4 Cell 18650 Lithium ion Battery Holder TM1637 4 Digit 7 Segment LED Display Portable Power Banks: Combine with
EUR39.88
EUR77.88
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Ships within 48 hours · Estimated delivery Oct 30 - Nov 4
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Description
4 Cell 18650 Lithium ion Battery Holder TM1637 4 Digit 7 Segment LED Display Portable Power Banks: Combine with Portable Power Banks: Combine with a voltage regulator (such as LM7805) to create a simple 5V portable USB charger or regulated power supply Compact and lightweight design Flexible Wiring Options: Configure cells in series for higher voltage 4V nominal with doubled capacity two parallel groups connected in series for balanced voltage and capacity
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