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  1. Nealh

    Battery Wiring before I blow myself up!

    It depends on how the switch is wired. If direct inline on the v+ supply wire then 0v will register, if the switch is a wired BMS one then one will see up to 50% voltage.
  2. Nealh

    Help with my folding ebike which cutting out under load .

    No further response came from this one. Full power with wheel off the ground tells you little as no meaning full current load is applied, one needs to know how the voltage reacts under load on the move. The only way of knowing is by wiring a meter of some kind to find out.
  3. Nealh

    Bike cutting out when battery on 3 bars

    If you are going to keep this battery and use it, it looks like you will need to keep monitoring it and balancing it manually every so often when #11 wanders. So you don't keep having to open the battery each time buy one of these 12s jst leads and solder it direct to the cells as indicated on...
  4. Nealh

    Bike cutting out when battery on 3 bars

    Easier to charge via the jst connector, solder a pair of arduino pins on the charger wires. Buy a small strip like this. 12 Pin Header Pins Strip PCB 0.1" 2.54mm for Arduino, Breadboard | eBay Break off a pair of pins as one with the plastic as the insulator, solder a wire to each pin and...
  5. Nealh

    Bike cutting out when battery on 3 bars

    If the cells are re wraps/fakes as might be suggested by the battery repair guy you used then there is no knowing if any of the cells are new or what they are. If re wraps then they could be 29E's rewrapped as the mah rating is about right.
  6. Nealh

    Noise from motor - hall sensor issue?

    The three thin wires are for internal speed sensor, it is a Hall sensor which doesn't affect the motor running as it is only for detecting the speed magnet on the side plate. Try swapping a pair of the Phase wire over there are only 6 possible combo's to try. 1. B -- B G -- G Y -- Y...
  7. Nealh

    Bike cutting out when battery on 3 bars

    So the low group is pretty steady and decreasing in voltage at a similar linear rate, try a manual charge of that group to match the others then do a full balance charge. Once that balance charge is pretty even (check all cell groups again), disconnect the balance wire jst and discharge the...
  8. Nealh

    Help! HELP NEED ADVISE FOR MID DRIVE

    Aliexpress or PSWPower or other China seller like Tobikekit or Greenbikekit.
  9. Nealh

    BMS with discharge bypass - or not?

    If charging without BMS one must be able to monitor all cell groups manually, which means a lot of patience and watching. For 36v one can buy and use a 10s balance charger in place of a BMS but would need external balance connector, the main problem is knowing the weakest cell during discharge...
  10. Nealh

    Help! Controller wire diagram LSW1174-14?

    Tbh only one brake cut off is needed and I only ever fit one if I use them.
  11. Nealh

    D.V.E.C.K

    Made me smile watching the promo for it, Indian slapstick humour sort of reminds of 70/s British comedy.
  12. Nealh

    Throttles

    DVLA don't actually legislate for kit bikes, but in essence if one follows the pedelec specs to the T then one should be ok. One can't be nicked for a class not allowed for so there is a loop hole in the legislation. Follow the 250w motor marking and 25km/h max pedal assist and no throttle over...
  13. Nealh

    Throttles

    Not so if it complies with SVA testing and certification as a 250w pedelec.
  14. Nealh

    looking to buy a controller

    C1 value 2 is likely if it is 12 poles on the magnet disc, other wise try value 1 or 3. The other values for C1 won't work for that disc type. Check the sensor head has a 1mm gap to the sensor, if the gap is larger they tend not o pick up the signal. If it still doesn't work check the wiring...
  15. Nealh

    52v Controller / Display options?

    40a current draw takes the cell draw to 6.67a each so near it's optimum performance before damage may occur to the life cycle. Here are Mooch's comment's on the cell after testing. Comments This cell has a moderate maximum temperature of 73°C-75°C at its 10A rating. But it suffered some damage...
  16. Nealh

    looking to buy a controller

    There is no switch a such to turn PAS on but if the C1 value is incorrect then the PAS won't work. Show us the PAS unit you have fitted to determine the correct C1 value.
  17. Nealh

    Bike cutting out when battery on 3 bars

    The manual balancing is a pain but yes one can keep balancing the cell group every so often, 0.01 or 0.02v out of balance isn't worth worrying about but a full 0.1v is. To save opening the battery all the time the best option is to wire/solder up a separate balance lead to the cell groups only...
  18. Nealh

    52v Controller / Display options?

    How a particular cell holds up is dependant on the max current regularly applied and the quantity in parallel to each other so one has to take reviews with pinch of salt. I prefer the unbiased independent testing/research done by the likes of Mooch at ECF and some of the guys on ES who have no...
  19. Nealh

    Bike cutting out when battery on 3 bars

    Low drain means attaching something that will apply a small current load, typically some 12v bulbs attached in series.
  20. Nealh

    looking to buy a controller

    PAS needs connecting to be legal and for pedal assist to work, throttle will work without PAS. Yes wire sequence on sp sensor need to match.