Bettomshin 50Pcs 21700 Lithium Ion Cell Double Battery Holder Bracket for DIY Battery Pack 21.7mm Hole Dia

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  • Features Cylindrical 18650 battery holder, fire retardant pc pp gp materials; Crack resistant edge with the slot, with the firm, It can accomodate various size.
  • Function Battery holder 21170 belong to necessary support of high-end battery combination, can withstand high drop, high strength support, easy to heat dissipation, convenient combination, fixed specifications, and free combination.
  • Advantage 21700 battery holder has card slot at edge, any size can joining together, match up firm, with strong, and no need for other device connected by vibration test.

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