BMW K bikes (Bricks)

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ssj_Gill

ssj_Gill
active member
active member
So a year and a half ago my k100LT had a tiff and broke. I've since stripped the engine and fixed the original problem, blah blah blah

Finally got everything back into what i thought was good shape for its first start up since the rebuild. connected the battery which has been on trickle charge, clocks come back on. very excitedly i turn the key and press the starter and... litterally nothing. lights on the dashboard die, no buzzing, no whurring, nothing!

put the battery back on trickle charger to see what the readings are. it should be 12V - 19amps. instead it reads 14V - 0.83amps

the battery was new before the engine problems so has basically been on trickle changer for a year and a half... does this mean its goosed? ive no idea what the difference between volts and amps is

this all happened late last night and i was too tired and distraught to start a full investigation

    

RicK G

RicK G
admin
admin
You cant leave a battery on a trickle charger that is a charger that puts a continuous charge into it for any length of time or the battery will be damaged. What is needed is a smart charger which monitors the state of the battery and if needed gives a bit of a boost. I have seen quite a few trickle chargers advertised so as to lead one to think it is OK to leave it on all the time.
We have all done these things so don't feel too much of a plonker but unfortunately the battery is duff.
The best thing is to connect a trickle charger about twice a month for 4 hours and that will keep it charged and not damage it.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

ssj_Gill

ssj_Gill
active member
active member
poor little battery. i brought it into this world, and i killed it Sad

well as long as i know what the problem is i can fix it and get over it

since i'm going to need a new power supply can anyone recommend the smallest lightest battery possible to use with the K100? The one i have in it now is a mighty beast

    

RicK G

RicK G
admin
admin
There are 2 sizes for the K100, if you look in the battery tray you will see the recess for a smaller battery in the tray.
From memory the big one was 24 AH and the smaller 18AH.
Lithium batteries are very light but I decided to not use one because there is a possibility of them exploding, not a big possibility but when they do explode they burn with a very hot and nasty fire, that said they do pack one hell of a punch for their size and as well they are expensive compared with other batteries.
I use an AGM type and have just replaced it after 8 years, a Motobatt.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

92KK 84WW Olaf

avatar
Life time member
Life time member
I wont use lithium batteries. Had 2 phones do it so far and its not nice. They put them in aircraft too.........one of them destroyed a B767 that's kept very quiet because it happened on the ground. If you read the report on it you will see it explains MH370 too.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

RicK G

RicK G
admin
admin
That would be very interesting to read Olaf do you have a link.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

92KK 84WW Olaf

avatar
Life time member
Life time member
I went looking for it and couldn't find it and will have another look. But I remember reading it, located under the cockpit starboard side, the fire perforated the fuselage which would cause a decompression, also killed the radio equipment. I didn't initially give it huge credibility initially but when MH370 went missing there wasn't a single comment from Boeing where normally one would have some comment. I saw how they fail in phones too and it makes me uneasy because it would need serious protection to prevent it causing damage.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

kioolt

kioolt
Silver member
Silver member
@ssj_Gill wrote:put the battery back on trickle charger to see what the readings are. it should be 12V - 19amps. instead it reads 14V - 0.83amps

the battery was new before the engine problems so has basically been on trickle changer for a year and a half... does this mean its goosed? ive no idea what the difference between volts and amps is
Before you go out and buy a new battery try the following.

Put a voltmeter on the battery while trying to start it.  That will give you better knowledge of the condition of the battery.  If the batter voltage stays up when you have the problem that you described, then your battery is not your problem. 

And by the way you won't see the 19amps on your charger meter.  A 19 amp/hour battery can draw 19 amps for 1 hour before it is considered dead.  I believe that is what the rating means.


__________________________________________________
2004 R1150RT 186,800 miles 
1991 K100LT 128,700 miles
1982 R100RT 106,900 miles
Total 422,400 BMW miles

AMA,BMWRA,BMWMOA


The cheapest thing on a BMW is the nut that connects the handlebars to the seat.
    

Holister

Holister
Life time member
Life time member
@92KK 84WW Olaf wrote:I wont use lithium batteries. Had 2 phones do it so far and its not nice. They put them in aircraft too.........one of them destroyed a B767 that's kept very quiet because it happened on the ground. If you read the report on it you will see it explains MH370 too.
Boeing have had a few problems with lithium battery fires accross the board including the Dreamliner


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
  Am i a plonker or is my battery duff?! Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

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