Powerbank 6x18650
Description
I had 6 18650 batteries from an old notebook battery and searched for a powerbank to print. Most designs either need a spot welder to connect the batteries or are designed for less than 6 cells. My powerbank is designed with enough space to use spring contacts to connect the batteries. Parts needed: 1x PowerbankBody 1x PowerbankCover 1x Powerbank Button 4x M3 screws ca. 10mm 6x18650 lithium batteries (from a notebook battery) 6x positive battery connectors 6x negative battery connectors with springs 1x Powerbank controller with LED display https://www.ebay.de/itm/304875126233 wires, soldering iron, hotglue gun. Assembly: - Print the body parts and the button. - Solder all positive battery contacts in a row and attach them to the +terminal of the controller. Repeat for the negative battery contacts (with the springs) and solder them to the - terminal of the controller. - Insert the batteries into the body and mark the spots for the negative and positive contacts. Attach the contacts to the body with hotglue. - Insert the button into the round hole of the powerbank body the round side of the button facing outwards. - Insert the controller into the body and position it with the switch facing the sqaure side of the button. Check if the controller can be switched on using the button. - Hotglue the controller in place. - Charge all 6 18650 batteries to the same voltage. - Insert the batteries into the spring contacts and make sure they are connected in parallel. - Close the powerbank with the 4 M3 screws.
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