Amazing what difference the battery makes
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  1. #1
    Senior Member srs713's Avatar
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    My bike had been acting sluggish. The engine bogging down at stop-lights. It took a bit for it to get started.



    And then, after sitting thru a hot spell without riding for a couple of weeks it wouldn't turn the engine over.



    Now (about a month later) with my cash flow looking better I took the battery to the parts store.

    Their test equipment said it could take a charge, but rated it at 0 cold cranking amps... yeah, ZERO.



    Stopped at Allpak & got one of their refabbed batteries for just under $38.



    Even after sitting for about a month the engine started right up. No hesitation. Didn't even have time to hear the starter motor whine.



    Old battery must have been going bad slowly. And taking the bikes performance with it.
    Stephen S.

    '07 TW200:

    15/50 sprockets, O-ring chain, D2Moto foot pegs

    tweaked carb (127.5 jet, 0.019 needle shim, idle screw @2.25),

    Rubbermaid "Action Packer" on homemade brackets

  2. #2
    Member Brad Lamar's Avatar
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    I concur that a weak battery will cause all types of issues other than just poor starting. Replaced mine and could not believe the difference.

    The bike just seemed more lively all around.



    Brad
    Brad Lamar

    2006 TW

    Moose Barkbusters

    Skidplate

    Tusk Risers

    IMS Pegs

    Stearns Seatcover

  3. #3
    Banned qwerty's Avatar
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    Hmmm? My battery is 4 years old and will barely turn the engine over. Sometimes it won't even do that. I've not noticed any engine problems. I've noticed its performance slowly degrading for at least a year. Perhaps you might want to take a little look around your wiring for loose and/or corroded connections. Maybe you can catch something before you are left stranded.




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  5. #4
    Junior Member aktw200's Avatar
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    Yea, my '07 battery gave up the ghost earlier this week. $120 for an Interstate brand, only one in town. Sucks to live up here sometimes.
    2007 TW200, Café Shield, Rear Cyclerack, Ricochet Skid Plate.

  6. #5
    Banned qwerty's Avatar
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    Quote Originally Posted by aktw200 View Post
    Yea, my '07 battery gave up the ghost earlier this week. $120 for an Interstate brand, only one in town. Sucks to live up here sometimes.


    Off brand YTZ7-S equivalent on ebay for $42 including shipping. Two sources/brands from which to choose.




  7. #6
    Senior Member arrowsmith's Avatar
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    Quote Originally Posted by Brad Lamar View Post
    I concur that a weak battery will cause all types of issues other than just poor starting. Replaced mine and could not believe the difference.

    The bike just seemed more lively all around.



    Brad
    You need to explain why. I run my 91 without a battery and it runs fine.

  8. #7
    Senior Member catamount's Avatar
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    Quote Originally Posted by Arrowsmith View Post
    You need to explain why. I run my 91 without a battery and it runs fine.


    So kick start only?



    Are you running with a capacitor then? Details please.
    Check out my custom TW200 build Hidden Content .



    TTR225 SS header, FMF Turbine Core 2 pipe, EK o-ring chain, 15T front sprocket, 50T rear sprocket, 20W fork oil, Drag Specialities speedometer, Victory Vegas headlight, Acerbis universal supermoto front fender, Vintage Yamaha chrome gas cap, Integrated LED rear tail/turn/brake light, Yamaha Blaster shock, Pro Taper SE ATV High handlebar, Western Powersports off-road handguards, Pro Taper Pillow Top Lite grips, Over-sized foot pegs, Maxxis 6006 front tire, seat cover from eBay seller mac32756.

  9. #8
    Senior Member srs713's Avatar
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    Quote Originally Posted by Arrowsmith View Post
    You need to explain why. I run my 91 without a battery and it runs fine.


    You should at least have a capacitor to smooth out the current.



    My problem was with getting wattage (power) out of the battery. It seemed to hold a charge, (volt meter read 12.6 volts) but it registered ZERO cold cranking amps. P=V*I

    There was some kind of problem inside the battery that pulled on the whole charging system, leaving less power for the coil to create spark.



    Bad battery -> weak spark -> incomplete burn -> weak ride.

    Good battery -> strong spark -> more complete burn -> strong ride.



    Stephen S.

    '07 TW200:

    15/50 sprockets, O-ring chain, D2Moto foot pegs

    tweaked carb (127.5 jet, 0.019 needle shim, idle screw @2.25),

    Rubbermaid "Action Packer" on homemade brackets

  10. #9
    Senior Member arrowsmith's Avatar
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    Quote Originally Posted by catamount View Post
    So kick start only?



    Are you running with a capacitor then? Details please.


    When I bought it the battery was missing. I have just never gotten around to buying one. Kick start and no capacitor which could be hard on the charging system. Not sure if it will hurt the charging system or not. The 66 Harley I had did not have a batt. but the system was different.

    I do not ride it much as I have a 2003. I got it for my nephew and he is not old enough to ride on the street yet so ridesit in the woods. Some pictures on Gear Hollow.

  11. #10
    Senior Member arrowsmith's Avatar
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    Quote Originally Posted by srs713 View Post




    You should at least have a capacitor to smooth out the current.



    My problem was with getting wattage (power) out of the battery. It seemed to hold a charge, (volt meter read 12.6 volts) but it registered ZERO cold cranking amps. P=V*I

    There was some kind of problem inside the battery that pulled on the whole charging system, leaving less power for the coil to create spark.



    Bad battery -> weak spark -> incomplete burn -> weak ride.

    Good battery -> strong spark -> more complete burn -> strong ride.



    I do not believe lights care about smooth current. Nothing else is using the charging system.



    Battery has nothing to do with the ignition on a TW. The charging system and the ignition system are two separate systems. Either one will work without the other.





    If it ran better after the battery was installed you have another problem that has nothing to do with the battery.

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