BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down    A gel battery the right size on Tue Dec 26, 2017 7:49 pm

RicK G

avatar
VIP
VIP


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

2Back to top Go down    Re: A gel battery the right size on Tue Dec 26, 2017 8:46 pm

Laitch

avatar
Life time member
Life time member
What's not to like? It's got crystals; everybody knows how powerful they are. It's got gel, which is certainly more stable than pudding. It's premium; that's better than second quality. It has a dramatic depiction of a toothy feline drawn on the case to appeal to cat fanciers. It's named after a Australian horror film character that devoured people—a quality to be sought, certainly—and any University of Arkansas alumnus would be happy to own one too, if only it could be shipped to the USA.

To cap it all, it's suitable for toys. cheers


__________________________________________________
1995 K75T 68,000 miles
    

3Back to top Go down    Re: A gel battery the right size on Wed Dec 27, 2017 3:17 am

MartinW

avatar
Life time member
Life time member
Rick I just fitted a Dynavolt Nano Gel MG 53030 BMW53030. Fits fine except had to twist the leads 90 deg to get it to fit. $183.00 Au bought from Team Moto Virginia. I was going to fit a Motobatt but struck a couple of reports that the quality had fallen off.
Regards Martin.

    

4Back to top Go down    Re: A gel battery the right size on Wed Dec 27, 2017 5:53 am

BobT

avatar
Life time member
Life time member
Just use a hawker Odyssey PC680 that is half the size of the K100 and the same size as a K1100. Fits the battery tray and they are honest enough to tell you the cranking amps (CCA). The amp/hr rate has little meaning in a starter battery.
You could also ask Crystal Gel what the CCA of that battery is, but I would expect them to print that info on the battery if it was any good.

    

5Back to top Go down    Re: A gel battery the right size on Wed Dec 27, 2017 6:59 pm

Two Wheels Better

avatar
Moderator
Moderator
Though relatively expensive, BMW's own 61 21 2 346 800 is an actual silica-type GEL cell battery. It's the universal battery number 53030 size (the smaller of the two steps in the K100/K75 battery tray).

Though not a GEL, but an AGM, I love my Hawker Energy Odyssey PC680 for durability, longlife and cranking power. I've seen 'em last for up to ten years. I have an extra I use as a workshop power source for air pumps, etc. I was given it in 2012 after it was taken out of a police R1150RT, the jacket had swollen up so it was warranteed. I took it home after 18 months on the dealer's to-be-thrown-away shelf and it holds an honest 12.6 volts right now. I give it a charge up once or thrice a year after shop use.


__________________________________________________

1987 K100RS, '93 Framed K11/K12 engine 'Big Block', '09 K1300GT, '07 K1200R, '04 R1150RT, '95 R100 Mystic, '77 R75/7.
Sniff...can you smell that? I think it might be bullsh*t.

    

6Back to top Go down    Re: A gel battery the right size on Wed Dec 27, 2017 8:03 pm

indian036

avatar
Life time member
Life time member
@BobT wrote:Just use a hawker Odyssey PC680 that is half the size of the K100 and the same size as a K1100. Fits the battery tray and they are honest enough to tell you the cranking amps (CCA). The amp/hr rate has little meaning in a starter battery.
You could also ask Crystal Gel what the CCA of that battery is, but I would expect them to print that info on the battery if it was any good.

I agree that Cold Cranking Amps is a critical value in a starter battery.

Does anyone have authoritative information on what the CCA requirements are for our K bikes? I've not seen it in any manuals, though that may be just my blindness.

Another question relates to Rick's original post - the battery is labelled further into the ad as a deep cycle battery. Will that compromise it's effectiveness, particularly long term, as a starting battery?

Bill


__________________________________________________
1985 K100RT  VIN 0028991  My original Very Happy   (Historic rego)
1985 K100RT  VIN 0029036  BOB the Blue Old Bike  (Historic rego)
1990 K100LT  VIN 0190452  Work in progress
1984 K100RT  VIN 0023022  Work needing lots of progress

1986 K100RT  VIN 0090542  Work needing lots and lots of progress
1993 K1100LT  VIN 0183046  Work in progress
1993 K75S  VIN 0213045  Newest toy, slightly non-original
    

7Back to top Go down    Re: A gel battery the right size on Wed Dec 27, 2017 9:02 pm

Point-Seven-five

avatar
Life time member
Life time member
Deep cycle batteries have a different plate design from starting batteries that reduces slightly(I think 20-25%) the cold cranking amps.  Since these batteries are intended for providing moderate current flows over long time periods they are not usually rated for CCA.

As far as starter current requirements, I vaguely recall seeing 255 CCA a the rquired battery capacity and 20AH(amp hours).


__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

8Back to top Go down    Re: A gel battery the right size on Wed Dec 27, 2017 11:00 pm

robmack

avatar
Life time member
Life time member
@indian036 wrote:[Does anyone have authoritative information on what the CCA requirements are for our K bikes? I've not seen it in any manuals, though that may be just my blindness.
If you look up the specs on the OEM battery - Yuasa 53030 -- you'll note the CCA is 325 Amps and the nominal capacity is 20AH.  You should select a replacement within these electrical specifications but not exceed a mechanical height of 171mm.  There are a large selection of technologies within this range.


__________________________________________________
Robert
1987 K75 @k75retro.blogspot.ca
2011 Moto Guzzi V7 Racer
http://k75retro.blogspot.ca/
    

9Back to top Go down    Re: A gel battery the right size on Thu Dec 28, 2017 4:25 am

Inge K.

avatar
VIP
VIP
When did Yuasa start as a supplier to BMW?


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

10Back to top Go down    Re: A gel battery the right size on Thu Dec 28, 2017 5:52 am

MartinW

avatar
Life time member
Life time member
Dynavolt specifications.
Factory Activated Sealed AGM Lead Acid Series with Nano-Gel electrolyte technology.
No messing around with battery acid - just fit and go!

12 Volt 28Ah Capacity [Cranking Amps 490]
Dimensions (mm) - L 178 x W 123 x H 166
Terminal configuration - Negative [Black] LH front polarity
Terminal type - T 3 LEAD construction.

Regards Martin.

    

11Back to top Go down    Re: A gel battery the right size on Thu Dec 28, 2017 7:57 am

RicK G

avatar
VIP
VIP
@robmack wrote:
@indian036 wrote:[Does anyone have authoritative information on what the CCA requirements are for our K bikes? I've not seen it in any manuals, though that may be just my blindness.
If you look up the specs on the OEM battery - Yuasa 53030 -- you'll note the CCA is 325 Amps and the nominal capacity is 20AH.  You should select a replacement within these electrical specifications but not exceed a mechanical height of 171mm.  There are a large selection of technologies within this range.
Deepest apologies for bringing a touch of logic into this but a K100 starter relay is rated at 75A and the starter draws around 50A when cranking a hot engine, so I would say that any battery that has a CCA of 325A would be quite adequate for the job. The initial current draw could be up to 150A but certainly not anywhere near 325A.
A smaller battery like a 10AH with 200CCA would start the bike in ideal conditions but if a bit extra was needed at some time, like a very cold morning, then it wouldn't take much cranking before it died.


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

12Back to top Go down    Re: A gel battery the right size on Thu Dec 28, 2017 8:16 am

BobT

avatar
Life time member
Life time member
I very much doubt if there are any CCA requirements laid down for any K bikes. There is no point in having a battery so high and heavy that it supplies twice as many CCA as is requires to start the engine, as that is all the battery does, start the engine.
Not that the old huge wet battery that was fitted to the K100 was superseded by BMW with a half the physical size and weight, gel or AGM battery as they have just as much CCA power as the old one. 
If my big high compression twin cylinder Ducati can make do with quite a small battery then then my lower compression four cylinder K100 would have no problem with the same battery. 
Batteries have come on a long way since they made the K100, like tyres and oil, use the latest and best rather than to old rubbish and you won't go wrong.
As an aside, I tried a lithium battery in the Ducati, weight of the original Yuasa was 3.6 kgs, lithium was 0.6 kgs. The lithium has more cranking amps and starts the bike with no problem.

    

13Back to top Go down    Re: A gel battery the right size on Thu Dec 28, 2017 8:41 am

RicK G

avatar
VIP
VIP
I use a Motobatt 32AH but for running my CPAP machine and it will run all night and I know that it will start next day where the smaller 20AH it can get a bit marginal if I am using it for lighting as well.
Under more normal circumstances the 20AH is quite up to the job.


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

14Back to top Go down    Re: A gel battery the right size on Thu Dec 28, 2017 8:43 am

indian036

avatar
Life time member
Life time member
My suspicion is that the electrical engineers at BMW would have been fully aware of the CCA requirements of the engine/starter motor in all conditions, including German winters!

It was an era, however, when automotive batteries of all kinds we're overwhelmingly lead-acid, and amp hours were fairly directly related to the battery CCA. Consequently, the KISS (keep it simple, stupid) principle was applied. Conversely, my 10 year old Evinrude outboard's owners manual warns in big letters that you will have problems if your battery has less than X CCA.

I suspected that the original battery CCA was well above the minimum, as confirmed by Rick. When I replace the dead battery on my original old faithful, I'll err on the side of caution. But I'm still curious about the actual requirements. 😀

Bill


__________________________________________________
1985 K100RT  VIN 0028991  My original Very Happy   (Historic rego)
1985 K100RT  VIN 0029036  BOB the Blue Old Bike  (Historic rego)
1990 K100LT  VIN 0190452  Work in progress
1984 K100RT  VIN 0023022  Work needing lots of progress

1986 K100RT  VIN 0090542  Work needing lots and lots of progress
1993 K1100LT  VIN 0183046  Work in progress
1993 K75S  VIN 0213045  Newest toy, slightly non-original
    

15Back to top Go down    Re: A gel battery the right size on Thu Dec 28, 2017 8:55 am

Chocolate

avatar
Life time member
Life time member
Hello!

I’m using a AGM Battery 12V, 18 AH, [url=Kung Long WP 18-12]Kung Long WP 18-12[/url] used for solar panels. Works in winter as in summer. Cheep and good.
With and without ABS.

https://cdn-reichelt.de/bilder/web/xxl_ws/D600/WP18_12I.png

You’ll find it on eBay.

Cheers


__________________________________________________
Only a few activities make me experience my senses in a way motorcycle riding does, it is like swimming in the nude in a river.
K75 BA/1992 ABS, K75 BA/1991 noABS, Ducati, Mobylette M1/1973
    

16Back to top Go down    Re: A gel battery the right size on Thu Dec 28, 2017 1:04 pm

Dai

avatar
Life time member
Life time member
I have a 32aH Motobatt on mine - been there for about six years and has never needed recharging 'off the bike'.

To add to Rick's comments about CCA: I can quote the older Guzzi T-series requirements. Guzzi stated 400 CCA (for initial surge) but just 90A when cranking actually gets underway. They fitted a 28aH lead-acid battery to the original Le Mans 1 series 1 but that was marginal if the engine didn't want to play. From the Le Mans 1 series 2 (and all other T-series) it was upgraded to a 32aH Lead acid. Now, IIRC, the battery specified by BMW for the K100 was the same as the one specified by Moto Guzzi for the Le Mans 1 series 1. That's an IIRC - I'm sure Inge will know! Very Happy



Last edited by Dai on Thu Dec 28, 2017 8:44 pm; edited 1 time in total


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

17Back to top Go down    Re: A gel battery the right size on Thu Dec 28, 2017 8:14 pm

RicK G

avatar
VIP
VIP
In Australia the 18AH lead acid battery was the standard size for an of the shelf purchase of any of the K100s and K75s the Police bikes had a 28AH lead acid. The larger 28AH was an extra at time of purchase and I think but will stand corrected that the later K100LTs had the larger battery as standard.


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

18Back to top Go down    Re: A gel battery the right size on Thu Dec 28, 2017 8:48 pm

Dai

avatar
Life time member
Life time member
Thanks Rick - my post corrected re: the Le Mans series. I've seen the 28aH in an LT and both LFB and Brick 2 also had one. In the case of LFB ('83 K100) I was told that the 28aH battery had been in there from new. It was certainly scruffy enough and completely fecked. I can't speak for Brick 2 (the one I got from ComberJohn).


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

19Back to top Go down    Re: A gel battery the right size on Fri Dec 29, 2017 4:10 am

Inge K.

avatar
VIP
VIP
@Dai wrote: They fitted a 28aH lead-acid battery to the original Le Mans 1 series 1 but that was marginal if the engine didn't want to play.
Now, IIRC, the battery specified by BMW for the K100 was the same as the one specified by Moto Guzzi for the Le Mans 1 series 1. That's an IIRC - I'm sure Inge will know! Very Happy

About what was factory fitted from new, in the good old days.......

When did get my RS it was a 30 Ah battery mounted (which did last 9 years and 2 months).
That was extra/police spec, the standard version was 25 Ah.

But this could vary with which market a bike was produced for.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

20Back to top Go down    Re: A gel battery the right size on Fri Dec 29, 2017 9:28 pm

Two Wheels Better

avatar
Moderator
Moderator
A thread can take any number of divergent paths from the original poster's intention, which was simply a GEL cell battery at a price. However, we can all use practical info on a particular subject, especially if it strays only slightly from the original subject.

I was chucking cardboard and paperwork into the recycle bin in a sort of year-end clean out of my garage, and found a Yuasa field guide. It contained some pertinent info and so I thought I'd pop a coupla piccies up here that follow the vein of CCA being discussed. Gents, for your persual, I present two pages from Yuasa's 2016 product manual:


The above battery is the "smaller" version of the two which fit the K75/K100/K1100 trays and measures 186mm x 82mm x 171mm (7.4375" x 3.25" x 6.875"). This YT19BL-BS is rated at 170CCA @ -18c and 440CCA at ambient temps.


__________________________________________________

1987 K100RS, '93 Framed K11/K12 engine 'Big Block', '09 K1300GT, '07 K1200R, '04 R1150RT, '95 R100 Mystic, '77 R75/7.
Sniff...can you smell that? I think it might be bullsh*t.

    

21Back to top Go down    Re: A gel battery the right size on Sat Dec 30, 2017 8:48 am

BobT

avatar
Life time member
Life time member
And if you go for the YTX range instead of the old YT range they are even better.
For example a YTX14-BS is a 20 Ah battery with smaller dimensions that the above but with 200 CCA at -18°. If that is good enough to start a 1200cc Ducati twin with a compression ratio of 12.5 to 1, then it will start a K with no problem. 
It is the battery that I have been running my K on.

    

22Back to top Go down    Re: A gel battery the right size on Sat Dec 30, 2017 12:55 pm

MartinW

avatar
Life time member
Life time member
On special now at Supercheap.
Katana Powersports Battery - YTX14-BS
322321




1 Rating Write a review

[size=18]Was
Now [size=24] $114.39 each Ends 12/01/18
Regards Martin.[/size][/size]

    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum