Recent content by Hans Tuchel

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  1. Hans Tuchel

    Battery offer received. Any opinion is welcome

    Well, thats what my testers were telling me. Im negotiating now the cost to have them delivered internationally, in case somebody is interested.
  2. Hans Tuchel

    PhilPower project

    Finally I have now more than 560 batteries together for my first PhilPowerwall (Phase 1) Configuration: 7S80P All cells repacked with repackr. Result, 7 packs with an average capacity of 2,280.9 mAh Total capacity: 4.73 kWh Additionally I received my spot welder: Sunkko 709AD+ Now I'm...
  3. Hans Tuchel

    Battery offer received. Any opinion is welcome

    Hi, guys Everything took a while, but finally I received the discussed batteries. Specs: 2600mAh, 5C Trial order: 80 pieces Here the test result, tested with 1000mAh discharge: 1x 2590mAh 15x 2600-2699mAh 34x 2700-2799mAh 20x 2800-2899mAh 9x 2900-2999mAh 1x 3006mAh no heating issues...
  4. Hans Tuchel

    Research Project

    Dear Yannik, welcome to our community. I highly suggest you go thru the FAQ and different topics in the Forum. You will find all answers there. Additionally use YouTube. Search for DIY HBPowerwall and Jehu Garcia and for sure there are already many more good sources.
  5. Hans Tuchel

    Thoughts on Nitcore i4

    I'm using an i4 to pre charge cells with voltage below 2.5V, which my LiitoKala Lii-500 wouldn't recognise. Further a D4 to pre charge the cells, so the testers are occupied a shorter time.
  6. Hans Tuchel

    Battery offer received. Any opinion is welcome

    I truly understand the uncertainty in their offer. Since I'm working with China more than 10 years and I'm living in Asia since 13 years, I know that we can't rely on the given information. Thanks for of your input and I'll keep you updated.
  7. Hans Tuchel

    Hybrid inverter - opinion?

    Hi guys, Im searching for the right hybrid inverter and found this one. Any input?
  8. Hans Tuchel

    First harvest!

    You can find these torx screw drivers or bits as well. Just look around or online.
  9. Hans Tuchel

    Electrodacus - Active BMS - opinions?

    Hi, guys, does anybody has experience with this active BMS? http://electrodacus.com What other active BMS would you recommend and would it be even suitable for our DIY projects? Any input is welcome :-)
  10. Hans Tuchel

    Hello from Los Gatos, California, USA

    Welcome in the club and good luck with your project!!!
  11. Hans Tuchel

    Battery offer received. Any opinion is welcome

    I'm sure you are certainly right, but many of the cells we are using in our DIY Powerwall are beyond their lifecycle.
  12. Hans Tuchel

    Battery offer received. Any opinion is welcome

    I don't think everything in the data sheet is related to the "data". Part of it is their testing procedures. This is related as well to the 300 cycles. They are testing certain lots on 300 cycles and then see what is the remaining capacity.
  13. Hans Tuchel

    Battery offer received. Any opinion is welcome

    I guess the best might be to order a few and check them out. I believe in a 48V PowerWall setup 1C or even 0.5C should be just fine, agree?
  14. Hans Tuchel

    Cell Database Submissions and Updates

    Just pulled out the same from a HP pack
  15. Hans Tuchel

    Battery offer received. Any opinion is welcome

    Here the reply from China... (how you guys could even think they couldn't be good... Man, they are from The China): DearHans Th. Tuchel, Good Day. Iusedtogiveyouinformationaboutdigitalbatteries.Themaximumdischargecurrentis1C. I know youneed the...
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