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  1. E

    slow balancing with Bestech BMS

    Are you saying that is the way they work and others just don't know they take days to balance with a bms ? Do they take days to balance the pack ? If not then something is wrong with the setup ? With the pack or bms or the way it was connected ? How do you adjust the lvc for lipo ?
  2. E

    slow balancing with Bestech BMS

    My Hyperion only stays in balance mode for a few mins and gets them within 8 thousands of a volt and that is for homemade A123 packs. ( it says 3 but the fluke says about 8 ) How long does this bms normally take to balance ? And how do you adjust the lvc for lipo ?
  3. E

    24s BestechPower BMS Thread

    That is what I am thinking too. Lipo BMS for sure.
  4. E

    slow balancing with Bestech BMS

    Does the pack balance ok with a rc balance charger ? That would be the correct tool to charge with. And leaving them on charge for 4 days ? Did you get ideas like this from reading es ? What is your LVC set to ?
  5. E

    What is the very cheapest battery setup for 10+ miles.

    pm returned neighbor :)
  6. E

    BMSBattery/ECityPower Experience

    Yes. Thank you for this info and taking the time to take pictures and post. You may have saved some members from buying junk like this.
  7. E

    Cost of Batteries Not Dropping

    I have never seen them this low before. http://www.buya123batteries.com/category_s/1515.htm With the good service I have had with A123m1 cells from 2006 I am thinking these could last as long as Windows 7 ? (2020) :) Maybe longer ? They last so long the price per ride is so low ? :)
  8. E

    What is the very cheapest battery setup for 10+ miles.

    :cry: I am near Tampa. Where are you ? I still have a bunch of A123m1 cells. :) They would be the cheapest for 10,000+ miles ? :)
  9. E

    What is the very cheapest battery setup for 10+ miles.

    No doubt you could get those A123s to catch fire too ? I bet you could get sla to burn too ? Because many after rusty cells become rusty with water to short out in the rain ?
  10. E

    What is the very cheapest battery setup for 10+ miles.

    Cheapest would be a pack made with recycled makita cells from Doctorbass ? http://endless-sphere.com/forums/viewtopic.php?f=9&t=51279 http://endless-sphere.com/forums/viewtopic.php?f=14&t=27707
  11. E

    Installing a BMS for Lipo - How to?

    Back on topic. You are using this right ? http://www.bestekpower.com/444v12spcmbmspcbforli-ionli-polymerbatterypack/PCM-D122.html What will your LVC be set to ?
  12. E

    What is the very cheapest battery setup for 10+ miles.

    They are like the frickin devil battery ! Be your friend and buddy for many rides then burn your house down !
  13. E

    Installing a BMS for Lipo - How to?

    I put little 5 amp inline fuses on the balance leads on the packs I build. I don't ever use the balance leads to charge. Just balance and sense the voltage. Some complain the Hyperion will read an error and shut down too quick. It is so picky about sense wire connections.
  14. E

    What is the very cheapest battery setup for 10+ miles.

    I know I sure did not.
  15. E

    What is the very cheapest battery setup for 10+ miles.

    Real nice fellow too. He met Nancy, came to the house. I am very sad about what happened. He was not a newbee.
  16. E

    A123 B grade info

    this is where you can buy for real deal A123. http://www.buya123batteries.com/ A really bad ass ebike battery pack can be made with what they are selling right now.
  17. E

    A123 B grade info

    I worked at the Strohs can plant and made beer cans. Sometimes we were all scrapping cans. Even the slightest mistake on the label would cause many cans to be scrapped. They were scrapped at the plant. It was real important to them that no one saw a strohs can with a flawed label. When I...
  18. E

    Installing a BMS for Lipo - How to?

    Test on. The comment about cell logs is right on.
  19. E

    Installing a BMS for Lipo - How to?

    The best way I know of to monitor a pack while charging is with a Hyperion hooked to a display. That gives the most feedback about what is going on. BMS gives little feedback. If you do not understand what is on the Hyperion display then it is noise to you ? I am thinking if you can not...
  20. E

    Installing a BMS for Lipo - How to?

    I know how they work and know how they fail. I know about how quality rc balance chargers fail sometimes too. HK lipo is very prone to exploding if overcharged and should be monitored closley while being charged. A good rc charger helps to monitor closely. The good news is that rc lipo can...
  21. E

    Installing a BMS for Lipo - How to?

    These type of cells should be monitored closely while being charged and should be charged with a good quality rc lipo battery balance charger. If you do not know how to use a good rc balance charger then you should not be trying to charge these types of rc lipo cells. Counting on a low cost...
  22. E

    Adding 2nd pack: for range

    Yes but for a real short time. The packs were hooked together when the ride started and they discharged nicely together. I do 7s 18650 and 8s A123 now. Most simple 7s makita and 8s A123m1. You can charge and discharge them together. If dr bass's new cells stay balanced like the old ones...
  23. E

    Adding 2nd pack: for range

    Those last pictures may look too simple but it took a lot of study and testing to get to that setup. Those posts show the most simple extender packs. Makita Sony cells are easy to use for the extender pack too because they tend to stay in balance. Laptop cells hold a lot of power and make...
  24. E

    Adding 2nd pack: for range

    Some info posted here too. http://www.bikeforums.net/showthread.php/796000-Homemade-li-ion-ebike-battery-pack-from-recycled-laptop-and-Dewalt-battery-A123-cells Testing on this has been going on in Florida for about 2 years.
  25. E

    Adding 2nd pack: for range

    This is how we do it in Florida. :) http://motorbicycling.com/showthread.php?t=37952 Every one I know that does this uses A123m1 cells for the main pack because of their super cap ways. :) And 18650 cells for the extender packs because of their lightweight ways. :)
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