Quote from: Jean-Marc on December 08, 2023, 02:20:35Hi, I was under the impression that chemically, 18650 cells could not achieve more than 3500 mAh. Let me know what cells were tested to provide 4000. ThanksNanoGraf INR-18650-M38A with 3800mAh seems to be the highest capacity 18650 on the market, but they claimed already a year ago to have a 4000mAh model developed as well.