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Overview of Batteries in Series or Parallel - Battery Products - Electronic Component and Engineering Solution Forum - TechForum │ Digi-Key
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battery charging - Can I make endless parallel li-ion connections? - Electrical Engineering Stack Exchange
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Amazon.com: 18650 Battery Case Holder, 4 Pcs 2 Slots x 3.7V DIY Battery Storage Box, in Parallel Black Plastic Batteries Case for 2 x 18650 Ltvystore : Electronics
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