Battery

Discussion in 'Tech Talk' started by Mad Dog 1, Jul 7, 2018.

  1. Mad Dog 1
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    Mad Dog 1 Staff Member Moderator

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  2. PK
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    PK Member

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    I ordered one about 3 days ago. Will post when it gets here.
  3. Hopper
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    Hopper Supporter Member

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    Watching post
  4. Marno
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    Marno Member

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    I bought one the next size up a few months ago, works well.


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  5. Griff
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    Griff Supporter Member

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    My rule for buying lithium is go 25% more CCA.
    See if you can find a GenZ lithium battery
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  6. PK
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    PK Member

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    Mine got here today
    It's tiny:
    [​IMG]

    And weighs 1kg
    [​IMG]

    Too good to be true?

    I'll put it in this weekend...
    PK
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  7. SeannesM109R
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    SeannesM109R Staff Member Moderator Supporter

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    Yer, I had one of these, it was ok in warm months and fail through cold months. Went the next size up, it was better but I would occasionally have issues.

    Not sure I would buy one again.
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  8. PK
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    PK Member

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    I'm very tempted to pull it apart and have a peek at how they get a 12.4V battery to charge from a 15V supply... I suspect it's gonna be nasty cheap...
  9. JB
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    JB Supporter Member

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    Yeah, I’ve heard that they don’t like the cold.
  10. onlinebike
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    onlinebike Member

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    Yep, ive got one of these, i wont get one again. Had it about 18mths, nice and small, i like. But DOES NOT like the cold. Couldnt start my bike in “Hill End” NSW, had to leave later than i was wanting to, as i had to wheel my bike into the sun and leave it for a while.

    Good for a track bike though.

    Stop eating pies is a better way to get the weight of your bike down.
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  11. Mad Dog 1
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    Mad Dog 1 Staff Member Moderator

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    Decided to go with a Gel 340 Cold Crank
    cause when your as fat as Me
    1 or 2 Kilos wont make any difference
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  12. fatzuk
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    fatzuk Member

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    I ran a Shorai for a while. On cold days I found leaving the ignition on for 30 seconds before cranking helped.


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  13. Hopper
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    Hopper Supporter Member

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    loven this thread talk of cold cranking 30 seconds before cranking. gold
  14. Mad Dog 1
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    Mad Dog 1 Staff Member Moderator

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  15. PK
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    PK Member

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    Couldn't help myself, so this is just a 4S Li<something> battery. It says "Max charging voltage 14.6V" on the box, which makes it 3.65v/cell , so it's almost certainly LiFePO, ie Lithium iron phosphate..
    The little PCB is just to balance the charge between the cells. Actually not too shitty. I'll run with it and add more cells if she struggles on a cold morning.
    PK

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  16. fatzuk
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    fatzuk Member

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    Works at the end of the day no battery is really keen at negative temps.

    The Shorai would always fire the 9 even in sub zero temps and you could hear it being just a fraction slower.


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