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Thread: Electrics cut out completely while riding - likely causes?

  1. #1
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    Electrics cut out completely while riding - likely causes?

    So on my way home today was happily riding along, everything normal, when the bike cut out altogether and I had to coast to the side of the road.

    The bike was completely dead, no dash lights, nothing. No response to turning the ignition key, nothing from the starter. I checked the battery connections which were tight and had a cursory look at the fuses which seemed fine to me (but I dont really know what Im looking at and may have missed some). Tow truck driver said it sounded like maybe the alternator has died?

    Anyone able to shed any light on what the might be problem so I can work out what to do next? Bike is a 2014 Honda NC750X with 40,000kms on the clock.

    Many thanks in advance.
    Moe: Well, I'm better than dirt. Well, most kinds of dirt. I mean not that fancy store bought dirt. That stuffs loaded with nutrients. I...I can't compete with that stuff.
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  2. #2
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    If it was a fuse, it would be the main fuse if everything died. Which is typically located near the battery and main electrics, not in the normal fuse box. And if that fuse has blown you will want to know why.
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  3. #3
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    Quote Originally Posted by onearmedbandit View Post
    If it was a fuse, it would be the main fuse if everything died. Which is typically located near the battery and main electrics, not in the normal fuse box. And if that fuse has blown you will want to know why.
    OK great, have located it now due to the wonder that is the internet, will check it in the morning (thanks).
    Moe: Well, I'm better than dirt. Well, most kinds of dirt. I mean not that fancy store bought dirt. That stuffs loaded with nutrients. I...I can't compete with that stuff.
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  4. #4
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    Main fuse looks fine to me. Any other suggestions?
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    Moe: Well, I'm better than dirt. Well, most kinds of dirt. I mean not that fancy store bought dirt. That stuffs loaded with nutrients. I...I can't compete with that stuff.
    - The Simpsons

  5. #5
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    OK so just confirmed the battery won't hold a charge at all, it's a two year old 'Poweroad' Nano Gel one. Didn't realise batteries could fall off a cliff like that.

    Bit of a relief, now just have to get a new one.
    Moe: Well, I'm better than dirt. Well, most kinds of dirt. I mean not that fancy store bought dirt. That stuffs loaded with nutrients. I...I can't compete with that stuff.
    - The Simpsons

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    Quote Originally Posted by nerrrd View Post
    OK so just confirmed the battery won't hold a charge at all, it's a two year old 'Poweroad' Nano Gel one. Didn't realise batteries could fall off a cliff like that.

    Bit of a relief, now just have to get a new one.
    Modern batteries do often fall off the cliff like that.

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    Other candidates the ignition switch falling apart (had that happen). Lead falling off the battery could produce odd effects.

    Alternator failure would eventually stop it but you'd have some residual battery power idiot light etc.
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    Quote Originally Posted by nerrrd View Post
    OK so just confirmed the battery won't hold a charge at all, it's a two year old 'Poweroad' Nano Gel one. Didn't realise batteries could fall off a cliff like that.

    Bit of a relief, now just have to get a new one.
    Buy a Yuasa. More expensive but it will last longer and is unlikely to fail like that.

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    Quote Originally Posted by SaferRides View Post
    Buy a Yuasa. More expensive but it will last longer and is unlikely to fail like that.

    Been waiting since July for a new Yuasa....

  10. #10
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    Quote Originally Posted by SaferRides View Post
    Buy a Yuasa. More expensive but it will last longer and is unlikely to fail like that.
    Concur. I've had over 8 years on a Yuasa. But see above.

    What a state of affairs!
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  11. #11
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    OK so battery confirmed DOA after taking it into AJ at Motohaus (excellent advice as usual) but he didn't have one so ended up having to hike over to Colemans Suzuki who did (just replaced like for like as I'm a bit financially challenged at the moment). Supplies are very constrained all round apparently. New battery is in and bike started first pop and ran happily for five minutes or so.

    Feel very lucky that it crapped out when I was on a nice straight road, at the top of a hill, with plenty of room to coast to a stop. Would have been interesting to say the least if it had happened leaned over while accelerating through a corner.
    Moe: Well, I'm better than dirt. Well, most kinds of dirt. I mean not that fancy store bought dirt. That stuffs loaded with nutrients. I...I can't compete with that stuff.
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  12. #12
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    Quote Originally Posted by nerrrd View Post
    OK so battery confirmed DOA after taking it into AJ at Motohaus (excellent advice as usual) but he didn't have one so ended up having to hike over to Colemans Suzuki who did (just replaced like for like as I'm a bit financially challenged at the moment). Supplies are very constrained all round apparently. New battery is in and bike started first pop and ran happily for five minutes or so.

    Feel very lucky that it crapped out when I was on a nice straight road, at the top of a hill, with plenty of room to coast to a stop. Would have been interesting to say the least if it had happened leaned over while accelerating through a corner.
    Might be worth your time (just to make sure it was only the batt) putting a multi-meter across it, make sure it's putting out the 14-ish volts when running
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    Quote Originally Posted by nerrrd View Post
    OK so battery confirmed DOA after taking it into AJ at Motohaus (excellent advice as usual) but he didn't have one so ended up having to hike over to Colemans Suzuki who did (just replaced like for like as I'm a bit financially challenged at the moment). Supplies are very constrained all round apparently. New battery is in and bike started first pop and ran happily for five minutes or so.

    Feel very lucky that it crapped out when I was on a nice straight road, at the top of a hill, with plenty of room to coast to a stop. Would have been interesting to say the least if it had happened leaned over while accelerating through a corner.
    Quote Originally Posted by Scuba_Steve View Post
    Might be worth your time (just to make sure it was only the batt) putting a multi-meter across it, make sure it's putting out the 14-ish volts when running
    Yep, like Scoober commented, I'd be wondering about alternator and reg/rec. New batteries going DOA in short space of time is odd, but not unheard of.
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  14. #14
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    Quote Originally Posted by Scuba_Steve View Post
    Might be worth your time (just to make sure it was only the batt) putting a multi-meter across it, make sure it's putting out the 14-ish volts when running
    Quote Originally Posted by caspernz View Post
    Yep, like Scoober commented, I'd be wondering about alternator and reg/rec. New batteries going DOA in short space of time is odd, but not unheard of.
    So is it possible for the bike's charging system to damage a battery over time?

    Because the old battery wouldn't hold a charge at all in the bike (even when the bike was jump started and running, as soon as the jumper was disconnected it died), but then showed a full charge when put on a charger. So the general consensus was it was stuffed.

    I don't have a multimeter but could pick up a cheap one.
    Moe: Well, I'm better than dirt. Well, most kinds of dirt. I mean not that fancy store bought dirt. That stuffs loaded with nutrients. I...I can't compete with that stuff.
    - The Simpsons

  15. #15
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    Yes, my battery was cooked because of stator cooking itself which in turn damaged the regulator. Battery died beyond repair. Everything had to be replaced (thankfully bike was still under warranty).

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