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21700 4200 30A -AS XTAR - Re-battery: Li-Ion | 21700; 3.7V; 4200mAh; Ø21.6x70mm; 30A; ACCU-21700-4.2-30A | TME - Electronic components (WFS)
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Keeppower 21700 R 15A 5000mAh 3.6V - 3.7V Li-Ion Battery PCB Protected (Positive Terminal Raised) | plentyShop LTS
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18650 vs. 21700 Li-ion cells – A direct comparison of electrochemical, thermal, and geometrical properties - ScienceDirect
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