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  1. J

    13s battery for electric trials bike

    Have any of you worked with these cells before ? Is there another option i have yet to find for my needs ?
  2. J

    13s battery for electric trials bike

    You can take them out of the plastic holders and they are : Dimensions of cell with tabs 9x138X210mm 13s x 9mm = 117mm (just under 4 5/8”) width and it fits My measurements were of the old pack itself so there is wiggle room in the case if I have to shave down the thick foam a little As for...
  3. J

    13s battery for electric trials bike

    Motor: 5KW Golden motor Controller: Kelly controller KEB 48601 Charger: 15A 54.6V Needs to fit in a space approx: Width 10 1/4” Height 7” Depth 4 1/8” The original battery was 13s0p LiPo pouches 24.5Ah I ordered a cheap 300A recording ammeter off amazon and recorded 30minutes doing hard...
  4. J

    Anyone with a Kelly controller riding with a wattmeter?

    Peak phase current is 350A for 10 seconds Continuous phase current limit 140A
  5. J

    Anyone with a Kelly controller riding with a wattmeter?

    I have a kelly KEB48601 and just got a Wattmeter I am planning on doing some tests with My pack is 13s 48v nominal LiPo with a 5Kw BLDC motor . Any idea what kind of peak current i will draw ? The wattmeter I bought is 200A and i thought it was 300A am I in the ballpark or should i get a...
  6. J

    48v 25Ah pack cell selection help

    Thanks again for your reply What are the half dozen quality makers ? I have only found A123 I have ordered a 200A watt meter that will give me accurate current draw at full load. I will report back in a few days with numbers to size the new pack off The bike is a trials bike. Top speed of...
  7. J

    48v 25Ah pack cell selection help

    Thanks john61ct I checked that site out but they have a 36 cell minimum order :shock: “Should have no trouble at 10C but better burst than continuous, 3-5C if you want decent longevity, say 1000 cycles to 80% SoH.” are you saying the higher the C rate of the pack the less amount of time it...
  8. J

    48v 25Ah pack cell selection help

    Due to a charging problem with my Electric Motion 5.7 trials bike i left the battery discharged for a few months and the cells dropped down to around 2.0-2.4v over the course of several months. As these cells are no longer safe its time to build a new pack. Original battery was 48v 24.5Ah lipo...
  9. J

    Reviving LiPo 13S pack

    Previous thread was too cluttered so ill start new: BIke is an Electric Motion EM 5.7 trials motorbike Pack is 13S no parallel 25AH LiPo Since I bought it used the charger would click off during charging and need to be re started 1-7 times to obtain full charge At some point the charger...
  10. J

    EM 5.7 replacement battery

    Thanks for your reply AngryBob https://youtu.be/EwqiVhmYfuA - the charger would rarely charge the battery fully without “tripping” I would have to unplug and plug back in to reset several times. Charge times would vary from 20min - 2 hours - the charger says 54.6VDC @ 15A - charger has a red...
  11. J

    EV backhoe

    Thank you for your reply’s , as i tear down the tractor it is becoming clear that the cast block of the engine and case oil pan are part of the tractors structure that hold the front end including front axle on. I have now split the tractor in 2 just to remove the cast oil pan. My motivation...
  12. J

    EV backhoe

    Sorry, just to clarify, the weights aren’t big enough to make into battery boxes, it was more a representation of how weight is not an issue ie. if the battery pack was much heavier then then ice I could simply remove some weights to end up back at original weight. A trailer would not work for...
  13. J

    EV backhoe

    I have a 1979 Ford 555 Backhoe that workers amazing other then the 3.3L diesel appears to Be blown. Stock Engine Detail: Ford diesel 3-cylinder 201 ci [3.3 L] Power: 57 hp [42.5 kW] Power (gross): 62 hp [46.2 kW] Rated RPM: 2200 Torque: 160 lb-ft [217.0 Nm] Torque RPM: 1200 Type: torque...
  14. J

    EM 5.7 replacement battery

    https://www.youtube.com/watch?v=97K7hRFDeYA https://www.youtube.com/watch?v=YPN_6RA4pSg Wont charge longer then a few minutes, The charger has been cutting out since i bought the bike. I suspect its the BMS. All cells are at 3.52v so why is the BMS stopping the charge and how do i bypass this...
  15. J

    charger not working (Electric Motion)

    My 13 cell series 0 parallel Lithium polymer pouch cell 48volt 24.5 Ah pack from my electric motorbike was over discharged and left for several months. Each cell was around 2 volts. I disassembled the pack and charged each cell at 450mA and brought each cell up to 3.51 Volts. I did this outside...
  16. J

    EM 5.7 replacement battery

    EM5.7 is an Electric Motion Trials Motorbike. My battery has been over discharged (1-2V per cell) and the BMS will no longer allow it to charge for safety reasons. I was happy with the range and performance of the motorbikebike and would like to keep this economical and simple to get the bike...
  17. J

    charger not working (Electric Motion)

    Well said . I don’t want a fire between my legs
  18. J

    charger not working (Electric Motion)

    Check this guy out https://youtu.be/bkWdDx7OT7E He’s using an electric drill to run the regen to charge the batteries from 0V ! We have the same bike and the same problem where the bike was left on. EM told me i would have to send the battery to a dealer so they could charge (the contractor...
  19. J

    charger not working (Electric Motion)

    Even with having to restart the charger over and over once the battery was full it lasted 2.5 hours of riding . I left it on when it was dead and didn’t charge it now the battery is completely bad ? What equipment do i need to start going through this pack and or make a new one ? A charger that...
  20. J

    charger not working (Electric Motion)

    I drilled out the rivets and cut the battery box open to expose the cells and BMS BMS: BNT-Mp-M1005-001 On the “Cell Monitorinbg PH1” There are 2 verticle 15 horizontal wire ports labeled: 30 - - - - - - - - - - - - - - - 2 WRWWWWWWWWWWWWB W=white R=red B=Black From Red to Black I’m...
  21. J

    charger not working (Electric Motion)

    I have a 2013 Electric Motion 5.7 Trials motorbike Most of the time, the charger would only charge for 30-45 min and shut off. I would restart the charging and the same thing would happen over and over until I achieved a full charge. On occasion the charger would work normal and give me a full...
  22. J

    charger not working (Electric Motion)

    I recently purchased a 2014 Electric Motion 5.7 Trials motorbike and the charger isn't working. it will charge for 15-35 minutes then shuts off. the charger it came with is here: https://www.alibaba.com/product-detail/900w-electric-vehicle-E-car-E_60095011693.html it says ROHS LiPol 54.6V 15A...
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