Search results

Date Relevance Most replies

  1. TrotterBob

    (Sold)K2 26650 3800mah Lifepo4 Cells (120)

    These have all been sold. :mrgreen:
  2. TrotterBob

    100 dollar 48v ebike

    Ewww its got disc brakes. Awful. :mrgreen:
  3. TrotterBob

    (Sold)K2 26650 3800mah Lifepo4 Cells (120)

    Just heard back from Hummina. He says hes got enough cells so all 112 of these are still available. I have no plans for the other 3 cells either so if you want I'll include them too, but I suspect they are not ready for prime time so at the very least do a cycle test and check the other two...
  4. TrotterBob

    (Sold)K2 26650 3800mah Lifepo4 Cells (120)

    Wow, late to the party much? I do have a few more of these but Hummina has first dibs. I bought 2 cases of 120, sold 125 to Hummina, plucked 3 cells out for being defective and if my mental math is correct that leaves 112 cells? In fact one cell out of the 240 total was almost dead flat on...
  5. TrotterBob

    2 stage LH drive on single speed road bike

    Hmmm... Direct drive to the rear hub. Interesting. That setup looks like it would easily lend itself to regen braking. Just out of curiosity, how close is that belt clearance next to the seatstay mount? Edit: oops. Where are my manners? Awesome build. :thumb:
  6. TrotterBob

    (Sold)K2 26650 3800mah Lifepo4 Cells (120)

    No idea if they will be back in stock at battery hookup. Possibly some other 26650s or similar sized LiFePO4s. Your price worked out to $2.68 per cell and look how they're going on feebay: https://www.ebay.com/itm/265825504131 $10 per cell. Highway robbery considering they most likely...
  7. TrotterBob

    (Sold)K2 26650 3800mah Lifepo4 Cells (120)

    Just to make this easier for potential buyers I'm willing to cap any shipping costs to $35. But I'm still only asking for the actual cost of shipping so if you're within a few states it might be cheaper. :mrgreen:
  8. TrotterBob

    (Sold)K2 26650 3800mah Lifepo4 Cells (120)

    Selling one case of 120 K2 26650 3800mah Lifepo4 Cells. These were bought brand new from Battery Hookup back in March of 2021 and never cycled. Each cell was checked for voltage and they all measured 3.27 to 3.28v which is right around 50% SOC. I checked them again a few months back and they...
  9. TrotterBob

    Tool batteries

    ISR8pKoIa5k
  10. TrotterBob

    "Copper/nickel sandwich" buses for series connections

    If only the LiPo manufacturers could post honest C ratings rather than '150C BURST CAPABLE!!!!!'. Maybe we should shame them more often on social media. There are meters out there that can accurately measure C ratings and internal resistance...
  11. TrotterBob

    Has anyone bought these K2 Energy cells off eBay? And other battery pack questions

    Yes I did say had. And now there are people on feebay who've obviously loaded up on these in anticipation of the day when Battery Hookup runs out. They did the exact same thing when Battery Hookup had the Navitas 25ah lifepo4 cells. So far, Battery Hookup has been accurate in stating the...
  12. TrotterBob

    Has anyone bought these K2 Energy cells off eBay? And other battery pack questions

    Battery Hookup had those at just over $2 a cell and they were selling them in lots of 20 and *120. They're quite good as they were new cells for a military project that got cancelled. They were testing at or slightly above 3,800mah each.
  13. TrotterBob

    Cooling outrunner with sprayed water?

    I'd find a fan to mount to the motor can for additional cooling. Pic belongs to Nightflyr over on Helifreak.com.
  14. TrotterBob

    0 feedback ebayers keep bidding on my e dirt bike?

    Feebay sucks for small volume, occasional sellers. They cant hide that.
  15. TrotterBob

    0 feedback ebayers keep bidding on my e dirt bike?

    Somewhere deep in the feebay settings you can stipulate the minimum number of feedbacks someone must have to bid or buy from you. I've been hit by competitors too with that same scam. What they do is make multiple throwaway accounts that are rarely or ever used. Recently I got a buyer with...
  16. TrotterBob

    Charging a 13s pack

    One more thing to keep in mind. Charging thru the balance wires is doable but the limiting factor there is the thin wires themselves. Unless you decide to forgoe the typical JST-xh connectors and went with something like a molex connector and thicker wires. I'm not very familiar with balance...
  17. TrotterBob

    Charging a 13s pack

    If you could possibly manage to go 12s that would open up a few more options in terms of balance chargers. Unfortunately a charger that also balances up to 16s is rather expensive. https://www.buddyrc.com/products/isdt-x16-dual-channel-2200w-20a-16s-uav-ac-dc-battery-charger I think your best...
  18. TrotterBob

    The very fake and counterfeit Avid FR-5 brakes I received from Amazon

    Wouldnt zero yikes be indifferent?
  19. TrotterBob

    The very fake and counterfeit Avid FR-5 brakes I received from Amazon

    If only you could leave 4 out of 5 yikes for the seller. :shock:
  20. TrotterBob

    (Sold) A123 26650 lifepo4 cells ONLY $1!

    Wonder when that changed. Last time I checked they had an option for USPS Priority Mail ground. Did you talk to someone behind the counter or someone in charge?
  21. TrotterBob

    (Sold) A123 26650 lifepo4 cells ONLY $1!

    Can you edit the title and put the word SOLD in front? Also do you see any option to close the thread?
  22. TrotterBob

    Your Creation's Before & After Pics

    Those have got to be the most disgusting solar panels I've ever seen. But hey, 465 watts is 465 watts. I'm sure you got a good deal on those. Impressive skillset you have there.
  23. TrotterBob

    recharge battery by pedaling ... no chain ring or sprocket

    Its definitely doable. 7hfClQh3rxM
  24. TrotterBob

    what is it about a bmx bike that some people dont understand?

    I'd be more concerned with that single sided fork. As for the frame it is Cannondale so I suspect they know what they're doing. Have you heard any reports of Hooligan frames failing?
  25. TrotterBob

    what is it about a bmx bike that some people dont understand?

    That would never catch on. Gotta think of something clever, like calling it a Hooligan.
Back
Top