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  1. D

    Lithium Ion battery dead?

    I have performed tests on all the cells while under load with the bike wheel running off the ground. The results are: C1: 4.10V C2; 4.10V C3:4.11V C4:4.11V C5:3.62V C6:3.44V C7: 4.12V C8:4.09V C9:4.15V C10:4.15V So It looks like I have 2 cells (C5 and C6) that are not coping under...
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    Lithium Ion battery dead?

    I didn't realize that I could take readings of the individual cells across the balance lead with a multimeter. I have done this now and here are the readings. C1: 4.14V C2: 4.16V C3:4.15V C4:4.14V C5:4.08V C6:4.03V C7:4.17V C8:4.15V C9:4.15V C10:4.16V Cells C5 and C6 are a bit low. I...
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    Lithium Ion battery dead?

    So the idea is to increase the voltage of the undercharged cell by repeatedly discharging all cells by running the bike wheel of the ground. The recharging process will hopefully bring the undercharged cell back up closer to the other cells until eventually they are all the same again. Is this...
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    Lithium Ion battery dead?

    I have a 37v 10 Amp hr Lithium Ion Polymer battery that has been sitting around unused for 12 months. I am not sure if the charger is able to charge due to the battery being over discharged. I measure 44 volts from the battery before turning the throttle on the bike. If I sit on the bike the...
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    lipo battery life

    The packs do not get hot after use. I have one of these cell monitors. http://www.hobbyking.com/hobbyking/store/__10328__Hobby_King_Battery_Medic_System_6S.html I do have a watt meter on my bike. So all I need to do is connect my packs as 12s1p, connect my battery medic to each battery with...
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    lipo battery life

    Thanks for your help guys. Much appreciated :D I have tested my batteries with my battery medic to identify weak cells. Here are my results all 6 packs connected in parallel, pack 1, pack 2, pack 3, pack 4, pack 5, pack 6 cell 1-...
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    lipo battery life

    I am trying to work out why my 12s3p (48V 15000mAh) lipo pack is giving me such poor mileage. I am only able to achieve 17kms (10.2 miles) riding WOT (1KW conhismotor, max speed 48km/hr) before I reach 41.5 v LVC on my controller. This is slighly less than when I was running new packs with...
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    How to test motor phase wires?

    I have used this test since I am having some intermittent problems with my motor starting. Using this test I find that only 2 of the wires touching (yellow and green) will cause resistance on the wheel spinning. The third blue phase wire does not cause any resistance when touching either the...
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    12s2p range compared to 12s3p

    I had a lipo setup that was 12s2p (10,000mah)and had a range of 17kms riding WOT. I upgraded my lipo pack to 12s3p (15,000mah) and expected a range of 25kms. My range that I am now getting is 20kms. Is this expected? I would also add that my battery pack contains a mixture of zippy and turnigy...
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    Lipo balance wire short

    So I removed my six lipo batteries from the parallel charging board after a charge and noticed a puff of smoke when i removed one particular balance lead from the parallel board. I examined the relevant battery and did not notice anything unusual except the smell of the smoke. I then measured...
  11. D

    EV Falcon Triangle Bag

    Actually I just had a ride with all the velcro straps tightened and no hitting the bag with the crank. Still it is a close fit between the bag and the crank. Thanks for your help :D
  12. D

    EV Falcon Triangle Bag

    The distance between my cranks is 136mm, Having said that the bag is not centrally positioned in between the 136mm. I have tightened the seat tube and bottom tube velcro straps and there is little improvement but still not enough clearance between the crank and the bag. How do I determine what...
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    EV Falcon Triangle Bag

    Hi Guys, I have just bought an EV Falcon Triangle Bag and have an issue where my left pedal crank keeps hitting against the side of the bag when I pedal. I haven't heard of anyone else having this problem but it is annoying riding along continuously kicking my lipo in the bag. I only have 4 off...
  14. D

    FalconEV 19" triangle bag.

    So not a good move to put the controller in the bag? Would look much neater.
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    FalconEV 19" triangle bag.

    Is anyone putting their controller as well as their batteries inside their triangle bag? I just received my bag today and it looks great but am concerned that the controller might overheat sitting inside this bag. I could leave the zippers open near the controller to allow the heat to escape but...
  16. D

    Bulk Charger

    Is this the right green time 600 watt charger? http://m.aliexpress.com/item/619493826.html?tracelog=storedetail2mobilesitedetail It says in the description constant 58.8vDC Isn't this too high for charging a 12s pack?
  17. D

    Bulk Charger

    Once you factor in delivery cost the bms battery 600w is $157 delivered, the greentime 600w is $119 delivered. The eBay 600w is $106 delivered. Not sure if it is suitable or reliable though. :?
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    Bulk Charger

    Is charger good value as a 12s 10ah lipo bulk charger? http://www.ebay.com.au/itm/600W-48V-12-5A-Switching-Power-Supply-With-Current-Control-Charger-LED-CCTV-UKB-/380593768192?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item589d280700&_uhb=1#ht_2362wt_1186 Any other recommendations...
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    Help with selecting power supply

    I have this Turnigy Mega 400W charger. I need a power supply to suit must be greater than 15v up to 17v to be able to use the max 400w of the charger. Any recommendations? I am looking at the cheapest option available. Will a 400w power supply be sufficient. Would this be a good option...
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    Lipo balance charging

    I have just received a battery medic from hobby king but am now confused as to which readings I should trust. My 400w turnigy battery charger shows different readings to the medic which is also different from my true RMS multimeter. The readings i am getting are: Charger Medic...
  21. D

    using 5ah battery

    I charge a single 6s 5ah pack one at a time at the moment on a 400w turnigy balance charger. I found out this morning that the volts displayed on the charger were incorrect. When measured with a meter the cells were balanced. I repowered the charger and now it is displaying the correctly...
  22. D

    lipo balance problem

    Ok I will measure across balance leads. I have been using this balance charger for the last week.
  23. D

    lipo balance problem

    Yes I do but I don't want to cut open the packs since they are only a week old and would void any warranty.
  24. D

    lipo balance problem

    You are correct! I turned the charger power off and on and now all cells are balanced again. I wonder if it is safe to charge now?
  25. D

    using 5ah battery

    I usually commute to work and back approx 2.5ah per trip but figure I could charge at work and then at home. I normally only charge once for the whole trip. Now I am too nervous to use my charger though since it has now unbalanced 2 packs beyond repair. :( It has charged up c2 down to approx...
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