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    Tabless design cylindrical cells tests

    Comming soon! Disclaimer: The tested EVE INR21700 40PL sample is most likely still a pre-production sample. This one has been disassembled from the customer battery pack. I only got this sample through sheer fortune and the support of the ES community. EVE 40PL samples as arrived: Test...
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    Calendar ageing tests of mixed cylindrical cells

    "Simple" Calendar ageing test (at nominal capacity 0.2C) Test eqiupment: - Precision multi-channel battery tester (accuracy ±0.02％ // 10x better than ZKE testers) - Temperature chamber with ±0.1 °C stability - BF-2A four-wire cell fixture (20A version with Gold plated contacts) - Cells were...
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    Cycle life tests of High Energy density cylindrical cells

    "Standard Power Rate" test (1C continuous discharge) note: the 1C discharge test is performed at ca 90% DoD (4.15V-3.00V) Test eqiupment: - 2pcs ZKETECH EBC-X0510 - BF-2A four-wire cell fixture (10A version with Nickel plated contacts) - tested in room with relatively stable temperature 23 ±2...
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    Cycle life tests of High Power density cylindrical cells

    "Standard Power Rate" test (1C continuous discharge) note: the 1C discharge test is performed at ca 90% DoD (4.15V-3.00V) Test eqiupment: - 2pcs ZKETECH EBC-X0510 - BF-2A four-wire cell fixture (10A version with Nickel plated contacts) - tested in room with relatively stable temperature 23 ±2...
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    Panasonic NCR21700T

    Do you have experience with this NCR21700T model from "Panasonic"? Is it fake or rewrap of 21700A with welded cap on plus terminal or genuine one? https://www.aliexpress.com/af/NCR21700T.html?d=y&origin=n&SearchText=NCR21700T&catId=0&initiative_id=SB_20210102025413 I ordered few samples for...
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    LG INR21700H30 5000mAh

    I recently found another competitor in 21700 size which seems to be soon available on mass market. It is on stock at QeenBattery. Also interesting is that it is cheaper than Samsung INR21700-48G with 4750mAh nominal capacity, where this LG H30 cell is 5000mAh. But still expensive in comparation...
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    Samsung INR21700-48G

    After almost a year after presentation of INR21700-48G (High Energy 4800mAh cells in new 21700 format) they seems to be finally available on the retail market. I recently found them listed by Fasttech and IMR Bateries. I have already ordered few samples for some tests :)
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