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18650 2x2 Battery Holder

by simonwilson

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Here is a 18650 LiPo Battery Holder that can hold 4 18650 batteries in various configurations. You can connect the 4 batteries either all in series 4S1P, all in parallel 1S4P or 2 in parallel and then those 2 sets in series 2S2P. It uses 8 m5 x 20mm hex head bolts as contacts to the battery terminals, I would recommend filing / sanding the heads of the bolts smooth for the best contact because the heads of the bolts often have little numbers or letters stamped on them for identification purposes

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