21700 Energy Storge Kit

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BT-20 interchangeable power bank module for 21700 lithium batteries。Compatible with 18650 battery

BT-20 interchangeable power bank module for 21700 lithium batteries(Compatible with 18650 battery)

~~$119.00~~ $86.00

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DIY USB Power Bank Board

Bistook 4pcs 18650 or 21700 Charging Board Dual USB 5V 3A Mobile Power Bank Module 18650 Lithium Battery Charger Board with Overcharge Overdischarge Short Circuit Protection DIY USB Power Bank Board

~~$19.99~~ $15.99

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21700 Battery Holder DIY Energy Storage Kit

DIY Energy Storage Kit 21700 Battery Holder Case Box Bracket Slot PC+ABS Plastic Material,Support 2S3P 3S2P 1S6P Splicable No Soldering Support High Current 2pcs (2pcs 2 * 3 Slots)

~~$28.99~~ $23.99

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21700 Battery Holder DIY Energy Storage Kit

DIY Energy Storage Kit 21700 Battery Holder Case Box Bracket Slot PC+ABS Plastic Material,Support 1S8P 2S4P 4S2P 8S1P Splicable No Soldering Support High Current 2pcs (2pcs 2 * 4 Slots)

~~$29.99~~ $24.99

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DIY Battery-Free Power Bank Kit

2Pcs Battery-Free Power Bank Kit – DIY Your Own Portable Charger with 22.5W Mainboard, Includes Flux and Nickel Sheets, Supports 3X 18650 or 3X 21700 Batteries

~~$29.99~~ $24.99