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  1. johnws6

    Silicon Carbide Schottky Diodes, ideal diodes for charging?

    I ran across these silicon carbide schottky diodes and am wondering what everyone's opinion who has used them or thinks they would work in a charging system for nickel based batteries. I have a setup of 4 packs of 20 nimh cells in series and want to set up a charging method where I don't require...
  2. johnws6

    Proper Nicad parallel pack construction charging procedure

    Hi all, I'm looking to get your thoughts and feed back on a project I'm currently constructing. I'm making a rotary self propelled sweeper and am using an old nicad pack I had from a previous unfinished project. It's a pack made of 160 Sanyo N3000CR Nicad cells. I made the pack from garolite...
  3. johnws6

    Power Tool Chargers...e-bike use?

    After pondering numerous ways to charge my 48 volt pack of 200 sanyo N3000CR nicads in a 48 volt configuration i finally came to this approach. I noticed that right now on ebay you can purchase many cheap power tool chargers that have delta V and delta T built right in. The highest they go for...
  4. johnws6

    Sanyo N3000CR Nicads..racing??

    All, I have about 300 Sanyo N3000CR nicads i'm thinking about using for an electric pocket bike. My plan is to make them into a 40S 5P pack, and then maybe a 40S 2P pack as well, so possibly 40S 7P total. I have to split them up so they fit, i'm just not sure if i should bother or will need...
  5. johnws6

    Sanyo N3000CR NiCad vs. A123

    All, i'm deciding which would be better for use on a re-design for my electric pocket bike. From the specs, the sanyo nicads look to have a lower resistance of 3.4 mohms and the a123 are 8 mohms. I just want to make sure im not overlooking anything, but wouldn't the sanyos hold their voltage...
  6. johnws6

    Calling all Sanyo Ni-Cad Battery Experts

    I'm looking into purchasing some of these Sanyo N-1800 ck nicad cells and am wondering if they are any good for high rate discharge applications. I currently have 1/2 D saft VRE cells and they aren't all that great. They are listed on this site as being high rate and high temperature and are...
  7. johnws6

    Saft 100C cont. lithium batts

    Just wondering if anybody has seen these? They look pretty crazy, and even better than the current a123 cells. http://www.saftbatteries.com/doc/Documents/defence/Cube769/VL%206A%20Data%20Sheet_final.1386f8e5-cf15-411c-bd70-4f91e50a2672.pdf
  8. johnws6

    Battery heating, could it be the connectors?

    I have 1/2 D 40 cell ( 48 volt) nicad packs that im using in a pocket bike, 8 packs in total. I'm running them pretty rough through a logisystems 48 volt 700 amp controller and a large 6 inch diameter by 12 inch long met pmdc motor. It seems that after i went with somewhat large over kill...
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