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1324
Posted on Wednesday, September 17, 2014 - 10:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I've read rumors online about the batteries in the new 1190's, but can't find specifics. And no, I haven't called my dealer, yet. Can anyone here clue me in on the battery (model, part number, dimensions, weight, etc.)?

Thanks!
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Froggy
Posted on Wednesday, September 17, 2014 - 01:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It is made by Shorai, Li-ion, 13.2 volt, 7 amp/hr, 315 cold cranking amps. I don't know which specific model it is off hand.
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Reepicheep
Posted on Wednesday, September 17, 2014 - 02:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Does it have integrated cell balancing / smart charging?

In theory that is a lot better, in practice I don't know if it's worth the money.
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1324
Posted on Wednesday, September 17, 2014 - 02:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Cool - thanks for the information.
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Skntpig
Posted on Wednesday, September 17, 2014 - 11:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Reep:

I don't think it has the smart charger inside the battery. Your EBR dealer sells and external one for $85

http://www.erikbuellracing.com/store/parts-accesso ries/electrical/shorai-charge-and-store-battery-ma nagement-system.html
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Dmhines
Posted on Thursday, September 18, 2014 - 07:39 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

FYI ... LIPO batteries can easily hold their charge for long periods of time. If you are not going to be riding for a while .. remove battery and put it in your house. From what I have read it will easily hold charge for a year or more.
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Reepicheep
Posted on Thursday, September 18, 2014 - 08:00 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That actually makes sense. A few factors were at play...

First, proper charging was always declared critical for a Lithium Ion battery. It's actually a fairly complicated charge profile, and you are doing several simultaneous calculus problems to figure out what you should be doing at any moment. That had a lot of truth, and it was always the story.

But a few things turned out to be happening...

First, the cells turned out to be fragile in a lot of ways, not just in how they were charged. So even though you do the charge right, the life was lucky to be 5 years anyway because of other reasons.

And they kept making the cells more and more durable across the board, including tolerance for mischarging. Some mechanical changes, some chemical changes, etc.

Also, the complicated "charge cycle" was for optimal performance. Deep discharges, the most rapid possible recharge, many cycles. Turns out, that doesn't actually happen that often in a lot of cases. So you don't actually get that many cycles, the cycles aren't often that deep, and "fastest possible recharge" isn't that critical for a lot of cases. Just charge it slower and think less.

So by the time you start looking at adding $100 in electronics to a $100 cell, but only increase it's life by 30% as a result, why again are we bothering? Especially given that a life in a motorcycle is going to be pretty brutal on all the other factors anyway. Vibration, heat cycles, burst discharge. Its like telling a heroin junkie they shouldn't smoke because its unhealthy. It's true, but irrelevant to their situation.

Lithium Polymer seems even more resistant to mischarging than Lithium Ion. I wonder what chemistry EBR / Shorai is using?
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