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K100-forum.com » Technical, repair and troubleshooting » Electrical » Dead Battery??

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1Back to top Go down   Dead Battery?? Empty Dead Battery?? Fri Oct 25, 2013 5:31 pm

sudhirjin

sudhirjin
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I started my k100rs 16v  today after a month. It started right away and i left it on idle for 20 mins or so and switched it off and when i tried to start again the starter begun to crank but acted as if disconnected and tuk tuk  solenoid sounds and when i tried it a few times now it acts like the battery is dead completely. but i can see the lights going on but it looks like it didn't have enough power to start the motor. I thought that leaving 20 mins on idle might charge the battery wont it?? i am confused, it the battery really dead or some other issue??

    

2Back to top Go down   Dead Battery?? Empty Re: Dead Battery?? Fri Oct 25, 2013 6:04 pm

Rob Roy Mcgregor

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do you have a test meter ?

    

3Back to top Go down   Dead Battery?? Empty Re: Dead Battery?? Fri Oct 25, 2013 6:16 pm

sudhirjin

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I just tested and it shows 12.20 v and if i switch the key and kill switch on, it shows 10 and lowering. ! 

can i bump start? or jump start with a car battery?? which is better?

    

4Back to top Go down   Dead Battery?? Empty Re: Dead Battery?? Fri Oct 25, 2013 6:22 pm

Rob Roy Mcgregor

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jump start be carefull not to touch the frame with the positive cable and take the leads of and if you can measure the volts while its running ,

    

5Back to top Go down   Dead Battery?? Empty Re: Dead Battery?? Fri Oct 25, 2013 6:35 pm

92KK 84WW Olaf

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When you started the bike did you rev it at all so that the red charge light went out? If you just hit the start button and leave it running it wont charge the battery at all but will drain it.


__________________________________________________
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 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 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
    

6Back to top Go down   Dead Battery?? Empty Re: Dead Battery?? Fri Oct 25, 2013 6:47 pm

sudhirjin

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Hmm, I didn't rev it at all. i just let it sit idle! But happy that its just the battery and not something else!!

    

7Back to top Go down   Dead Battery?? Empty Re: Dead Battery?? Fri Oct 25, 2013 6:50 pm

Guest

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Worst thing that you could do to an engine is to start it and leave it to idle. I believe that the handbook even says not to do that.

    

8Back to top Go down   Dead Battery?? Empty Re: Dead Battery?? Fri Oct 25, 2013 7:35 pm

duck

duck
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Voltage means very little.  Take your battery into any auto parts store to ask them to "load test" it which they will do for free.  (They do it for free because it helps them sell batteries.)

You can jump start it from a car or bump start it.  

I can jump one with the output from a 6A battery charger - connected to the battery terminals, not through the Powerlet outlet.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

9Back to top Go down   Dead Battery?? Empty Re: Dead Battery?? Fri Oct 25, 2013 7:41 pm

sudhirjin

sudhirjin
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SO can i jump start it by connecting to a 12v adapter ?? i mean connected to the battery directly?

    

10Back to top Go down   Dead Battery?? Empty Re: Dead Battery?? Fri Oct 25, 2013 7:55 pm

duck

duck
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I have no idea what you mean by "12V adapter" but whatever you use to jump it you'll need something that puts out enough amps and wire thick enough to support those amps.

Jumping it from a car with jumper cables is probably easiest.  Just don't let the 12V from the jumper cables come in contact with the frame or other metal parts of the bike.  It's usually a good idea to hook the positive cable up first.  You can put the ground of the jumper cables on the left side transmission mounting bolt and it will work since the starter motor grounds to the transmission housing.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

11Back to top Go down   Dead Battery?? Empty Re: Dead Battery?? Fri Oct 25, 2013 9:48 pm

sudhirjin

sudhirjin
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Thank you!

    

12Back to top Go down   Dead Battery?? Empty Re: Dead Battery?? Fri Oct 25, 2013 9:59 pm

K-BIKE

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When the bike is idling it is probably running the battery down because at idle the alternator does not put out enough to charge the battery so the battery is steadily discharging.
Regards,
K-BIKE

    

13Back to top Go down   Dead Battery?? Empty Re: Dead Battery?? Sat Oct 26, 2013 7:48 am

Avenger GT

Avenger GT
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If you have a US market bike, is the headlight permanently on? If so then the alternator will not put out enough current at idle to run the headlight, fuel pump, engine management etc, and charge the battery at the same time.

    

14Back to top Go down   Dead Battery?? Empty Re: Dead Battery?? Sat Oct 26, 2013 1:55 pm

Rob Roy Mcgregor

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duck wrote:I have no idea what you mean by "12V adapter"

cigarette or pipe lighter next to the ash tray Question

    

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