Battery Fail - What Mileage ? - Triumph Bobber Forum
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post #1 of 8 (permalink) Old 08-04-2019, 05:50 PM Thread Starter
Roy
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Question Battery Fail - What Mileage ?

Fellow Bobber riders,

I've now seen more than one post relating to a member's Bobber/Speedmaster failing to start eventually resulting in a battery issue that needs replacement.

In an attempt to circumvent such an issue I'm now thinking what would be the best mileage to replace the battery.

This may be a shot in the dark but thought there was no harm in starting a thread just to see if there was any information that could be extrapolated.

So can I ask at what mileage did your battery fail?

Cheerio,

Roy
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post #2 of 8 (permalink) Old 08-04-2019, 07:14 PM
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Mileage has very little to do with it. How the battery is stored and how often the bike is ridden are much more important. I have seen batteries that are always on a good brand of tender go eight years. Bikes that are stored in the winter months and not maintained properly are lucky to get 3 years. I would say that if you do a good job of maintaining your battery replace it at the beginning of every 4th season and you probably won't have an issue!
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post #3 of 8 (permalink) Old 08-04-2019, 07:25 PM Thread Starter
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Thanks for that mate.

Yes I'm aways of that and wasn't implying that mileage has anything to actually do with battery life span, I should have made that clearer.

I was just working on an over simplistic theory that all things being equal if one purchased a new Bobber and remembered what milage the battery failed and if something similar happened to a few riders, then that might give a heads up to other riders that, that may be something to look out for.

But as mentioned, this may be a shot in the dark.

Cheerio,

Roy
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post #4 of 8 (permalink) Old 08-04-2019, 08:49 PM
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Roy, I took delivery of my Robber in April 2018. I put 5,200 miles on it last year and had the dealership store it over the winter. They removed the battery and stored it indoors on a tender until I picked it back up in April of this year. I put another 2,500 miles on it before the battery died, so a total of 7,700 miles. I never connected it to a Battery Tender at home. Now that I've replace the battery, I plug it into the tender every time I get off of it in the hope that it'll last a lot longer.

I've got the battery below "saved to cart" on Amazon, so when the time comes to replace the current battery I'll be able to place a quick order and get a new one within a day or 2.

https://www.amazon.com/gp/product/B0...DZ5DLR7S&psc=1

Good luck with yours! If you've put it on the battery tender regularly, you'll likely get more longevity out of the original battery than I did.

Each one matters.
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post #5 of 8 (permalink) Old 08-04-2019, 09:18 PM Thread Starter
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Thanks for that @ysoslo ,

Good information there. I don't put mine on a tender as I'm riding it every day. I'm up to around 6,500 miles on my bike and was thinking I would put a new batter on (as a precaution) at 7,500. It would seem from you initial response that may be a good way to go.

Cheerio,

Roy
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post #6 of 8 (permalink) Old 08-04-2019, 11:53 PM
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My Corvette battery lasted fifteen years, always on a battery tender. My HD battery was replaced after nine years even though it worked fine just as a precaution, also always on a tender.

Chico
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post #7 of 8 (permalink) Old 08-05-2019, 05:55 AM
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You can't predict some battery failure modes, years ago Yuasa had a batch of batteries for bikes that failed with breaks in cell-cell connection...

Larry


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2018 Bonnie Speedmaster Jet Black with Highway pack (less bags) and rider footboards
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post #8 of 8 (permalink) Old 08-05-2019, 08:11 AM
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For me seems who uses battery tender, their batteries die ... . I never(Daytona 675 and now BB) used one(i bought it and still in box) and battery is ok.
I have 27k km on odo now, we have 5 month cold winter. I leave battery on bike and ca run bike 4 - 5 x 10 min during winter, thats all - it started without problems on spring.
So i don't see anypoint to use battery tender by myself or take battery off the bike .

Only the case when batteries(3x, before i checked voltage) were burnt by Dyatona 675 was when their famous voltage regulator failed and output voltage was over 25v, that was fixed by using aftermarket MOSFET voltage regulator.
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