Recent content by snath

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    18650 battery Kit development and discussion[testing done]

    Thanks for the bumps. As mentioned in our private emails, so far so good with the builds. My wife and I have put many miles/charges on the three packs I've completed with no problems. I've two more (10s4p) builds in progress using the simplified procedures outlined in my last posts...
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    Another No Solder/Weld 18650 Build (Updated 03/09/2014)

    Sounds like it could prevent an "oops" moment. The potential product liability is why I never pursued making kits. Too bad, the packs are really simple to build and maintain.
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    Another No Solder/Weld 18650 Build (Updated 03/09/2014)

    I don't use any thread locker. The Nylon or PVC that I make the spacer bars out of grips the screws grips the screws very tightly..
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    Another No Solder/Weld 18650 Build (Updated 03/09/2014)

    Hi, The previous poster asked about compression strip thickness/amount of squeeze. Here's my take after some half dozen batteries: It's not critical but you do want a definite amount of squeeze so that you make good contact. I would shy away from thick rubber/foam and stick with the 1/6" Poron...
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    Another No Solder/Weld 18650 Build (Updated 03/09/2014)

    Ok, Here's a way to make bus bars without much tooling. Alls required is an embossing die from a craft store like, in the US, Michaels or Joann Fabrics. The one we want comes in a package of 3 and looks like this: The dimples are spaced about 10mm apart so we want to cut off every other male...
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    Another No Solder/Weld 18650 Build (Updated 03/09/2014)

    Hi all, I'm about to begin my 4p batteries but I think I'll make a couple of changes to the materials I use. First, I'll use 3/16 inch PVC (I used nylon on the last one and didn't like the way the holes tapped out) rod for the spacers and 2-56 screws to hold everything together. I think this...
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    CHEAP NEW ORIGINAL 18650 21700 BATTERY CELLS, POUCHES AND PACKS

    I'm afraid that tumich doesn't know much about customer service and that's what has lead us to this sorry state. A buyer informing a seller that, in the buyer's opinion, something is wrong with the product and offering a solution is a first step in basic conflict resolution, and that's what I...
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    CHEAP NEW ORIGINAL 18650 21700 BATTERY CELLS, POUCHES AND PACKS

    I'm not sure how to bench test them and produce beautiful graphs as some can do on ES, but I can tell you this, 50 them are in a pack as we speak http://endless-sphere.com/forums/viewtopic.php?f=14&t=57810&p=1072830#p1072396, and I can assure you, they will get a real world workout from a...
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    CHEAP NEW ORIGINAL 18650 21700 BATTERY CELLS, POUCHES AND PACKS

    The cells came by sea and they took, as I mentioned, 55 days from order placement to my door. It was sort of fun tracking them using the tracking number that tumich provided. It, of course, wasn't active while the cells were at sea but after a while, the US Postal Service tracking system picked...
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    CHEAP NEW ORIGINAL 18650 21700 BATTERY CELLS, POUCHES AND PACKS

    I received 100 Panasonic cells well packaged in 55 days from order placement to my door in Atlanta, GA USA. I'm happy to receive the cells but am very displeased with the seller's performance in honoring my request for cells that had never been welded. Despite telling me that I could have cells...
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    Another No Solder/Weld 18650 Build (Updated 03/09/2014)

    A Gaffer Tape https://en.wikipedia.org/wiki/Gaffer_tape build. This is the most simple build that I've made yet. It's taped together....... Well, the box (sides 093, ends and top and bottom .062 polycarbonate) joints are taped up but the cell holder matrix, spacer bars, bus bars, and Poron foam...
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    Another No Solder/Weld 18650 Build (Updated 03/09/2014)

    It's been a while since I posted anything but I'm building a couple of 10s4p batteries and another 10s10p (as soon as the cells I ordered from Tumich ( http://endless-sphere.com/forums/viewtopic.php?f=31&t=61608 get here). So far, I've been very pleased with the builds Ive made. I've gotten a...
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    Fire at ebikes-sf

    Me too. Ilia is first rate.
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    Another No Solder/Weld 18650 Build (Updated 03/09/2014)

    Happy New Year!! Both batteries are holding up well but I have to say, that I haven't a lot of cycles on them yet. Here's where I get the foam: http://www.mcmaster.com/#poron-urethane-foam/=vam1d3 And, here's where I get My copper: http://basiccopper.com/10-mil-010-inch-.html . You can...
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    Holy grail of solderless 18650 is close but not idiot proof.

    Off the shelf components can be built with mostly hand tools....... only one specialist part (the dimpling block) and you are in business. Change any battery with a screwdriver. http://endless-sphere.com/forums/viewtopic.php?f=14&t=57810 KISS is best!
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