Tests of XTAR 18650 4000mAh, 21700 6000mAh & 26650 6000mAh Batteries

XTAR Light

Enlightened
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Apr 26, 2010
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Glad to share XTAR 18650 4000mAh, 21700 6000mAh & 26650 6000mAh tests by lui_gough.
https://goughlui.com/2024/12/29/tested-xtar-rechargeable-protected-li-ion-battery-18650-4000mah-21700-6000mah-26650-6000mah/#google_vignette

Let's check how the testing results of the XTAR VX4 grading function would compare with a proper, temperature-controlled 25-degrees Celsius test at C/5 with the Rohde & Schwarz NGM202.

battery test 1.png


He also made the cycle life tests on these batteries. For example, "The degradation data for the 21700 6000mAh cells came to a rate of 1.6243mAh/cycle for sample A and 1.6440mAh/cycle for sample B, which is pretty similar. Trend was observed to be linear. As the 6000mAh capacity of these cells allows 1200mAh to be lost at end-of-life, the calculated cycle life would be 738 cycles and 729 cycles respectively, both greater than the claimed 600 cycles, assuming the linear degradation trend holds."

battery test 2.png

battery test 3.png
 

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