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  1. C

    Watts Up meter setup on battery with separate in/out leads?

    yeah I had one but wanted to measure charge & discharge - didn't know there were other meters that were so cheap
  2. C

    Watts Up meter setup on battery with separate in/out leads?

    Update: Whilst setting up a way to make it much easier to monitor usage, I actually found a bad solder joint on the line between the charger and the battery charging input. This would explain perhaps why I did a charge then drain test this afternoon and got 9.44Ah out of the battery which seems...
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    Watts Up meter setup on battery with separate in/out leads?

    I agreed :) Wanted to get something working to this weekend to help fault find. Got it working ok actually. That's a great price though, I'd just been looking at the cost of the wattsup meter..
  4. C

    Watts Up meter setup on battery with separate in/out leads?

    What did you mean here actually? My battery (Ping) has a different set of Pos/Neg leads for both charge and discharge. Just wanted to check whether it's ok to actually connect the positive together here as part of the design? i.e. therefore with one DPDT switch switch the negatives, but...
  5. C

    Watts Up meter setup on battery with separate in/out leads?

    thanks for the tip! Hadn't realized this
  6. C

    Watts Up meter setup on battery with separate in/out leads?

    thanks for the ideas guys @amberwolf - I was thinking doing a 3-pole arrangement like this might be good so the middle switching position could be used to have the meter disconnected, to make sure you have a way to reset the meter before going from charging to riding. Does this make sense...
  7. C

    Watts Up meter setup on battery with separate in/out leads?

    Any advice on how I could use a single Watts Up meter to make notes on "input Ah" and "output Ah" without having to change connecting between charging and usage? I'm happy to have to make manual readings (or reset) in between charging and usage, but didn't want to have to repatch the leads...
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    Is my charger dead given these details?

    Dumb question, but if you got the positive / negative connection around the wrong way would that damage a Ping battery? Ideally they would have protection no?
  9. C

    Is my charger dead given these details?

    I've just noted that when I have plugged in my eBike to the charger, the charger is making no sound (as per usual, as I normally hear the fan start up) and doesn't seem to be charging my Ping battery. Current battery voltage on the battery is around 33V, but normally its up around 36V when...
  10. C

    cushioning for battery - how much / what to use?

    oh ok - see what you mean now - do they actually stay tight? these don't slowly slip a little bit over time do they?
  11. C

    cushioning for battery - how much / what to use?

    @Phoebus - do you have a link to these to just what you use?
  12. C

    cushioning for battery - how much / what to use?

    I've actually got this one (i.e. re box at the back - it's not my bike here...) I was just thinking about wrapping it in the cushioning material (not at the top for the BMS & heat) then strapping down in the box with elastic cord (like a bungee), although thinking about this now I'm not sure...
  13. C

    cushioning for battery - how much / what to use?

    @cwah - wasn't thinking of that but it's another idea - I was just thinking more of something I could wrap around the battery pack. @ebent replay was kind of what I was after, like using something like mouse mat material, but a bit larger to fit around the battery when I wrap it up...
  14. C

    cushioning for battery - how much / what to use?

    Just got a new Ping battery - just thinking about doing a better job with it when I mount it into the plastic lockable carrier behind my seat. How much cushioning type material (e.g. how thick) and what type? e.g. how about something like a 2cm thick foam like you get in a sleeping mattress...
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    Ping or Headway 36V 10AH LiFePO4 for eZee?

    Excellent - Tks for the info
  16. C

    Ping or Headway 36V 10AH LiFePO4 for eZee?

    thanks - mind if I ask why, to understand the reasoning/maths?
  17. C

    Ping or Headway 36V 10AH LiFePO4 for eZee?

    Have to go a new battery pack for my eZee eBike from ebikes.ca. The hub motor details: 400 watt internally geared eZee brushless hub motor laced in a double walled rim Sealed 20 amp motor controller Further details: http://ebike.ca/store/store_ezee.php I need a 10AH battery, which seems to...
  18. C

    how about this VPower 36V 10AH LiFePO4 battery?

    ok thanks (I have a different question I'll post shortly too re batteries in this forum area)
  19. C

    how about this VPower 36V 10AH LiFePO4 battery?

    Starting to look for a new 36V 10AH LiFePO4 battery and highly likely to stick with headway...but I did note this one from China which seems quite cheap. Any comments on this battery re use for an ebike...
  20. C

    My Headway LiFePO4 battery won't charge? fault finding tips?

    markobetti/dnmun - just back on line - Jim from headway is going to give me some advice (which is great)...will let you know how we go...
  21. C

    My Headway LiFePO4 battery won't charge? fault finding tips?

    what do you think re way forward? can you buy a new BMS? not sure how much these cost versus the cost of the whole battery?
  22. C

    My Headway LiFePO4 battery won't charge? fault finding tips?

    It was after I "tried" to charge it, however the issue is when I put it on the charger I don't get any/much current flowing (I have a WattUp meter). So if there's an issue in the BMS preventing charging occurring properly then I guess it's not after charging, if you know what I mean. do you...
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    My Headway LiFePO4 battery won't charge? fault finding tips?

    ok - so here are the voltages measured - kind of displayed in a table that mimics the batteries: 2.49, 2.9, 3.11, 3.16 3.05, 2.95, 3.07, 2.95 3.07, 3.07, 3.02, 3.15 I'm not sure what the expected range is, however that first one is low no? Also measured voltage across all cells I note are...
  24. C

    My Headway LiFePO4 battery won't charge? fault finding tips?

    So just leave everything wired up and put the voltmeter across each cell separately I assume?
  25. C

    My Headway LiFePO4 battery won't charge? fault finding tips?

    Oh dear - my Headway LiFePO4 10AH battery suddenly is not charging anymore :cry: Any help re how to fault find what the problem may be would be appreciated. Some details: Headway LiFePO4 10AH 36V battery About 2 years old now - so have been using it 2-3 days a week on average I think...
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