2014 FJR 1st Battery Replacement - Page 3 - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #21 of 30 (permalink) Old 04-28-2020, 02:21 PM
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Get an AGM or Li-On battery. We've arrived at better tech than the ole lead plates and battery acid.
Uh, the OE battery is AGM.

Have lithium battery in Tesla, where it is great for 85 kW-h. Tried lithium starter batteries in motorcycles and found them lacking. Satisfactory, not great, if one rides every day or at least once per week, or religiously plugs into maintainer when parked. The Tesla gets plugged in every time it is parked at home.

Also have EGo 56v lithium self-propelled lawn mower, string trimmer, and blower. Lithium works well there too where the batteries are kept on a charger/maintainer. The mower is not as powerful as a gasoline mower but it gets the job done and runs at least 45 minutes on one charge going on the 4th season. The trimmer and blower are equal to any gas versions I have used.

Had problems starting motorcycles below 50°F with a lithium battery. After 2-4 1 second applications of starter dead rotor (nothing turning) the lithium battery warmed enough to source sufficient current to turn the starter and get the job done. Minor weight savings was not worth the much greater cost and inconvenience.

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post #22 of 30 (permalink) Old 04-28-2020, 03:21 PM
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If your new battery is a flooded battery, you want to give it a slooow initial charge, that is if you want it to last as long as possible.

bike X miles=smiles
smiles ÷ bike=miles
smiles ÷ miles=bike.
It's simple math.

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post #23 of 30 (permalink) Old 04-28-2020, 04:01 PM
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If your new battery is a flooded battery, you want to give it a slooow initial charge, that is if you want it to last as long as possible.
I always hear this statement and I guess I'm slow charging when I have a new battery replacement. After the initial acid pour in, I put it on a motorcycle battery tender for 24 hours. Is that what is meant as a slow charge?
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post #24 of 30 (permalink) Old 04-28-2020, 04:42 PM
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It really depends on the battery and battery type. Every manufacturer will have initial charge instructions.
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bike X miles=smiles
smiles ÷ bike=miles
smiles ÷ miles=bike.
It's simple math.

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post #25 of 30 (permalink) Old 04-28-2020, 05:19 PM
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I always hear this statement and I guess I'm slow charging when I have a new battery replacement. After the initial acid pour in, I put it on a motorcycle battery tender for 24 hours. Is that what is meant as a slow charge?
Yes, you'll be fine. It's not as complicated as some make it out to be.
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post #26 of 30 (permalink) Old 04-28-2020, 07:54 PM
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If your new battery is a flooded battery, you want to give it a slooow initial charge, that is if you want it to last as long as possible.
Most AGM batteries are shipped unactivated. These are not flooded, but all AGM benefit form a “gentle” break-in on a relatively low current charger. The problem is that your vehicle will hit the new battery hard.
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post #27 of 30 (permalink) Old 04-29-2020, 05:51 AM
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Most AGM batteries are shipped unactivated. These are not flooded, but all AGM benefit form a “gentle” break-in on a relatively low current charger. The problem is that your vehicle will hit the new battery hard.
The last 2 AGM I ordered from MotoBatt were delivered fully charged and ready to go. Both took less than 5 minutes on a Battery Tender to give a green light.
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post #28 of 30 (permalink) Old 04-29-2020, 09:29 AM
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I remember the early days of AGM batteries, word was to not use them on motorcycles as they hated vibration. Evidently that was BS, or something changed ?

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post #29 of 30 (permalink) Old 04-29-2020, 11:39 AM
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I remember the early days of AGM batteries, word was to not use them on motorcycles as they hated vibration. Evidently that was BS, or something changed ?
That is the kind of thing those who did not yet offer an AGM battery would say. If anything an AGM battery could be better in vibration than liquid electrolyte. The glass mat between plates add support.

Such as, “don’t use synthetic until after break-in!”

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post #30 of 30 (permalink) Old 04-29-2020, 01:06 PM
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That is the kind of thing those who did not yet offer an AGM battery would say. If anything an AGM battery could be better in vibration than liquid electrolyte. The glass mat between plates add support.

Such as, “don’t use synthetic until after break-in!”
Wait - my mistake ! It was Gel batteries that were giving motorcyclists issues - still a problem apparently !
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