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shreddr, this not as good a weight savings as the BST wheels, but you do feel it. It is worth $200+.
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68 R50/2(1968 was Dad's then mine to 1990) SOLD
07 BMW F800S (3/2007-9/2008) LEMON'D
'07 BMW R1200S black CF/white tank panels (acquired 10/24/2008)
My bike here:
http://tiny.cc/MyBike
Old 07-22-2012, 01:02 PM
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I ordered the LFX18, it was the same price as the Odyssey PC310 which was the only other perfect fit other than a new stocker. another 6 lbs off the bike!
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Old 07-22-2012, 01:31 PM
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That's what I have and it works fine here in the heat, on my R1200S!
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68 R50/2(1968 was Dad's then mine to 1990) SOLD
07 BMW F800S (3/2007-9/2008) LEMON'D
'07 BMW R1200S black CF/white tank panels (acquired 10/24/2008)
My bike here:
http://tiny.cc/MyBike
Old 07-22-2012, 02:09 PM
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Quote:
Originally Posted by AZ-J View Post
That's what I have and it works fine here in the heat, on my R1200S!
Works fine for me too!
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Old 07-22-2012, 02:54 PM
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Here's the photo comparing the stock R1200S battery to the Shorai LFX-21. It's a drop in replacement if you use a single layer of the included adhesive-backed foam on the bottom of the battery before dropping it in. The original clamp holds it perfectly. With the Shorai 21 amp-hour unit, the thing JUMPS to a start with about a single turn of the crank. And it's still a feather compared with the stocker.
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Old 07-26-2012, 05:24 PM
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I'm hoping my stock Exide lasts long enough so we can get some data on the long term viability of the 18amp / 21amp Shorai's.
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Old 07-27-2012, 08:56 AM
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My 18 amp has been on the bike for a year now and works fine. No tender necessary.
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Old 07-27-2012, 12:14 PM
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Quote:
Originally Posted by bikerfish1100 View Post
really? waht the hell are you doing with those things? buying, and then just letting them sit, discharging themselves?
ever consider using a trickle charger to keep them up to snuff?
i have never gotten less than 3 years from any battery- with the worst being a 6 volt Yuasa in my '65 Triumph TR6C. but now we're talking Lucal Electrics, and that is a whole 'nother kettle of worms.
Seems like you aren't the only one to have a problem with Yuasa batteries...

Boeing Dreamliner investigation turns to battery maker - Chicago Sun-Times
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Old 01-21-2013, 09:09 AM
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The Sun Times article is old. The batteries are good; now they are looking to the chargers. USA Today 1/21/2013.
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68 R50/2(1968 was Dad's then mine to 1990) SOLD
07 BMW F800S (3/2007-9/2008) LEMON'D
'07 BMW R1200S black CF/white tank panels (acquired 10/24/2008)
My bike here:
http://tiny.cc/MyBike
Old 01-21-2013, 09:40 AM
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The HP 2 here is still starting much faster because of higher RPM of the starter output. The battery seems to hold a charge MUCH longer than the regular battery units that came in the bike. I have used the BMW charger unit on several occasions over these past months, but it was not really needed. So far.........a very good product that starts the bike quicker, holds a charge longer, and which removes weight from high on the bike............some seven pounds. Is this an obvious choice or what?
Old 01-21-2013, 10:15 AM
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i've heard that the Shorai, as a Li-Ion battery, does not perform well in cold weather. That may not be an issue for those who live and stay in the south, but those of us in more temperate areas need cold and hot reliability.
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Old 01-21-2013, 10:21 AM
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My dealer stocks them and has them on display too. I was going to buy one but they advised against it because of its cold weather performance.
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Old 01-21-2013, 10:37 AM
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I like light weight, but i like not having to bump start the bike at 25 degs F even more. i'll think stick with Odyssey batts.
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Harleys are like opinions, every a-hole's got one!
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2001 R11S "lite", with a few mods.
2009 F800GS. has a better saddle.
Old 01-21-2013, 10:41 AM
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Yes, it's widely reported that this type of battery can be slower on cold days, though we I didn't find it to be a problem recently when the temps dropped into the 30s. But most say to just turn on the ignition and let some current draw warm up the battery before hitting the starter button. I used to have to do this anyway due to the FRK installed on my bike. I'd just wait until the idiot lights all cleared and it did and still does fire right up. But the Shorai is waay better than the original. YMMV-
P.S. I think the Shorai is different chemistry than the conventional laptop/Volt/787 batteries, no? I know that Shorai says you can dispose of an old battery by simply putting in the trash! I don't think that's true of the conventional Li-ion batteries.
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Old 01-21-2013, 10:58 AM
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I have not found the cold weather problems you speak of to be a factor. Here, in part, is some of what research on the subject has shown.

"Lithium does increase in resistance more as temperature drops, compared to lead-acid. However, they also react to cranking under cold conditions in a much better way. Lead-acid will increase resistance on each subsequent cranking attempt, until it won't turn over. If your LFX fails to start the engine on first crank, that first crank has warmed the battery, and the second attempt will be much stronger, and so on until you get a good start.

Shorai LFX are much better in cold-weather conditions than other-brand lithium starter batteries, due to our extreme-rate formulation with low resistance. Down to about 20 degrees Fahrenheit (-7C) most users find that they can start normally on first crank. If your headlight comes on at key-ON, it is good for the batteries to flow some current before cranking in cold weather. The suggested headlight-on time before cranking depends on the temperature. If starting at 40f (5C), 30 seconds will help wake the battery and increase cranking performance. If at 0f (-17C), leave the lights on for 4~5 minutes before cranking. The result will be a better first crank, and longer battery life. Any other accessories that can be turned on before cranking can also be used for this purpose, such as heated gear, radio, etc..."

So when cranking your BMW with one of these batteries in it........in temps below 10 degrees or so...........turn on the key, note the lights come on, count to 100 or so.......and then crank. Now NO Bad!

Last edited by Dr. Curve; 01-21-2013 at 12:10 PM..
Old 01-21-2013, 12:01 PM
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Using the horn works too when cold. Or use a blow dryer on heat.
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68 R50/2(1968 was Dad's then mine to 1990) SOLD
07 BMW F800S (3/2007-9/2008) LEMON'D
'07 BMW R1200S black CF/white tank panels (acquired 10/24/2008)
My bike here:
http://tiny.cc/MyBike
Old 01-21-2013, 02:04 PM
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Quote:
Originally Posted by Dr. Curve View Post
I have used the BMW charger unit on several occasions over these past months
Thats interesting because I see even Optimate sell a different tender for such like,and the people I've come across who use them(batteries) do as well.
Old 01-21-2013, 02:39 PM
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The battery charger I have used is the basic BMW one that is a small grey box, with multiple lights that start off with one coming on green.......and one red......as the charge is read and possibly absorbed by the battery.....the red light changes from red to yellow and then to green to inform that the battery is fully charged. On the three times I have used the charger, it went to green/green very quickly which leads me to believe these batteries do not go down very quickly. I think I will just leave it for a while, even though the bike is only used every once in a while. I just got back from the shop and was taken at how fast the HP2 started, barely turning over even once before firing off.............even though it had been sitting for weeks. Have you tried one yet Chris, or are you still on gel.
Old 01-21-2013, 04:09 PM
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I use a Battery Tender + for all the lead acid and LI Pe batteries I have had since 2007. It works great with the Shorai through our 110+ summer.
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68 R50/2(1968 was Dad's then mine to 1990) SOLD
07 BMW F800S (3/2007-9/2008) LEMON'D
'07 BMW R1200S black CF/white tank panels (acquired 10/24/2008)
My bike here:
http://tiny.cc/MyBike
Old 01-21-2013, 06:36 PM
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Well in the depths of the Uk winter I have 5 bikes and 3 cars all on battery tenders,mainly Optimates of various models.

I put a new 545 Odyssey on the 1100s last year more out of a guilty conscience as the one that was on must have been 8 or 9 years old and still going strong,the K1200 is on it's 3rd genuine BM battery in 5 years!!! and that will be taken off the end of this year when it's two years old and I'll either fit a cheapo lead acid or a Shorai or similar.

The problem I have is an aversion to paying retail,and these new batteries may well be readily available from specialist suppliers but from normal trade outlets they ain't and when they are and I'm happy with the tender situation,which I'm not at the moment then I'll try one on my SM and go from there.

I see at the mo an Optimate tender for the new style batteries are the same cost as a battery,now it may well be a sales con,and I haven't worked that out yet!!!.
Old 01-22-2013, 12:51 AM
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Old 01-22-2013, 12:51 AM
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