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  1. M

    Component Identity Bestech D575-26S-LiFePO4 BMS

    The components are as follows: 13DG1: MM3513D01NRH/SOT-23-5 (balance IC) 3Q66: it's IC#R5460N213AD
  2. M

    Component Identity Bestech D575-26S-LiFePO4 BMS

    Hi football, I did have what I thought was an issue with the BMS as in I had 2 cells destroyed on the same channel ( battery no.2) to start with I thought the BMS was taking my Lifepo4 cell over 4v and killing it. Since then I have risked another cell and monitored cell 2 while charging and can...
  3. M

    Component Identity Bestech D575-26S-LiFePO4 BMS

    I think I should explain I have damaged 2 cells now on the same channel (battery No.2) reading 0v. I believe the BMS is taking the cell over 4.0v and killing it as it happens very quickly when on charge for a very short time. I don't believe it is draining the cell as a 20ah cell would take a...
  4. M

    Component Identity Bestech D575-26S-LiFePO4 BMS

    Hi I wonder if anyone can identify the 2 following components marked with the following: 3Q66 and 13DG1 TIA
  5. M

    Help Please, Bike cutting Out

    Yes the cell was charged to equal the voltage of the other cells. Going to take a look at the BMS at a component level for that channel on Monday, have tried to contact Bestech who made the BMS but they are on holiday till the 25th of February.
  6. M

    Help Please, Bike cutting Out

    So after some investigation I found there was a dead cell sitting at 0.00v. Stripped the bad cell out the pack and replaced it with new cell, charged the pack using the BMS and went to bed. Took the bike out for a 7 mile run without the BMS connected came home put it back on charge and thought...
  7. M

    Help Please, Bike cutting Out

    One more thing that bugs me slightly is how sudden the power kicks in when I twist the throttle, is there a setting in the CA v2.4 that softens the initial power? Thanks Ps I did look in the manual but wasn't sure and didn't want to change anything before asking
  8. M

    Help Please, Bike cutting Out

    So the bike worked fine with no BMS, I will try and rig something up to check each cell when under load and swap the culprit out Thanks
  9. M

    Help Please, Bike cutting Out

    Thanks amberwolf, the tabs were full tabs, I am going to try the bike less the BMS a little later and go from there, fingers crossed it the BMS tripping out Thanks Mark
  10. M

    BMS/CA (Cycle Analyst)

    Thanks
  11. M

    Help Please, Bike cutting Out

    I hope the battery is what I think it is as I built it myself and the A123 cells were supplied by OSN power (could be fake)
  12. M

    Help Please, Bike cutting Out

    I did set the controller to 20amps this morning and the CA read max amps at 42amps but it still cut out. I have now disconnected the BMS and wired the battery direct to the controller and will see how it goes Again it's pouring down with rain and better weather is due tomorrow so will try it...
  13. M

    BMS/CA (Cycle Analyst)

    Is it okay to run my bike with out a BMS and rely on the CA & controller to control the LVC and Max amps? I would obviously use the BMS to charge the battery. Thanks Mark
  14. M

    Help Please, Bike cutting Out

    Okay charged the bike up to 93.6v off the charger took it for a spin and it cut out when set at 55v and the CA read Vmin 79v so I assume it's not the LVC setting. Another observation is that once its cut out the only way to reset the bike is to disconnect the battery from the BMS, maybe a...
  15. M

    Help Please, Bike cutting Out

    The bike cuts out with the CA disconnected, I did set the LVC in the CA to 55v the same as the controller, I read confusing lowest voltage figures for this type of battery some say 2.30v yet the data sheet says 2.00v. Also when i purchased the controller from Edward Lyen he sent me the...
  16. M

    Help Please, Bike cutting Out

    I did just check the CA and Vmin was 10v but not sure when it takes the reading as something ie the controller/BMS shuts down the power. As its a brand new battery pack do you think it needs a few cycles to get it up to full power ect?
  17. M

    Help Please, Bike cutting Out

    will check it once the rain stops :?
  18. M

    Help Please, Bike cutting Out

    Hi All I have a new build and have been testing it and it keeps cutting out. The setup is as follows: Motor: QS 205 H50 3T V3 Controller: 24 FET 4115 MOSFET 84-132V Mark III High Endurance LYEN Edition Controller BMS: Battery: A123 prismatic pouch 20ah, 26s =85.8V (not sure on C rating...
  19. M

    foundingpower programmable bms

    Not sure if anyone looks here anymore but I don't suppose any one has a circuit diagram for small control boards that had 2 MOSFETs on it? As something has failed where the charger won't kick in when it should Tia Mark
  20. M

    foundingpower programmable bms

    hi haven't received an email but I had already spoken to you via your website, just waiting to replace that diode and insulted you suggested thanks mark
  21. M

    foundingpower programmable bms

    Hi I have one of these BMS's on my bike battery but somehow it went bang today and a component started smoking on the main PCB!!!! Am I able to get a replacement kit or has it all been updated and there is something newer out there My battery is a18s Battery type: Lifepo4 A123 Charge voltage...
  22. M

    Bike Juddering When Applying Throttle

    Okay I have found the offending hall sensor :D How do I go about sourcing a new one? The motor is a Crystalyte 5305 V2 Phoenix Brute II cheers Mark
  23. M

    Bike Juddering When Applying Throttle

    Will check it out tomorrow cheers
  24. M

    Bike Juddering When Applying Throttle

    Hi all, I was giving my bike some beans through a load of stones on the beach and then I had the failure where the bike judders when I apply the throttle. I have cancelled out the controller and the battery as I have spares and it is still the same. On stripping the motor down I have found...
  25. M

    foundingpower programmable bms

    Hmm I just re submitted the capacity settings and its seems to of sorted its self out now Ps also I know I had the wrong values for the cell number setting as it should of been 9/9 not 18
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