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  1. R

    Battery sandwich - different approach to DIY powerwall (based on 18650s)

    Hello, at the beginning I'd like to thank all the contributors in this place. (and sorry about my english in advance) According to DIY powerwalls which are build on PCBs, I saw couple different designs (on aliexpress, etc) but none off them was 100% compliant with my requirements ;) So I...
  2. R

    Hello all

    Roman from Poland over here. Hello to everyone.