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Amazon.com: Adeept 2PCS 2Slots Battery Holder with Wire and 2.54mm JST Connector and Plug for 18650 Battery 4 Cell Case, Batteries Connected in Series 7.4V, Solderless Battery Storage Box Holder for DIY
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Amazon.com: Adeept 2PCS 2Slots Battery Holder with Wire and 2.54mm JST Connector and Plug for 18650 Battery 4 Cell Case, Batteries Connected in Series 7.4V, Solderless Battery Storage Box Holder for DIY