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|General Sportbikes This area is for sport bike discussion in general. Topics that don't really belong anywhere else can go here. Questions can be answered and addressed to fully understand certain aspects of the sport. If your question is manufacturer specific please post it there.
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GET A BATTERY TENDER!!! It'll solve most of your future problems. while i have owned/used one, never had a battery go bad. the longest i've had the stock battery in any of my bikes was the Busa... 5 years... then i sold the bike. grrr. i seem to have bike adhd
Most bike manufacturers use the smallest and lightest battery they can get away with, but really the heavy lead-acid batteries are stone-age for sport-bikes these days. A strong battery is the foundation of your motorcycle; if it won't start you can't ride it so spending a few extra bucks is well worth it. I got the Shorai extra-strong 18Ah lithium battery (only weighs a couple of pounds) and their battery tender which plugs into a cable to the 5-pin port on the battery ($250 total). Lithium batteries are a bit sluggish in cold weather (until cranking perks up the ions) so I got the stronger model than standard. Shorai says their battery can last 10 yrs with proper care.
several reasons why a tender is bad
1. over charges
2. doesn't stop charging ever. (switches from full charge to trickle charge)
3. over charging or constant charging ruins batteries.
4. newer agm type batteries do not need trickle charged. charge it once a month is good enough for these. they can sit just over a year left alone because they have a very low self discharge rate.
I can't speak for others, as I've actually read what you say from users of other tenders, but mine doesn't charge it at all for several hours, then it puts a little juice, then stops completely. As I've said, I monitor the battery with the voltmeter constantly.
I've also read people say what you say, and honestly, if it wasn't so cold down here and my rides weren't short -in general-, I wouldn't keep it on a battery tender every night. But in this context and with my unit, I'm having good results
a quick warning about lithium batteries. they do actually require a special charger which your charging system in your bike does not have.
even lipo batteries for RC cars are very powerful for their size and weight but they have to be balanced charged with a charger designed for charging them. and must be monitored very closely during charging or they can explode or catch fire.
and you cannot discharge them past a certain point or they're useless and become dangerous and must be disposed of right away.
so be careful with those lithium batteries.
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