a long time especially if you’re OCD about maintenance.

According to several sources including BatteryStuff.com, though, your 12.3-volt reading means your battery may be on its way to Nirvana; a fully charged one should read 12.7 volts or above. Since you like to play with your voltmeter, there are instructions to “stress test” your battery at the same page, along with a lot of other battery tidbits that will let you know for certain if it’s time to replace.

Send your moto questions to AskMOAnything@motorcycle.com. If we don’t know the answer, we know who does, and if they don’t know we’ll make up something reasonable-sounding. What do you want for free?
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#34 ·
Battery died Friday. Found that if I press and release the starter in half-second intervals I could get it started after a few seconds, but it just got too annoying. My cheap ass picked up a battery locally, next failure I'll revisit the EarthX one. Guy at the shop verified that the old one was very bad, said he was surprised it's turned anything over at all. Now let's see how long this one lasts!
 
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