ADVrider

Go Back   ADVrider > Bikes > Old's Cool > Airheads
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-20-2015, 02:15 PM   #1
DrManhattan OP
Adventurer
 
Joined: Aug 2014
Location: Salt Lake City, UT
Oddometer: 28
Odyssey PC680 only 170 CCA??

Hey guys, doing a lot of reading about using smaller batteries in Airheads and it seems the Odyssey PC680 is a common choice, but according to the Odyssey website all versions of the PC680 now only come with 170 CCA's...

Is anyone using the new version of this battery on an r100? I was planning to mount this battery under the seat cowl for my r100rs cafe project, but now I'm wondering if it'll be strong enough to start the bike.

Any advice/insight is greatly appreciated. Thanks guys!
DrManhattan is offline   Reply With Quote
Old 04-20-2015, 02:22 PM   #2
bmwrench
Beastly Adventurer
 
Joined: Nov 2006
Oddometer: 2,184
I've seen one that was being used to start a hot-rodded car engine. I don't think it'll have a problem with your R100.
bmwrench is offline   Reply With Quote
Old 04-20-2015, 02:32 PM   #3
DrManhattan OP
Adventurer
 
Joined: Aug 2014
Location: Salt Lake City, UT
Oddometer: 28
Well I know these batteries have been used on these bikes for awhile now. My only concern is that they've seemingly dropped the cold cranking amps from 220 to 170.

I'm referencing this thread:
http://www.advrider.com/forums/showthread.php?t=952377

Anybody know if 170 CCA will be enough to reliably start the bike?
DrManhattan is offline   Reply With Quote
Old 04-20-2015, 02:39 PM   #4
Screaming Chicken
Studly Adventurer
 
Screaming Chicken's Avatar
 
Joined: Nov 2007
Location: Netherlands
Oddometer: 592
Are we talking about the same thing? The PC680 is only smallish compared to the stock BMW boat anchor. It's still a big ole lump to try to hide anywhere...

And it'll crank a Bosch no problem. My 5YO PC680 had some trouble getting my very grumpy hard-to-start R100GS to fire up after a day sitting outside at 5 below freezing, but it would still crank that Bosch (yes, my GS had a temporary Bosch) for a minute or so. Just not as fast as when it's nice weather out.

Now that I've ditched the Bosch for something modern and fitted a new Odyssey, it's a piece of cake. NO problem cranking a boxer whatsoever...

I've also used an 8Ah Honda Dominator battery to start the GS (with the stock Valeo at the time). This works too, but is a bit marginal in that it has to catch in 1-2 tries or it's flat.
__________________
'92 R100GSPD
Two Bings to rule them all, Two Bings to ride them,
Two Bings to bring it all and in the twisties grind them.
In the land of Bavaria, where the boxers ride...
(Gandalf the oil-stained)
Screaming Chicken is offline   Reply With Quote
Old 04-20-2015, 02:44 PM   #5
DrManhattan OP
Adventurer
 
Joined: Aug 2014
Location: Salt Lake City, UT
Oddometer: 28
This is the battery I'm talking about.. http://shop.odysseybattery.com/p/pc680-p

I know it's not tiny, but the dimensions look right for the place I want to put it.
DrManhattan is offline   Reply With Quote
Old 04-20-2015, 03:31 PM   #6
Warin
Retired
 
Joined: Aug 2012
Oddometer: 2,223
What was the CCA of the original battery ? 110? ...
Think you'll find anything over 110 will be fine.
Warin is offline   Reply With Quote
Old 04-20-2015, 04:20 PM   #7
photomd
Studly Adventurer
 
photomd's Avatar
 
Joined: Sep 2007
Location: The Land of Cotton (SC)
Oddometer: 739
I had one in my R100RS for about 6-7 years...two actually. They worked well, especially above 35F. I did replace it with the bigger battery because I ride this bike in the winter and if the bike was outside and it was less than 35, the PC680 would crank pretty slowly. Several times I had to push start the bike. This only happed after the battery was at least 3 years old. So I now have the larger battery which is about a year old: no trouble starting in the cold this winter. I have one in my oilhead and the 680 last 3-4 years before I start getting ABS defaults. So I think it's good for an R100 unless you need to start it in cold conditions.
__________________
1979 V-1000SP
1988 R100RS
1996 R1100RSL
1998 CR250
photomd is offline   Reply With Quote
Old 04-20-2015, 06:04 PM   #8
Stan_R80/7
Beastly Gnarly
 
Stan_R80/7's Avatar
 
Joined: May 2012
Location: VA
Oddometer: 1,494
The OEM battery for my '78 was a Yuasa y60-n24al-b: http://www.batteryweb.com/motorcycle...el=Y60-N24AL-B

It's a big honking battery with 300 CCA and 28 AH capacity. I got aggravated with it because acid would drip on my left exhaust pipe during sharp turns. A PC680 solved that problem, but it's not as big of a battery.

Stan_R80/7 is offline   Reply With Quote
Old 04-20-2015, 07:12 PM   #9
bmwrench
Beastly Adventurer
 
Joined: Nov 2006
Oddometer: 2,184
The PC680 will start R1100s and R1150s, bikes notoriously difficult to start. It's about the same size as the battery used in /5s, early R65s, etc. If you want a battery that fills the tray on a /6, etc., get a PC925L. That thing would probably start a bulldozer.
bmwrench is offline   Reply With Quote
Old 04-20-2015, 07:18 PM   #10
pne
Studly Adventurer
 
pne's Avatar
 
Joined: Mar 2007
Location: Alberta, Canada
Oddometer: 865
I use a 680 in my car and it starts that 2L I4 just fine. Once I tried to run it down and 30 stop/starts later I gave up.
__________________
Touring USA on a KTM Superduke, I have no idea what I'm doing:
http://advrider.com/forums/showthread.php?t=890358
pne is offline   Reply With Quote
Old 04-21-2015, 07:16 AM   #11
DrManhattan OP
Adventurer
 
Joined: Aug 2014
Location: Salt Lake City, UT
Oddometer: 28
Good stuff guys, just placed the order. Thanks!
DrManhattan is offline   Reply With Quote
Old 04-21-2015, 08:09 AM   #12
RayB
Adventurer
 
Joined: Apr 2009
Oddometer: 80
I have two older PC680s, 6 and 5 years old respectively. They were rated 22o CCA. The oldest is a spare. Second oldest in my R100. The newest, about a year old is only rated 170. It starts and runs my Guzzi EV 1100 just fine.

Its funny how they de-rated the PC680 but didn't lower the price..just the opposite.

In either case, it should work just fine in your airhead
RayB is offline   Reply With Quote
Old 04-21-2015, 08:31 PM   #13
Tobz
Ne'er-du-well
 
Tobz's Avatar
 
Joined: May 2009
Location: WI
Oddometer: 318
I live in WI and my last PC680 wouldn't crank my R100GS when it was 40 degrees or colder. Battery load tested fine and was less than a year old. I replaced it with a 500cca Harley battery which was a direct fit. WOW, what a difference. Now it cranks like I could ride it to the next town over on just the starter. Before I added an ignition switched relay to my aftermarket heated grips, I once forgot and left them on for 9 hours as I was at work. Temp was in the 30's that day it still started no problem. I'm sold. They're even made in USA.

Tobz is offline   Reply With Quote
Old 04-21-2015, 09:53 PM   #14
squish
Out of the office.
 
Joined: Dec 2003
Location: Where the Ghetto meets the sea.
Oddometer: 6,318
My PC680 cranks both the R100 and the R80 just fine and with a bit more authority then the old flooded battery it replaced.

Happy enough that I will be buying it again when the time comes around for that to happen.
__________________
On vacation for a spell
squish is offline   Reply With Quote
Old 04-22-2015, 01:30 AM   #15
190e
Studly Adventurer
 
Joined: Feb 2013
Oddometer: 756
A batteries CCA and it's internal resistance are inversely proportional. I notice the PC680 is now listed as 7 mOhms which while still low is a lot higher than the 2 mohms for a PC925 mentioned in the EME compatibility thread. Perhaps that explains the reduction in CCA.

http://www.advrider.com/forums/showthread.php?t=1058903
__________________
A man haunted by a fixed idea is insane. He is dangerous even if that idea is the idea of justice - Joseph Conrad

190e screwed with this post 04-22-2015 at 01:44 AM
190e is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 02:35 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2015