Recent content by kilowatt

  1. K

    Convert 36v 20Ah LifePo4 pack to 72v 10Ah?

    Dean, Last year I tried to split a 36v 20 amp lifepo4 pack from Cammy_CC and separating the pack in half is relatively easy as it is constructed of two 18V 20Amp sections in series. It just unfolded when I removed the tape and insulators. I wanted to separate the pack to place into paniers...
  2. K

    Lithium Battery Reports & Tests' 9/08

    I took apart a 36 volt 20 amp cammy to divide it in two for panniers. I found two 18 volt 20 amp batteries series connected into a 2S19P configuration. If your thinking about getting two 36 volt 10 amp out of it, then forget it. The number of individual cells is staggering but dividing it in two...
  3. K

    Cutting a battery down to size.

    I don't know who built your pack but Cammy_CC (V-Power) built my 36 Volt 20 Amp pack. My pack was configured as a 2S19P configuration and when I unwrapped it I found 2 each 18 volt 20 amp packs series connected and folded together into one big brick. I think you will find two 24 volt 40 amp...
  4. K

    36v 20AH Lifepo4 Duct Tape Charging Issue

    I have this same pack and asked Cammy about the balancing voltage. When the charge reaches 45 volts, this is where the battery floats until it is balanced. After removing the charger the battery will quickly go to 42 volts which Cammy says is normal. Hope this helps. Kilowatt :roll:
  5. K

    Splitting a 36v 20ah Battery into 2?

    I have experience splitting a Cammy_CC 36 volt 20 amp cylindrical cell pack in two. It was actually Two 12S19P (18Volt) packs series connected and folder together into one big brick. I ruined the pack. End of that story. I asked Ping battery if they would split packs for all of us so we can use...
  6. K

    BMSBattery/ECityPower Experience

    I'm gaining experience but at a cost. I have been following the EESTOR Electronic Energy Storage Unit (EESU) development closely. It looks like a EESU will become available for E-Bike use and be 2"X2"X8" @ 400Kwh or twice the power and capacity as Lion. So, instead of spending a half grand on a...
  7. K

    BMSBattery/ECityPower Experience

    Dogman, Thank you for the very informative reply. I have a 6 mile round trip to work but this Spring I intend to use my ebike as my primary vehicle for work, shopping and touring so I think I will go with the 36 volt 20 amp. I have a Amped 500W rear kit on a 700C hybrid and purchased a 36v...
  8. K

    BMSBattery/ECityPower Experience

    I am considering buying a battery from BMS battery but am very confused over the different battery materials being used between different size packs. I am looking at the 36 volt 20 amp they came out with back in October 09 that uses 40 pieces 6665143 type cells. The pack is called a LiNiCoMn204...
  9. K

    Battery Mounting Hardware Tips for a Full Suspension DH

    That rear seat post rack could support a set of panniers and both batteries; another idea for you and more hidden. Are you staying with a 36 volt parallel system @ 40 amps or series for 72 volt 20 amps? I split my cammy lifepo4 36 volt 20 amp into two halves and use panniers. I installed a...
  10. K

    Let the Ping surgery begin

    Thanks for the Jpeg info. I want to change my sense wires to 22 gage; my battery is charging fine but I think the ribbon cable I spliced into the BMS cable is too thin a gage. Is 22 gage the norm for this? I have to splice because I can't find a like BMS connedtor anywhere to make a single cable...
  11. K

    Let the Ping surgery begin

    I just finished splitting my Cammy 36Volt 20amp pack into two halves and Cammy used the cylindrical cells and spot welded bars throughout so I had to be careful not to lift a weld; I did lift several but solder fixed them. When I removed all the duct tape and cardboard I found two 18 volt 20 amp...
  12. K

    BMS Channel Wires Question.

    Otherdoc, Yes, I can take some pictures this weekend. I purchased two tupperware cases that I am fitting the battery halves into and its looking like it will work very well. I sent an email to Cammy_CC asking for a pinout of the BMS 8 and 4 pin connectors just to make sure I haven't miswired a...
  13. K

    My new $100 Craigslist bike. The Moto-Guzzi of e-bikes??

    If the fender is plastic or fiberglass you can repair it with epoxy resin and glass cloth from the inside. To fill any cracks, mix epoxy with microballoons and fill in. Very easy to sand. Go to your local RC hobby shop for everything you will need plus advice. Match the paint and your done. Dave
  14. K

    BMS Channel Wires Question.

    Thanks, that was my intent if I didn't get an answer. I had to be real careful removing the duct tape from the battery as I lifted several spot welds and needed to break out the big solder gun. This is turning out to be a very ambitious project but will be well worth it in the end. Thanks again...
  15. K

    BMS Channel Wires Question.

    I separated my cammy_CC 36 volt 20 Amp LifePo4 into two blocks to put into panniers and I need to extend the BMS channel wires. I have already made the power buss. The BMS will be in the rack trunk and the BMS has two channel wire connections (one 8 pin and one 4 pin (12 channels)). Do I need...
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