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  1. 3nergE

    tested 18650 ~1000 total - UPDATE : SOLD

    All sold pretty much. ebay FTW
  2. 3nergE

    Awesome Capacity

    you wont get over 3000 without charging to the higher voltages usually, the panos do 3400, but most other cells 3000mAh and over require 4.35v
  3. 3nergE

    Minimum amp

    I have to call back to my original post, dont do arbitrary capacity minimums, have a % of original design capacity as your minimum. A 2100mAh minimum on first a cell that was 3400mAh compared to a cell that was originally 2400mAh are two entirely different beasts. By design, manufacturers slate...
  4. 3nergE

    Jo?o Balancing his 5kw Train!

    I still cant help but cringe at the mm's of clearance between positive bus bar and cells shorting. But then thats just me, my rigs just as cringy to most others I suppose. kind regards
  5. 3nergE

    Biggest bottleneck in an 18650 pack

    This is why i dont use fuses, unnecessary and wasteful and a false sense of safety. Providing you dont over charge or under discharge, your batteries will be fine. This is exactly why laptops cells dont have fuses, it adds a level of unacceptable risk. Large scale installations have fuses for...
  6. 3nergE

    How to recover 18650 Cells safely and reliably

    The only thing i would add is do your self discharge test after a discharge, as because there is very little energy left in the cell, it accentuates the self discharge stats and really shows a bad cell. Sit a fully charged cell for long enough and it will drop back toward nominal voltage...
  7. 3nergE

    Crazy AliExpress ID verification process

    this is why i dont use ali, on top of a lot of the sellers not using paypal, its just ripe for scamming think of what your bank would say if you filed for a scam, then told them that you had photo'd the both sides of your CC for the scammer. be like trying to claim when you left your keys in...
  8. 3nergE

    LiON Batteries + Heat - Lifetime

    Watched this lecture a few years ago, its quite good, but really just alludes to the anomalous materials in upcoming generations of batteries (that we now use) Again, keep in mind that most lappy batteries cycle cells hundreds of times to 100% dod at 40c+ and still perform admirably after...
  9. 3nergE

    ElectricBike goes offtap with SO MUCH POWER 42kW

    Its on the ground popping 300A breaker Lunatics, love the green approach with wood, just like one of my home projects <grins>
  10. 3nergE

    Cell caught fire !!!

    Still not as good as a disposable shed like you and i have Pete .... <grins>
  11. 3nergE

    ElectricBike goes offtap with SO MUCH POWER 42kW

    Another teaser update Cant wait to see him smoke this thing on the pavement
  12. 3nergE

    What else can we learn from Tesla battery pack design

    I just want to add a quick point. I compare tesla battery design and execution to NASA going to space. Both tesla and NASA being pioneers have to ensure more standards are met for indemnity reasons as apposed to safety. Think of it like this, NASA when going to space HAD to do everything as...
  13. 3nergE

    Voltages when charging

    No concern at all. A fully charged cell will slowly drift back towards 4v, dont keep charging a cell that got to 4.2 and drifts down. Similarly a fully discharged cell will drift back toward 3.5-3.6 depending on the discharge C rate. A cell charged at a high rate (1000mAh for instance) will...
  14. 3nergE

    ElectricBike goes offtap with SO MUCH POWER 42kW

    Thats the issue with my ebike, spoke snappage. I had to build a wooden mag enclosure to support the whole structure. Ghetto, but it works.
  15. 3nergE

    Voltages when charging

    The important thing to remember when charging any cell is that its current as well as voltage that needs to be considered. Fully charged is 4.2 @ 50mAh. You should really stop when its at about 0.8A 4.2. for the 16 cells combined Pluck any stranglers and charge them individually and segregate...
  16. 3nergE

    Jehu helps with VW 18650 Battery Packs

    ... and the busbars (cringe) Ive seen a few ppls busbar connects, its not pretty. Thats why i bolt everything. Welding is just not reliable, then running interconnects along the block like that, tiny tolerance between huge DC failure. Love what JG does, but the execution is cringe-worthy. I...
  17. 3nergE

    ElectricBike goes offtap with SO MUCH POWER 42kW

    It might be that way if you havnt watched his other vids, bruno is a bit over the top. This is a side project for him as he is pretty busy day to day doing repairs and custom builds Usually he does short vids that end with him yelling 'so much power' This particular vid was very jump edited...
  18. 3nergE

    Jehu helps with VW 18650 Battery Packs

    Honestly those two are clueless, even if they had a couple of hundred watts of panel, the order of magnitude increase of charge current due to cold would be no more than 20 odd percent even in ideal cold conditions (-10c), if your charge regime is running that close to the wall .... its a few...
  19. 3nergE

    Jehu helps with VW 18650 Battery Packs

    From the vid they seemed pretty clueless, like the kind of people you would just tell to get a couple of lead acid batteries. I like how she chimed in that it might just have been one battery going bad that started the whole thing ... Its a shame really, gives JG a bad name associating him with...
  20. 3nergE

    Mini power wall test subject

    AYE! Probably weighs in at half the weight of a car battery too. Its so rewarding once you start to trot your packs around replacing the olde lead acid stuff. I like it when i can replace 10kg of lead acid with like 4 cells. Sometimes its just the perfect fit.
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