Slim Power Bank Using 21700 Li Ion Cell
by Flash_Heart in Circuits > Electronics
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Slim Power Bank Using 21700 Li Ion Cell
![WhatsApp Image 2022-07-12 at 4.00.52 PM(3).jpeg](/proxy/?url=https://content.instructables.com/FEP/48BT/L5I6QFZ6/FEP48BTL5I6QFZ6.jpg&filename=WhatsApp Image 2022-07-12 at 4.00.52 PM(3).jpeg)
![WhatsApp Image 2022-07-12 at 4.00.52 PM.jpeg](/proxy/?url=https://content.instructables.com/F11/9EKI/L5I6QFZ1/F119EKIL5I6QFZ1.jpg&filename=WhatsApp Image 2022-07-12 at 4.00.52 PM.jpeg)
Slim Power Bank using 21700 Li ion Cell. 3D printed body.
Supplies
![WhatsApp Image 2022-07-12 at 4.00.53 PM.jpeg](/proxy/?url=https://content.instructables.com/F3E/NZ18/L5I6QFZ9/F3ENZ18L5I6QFZ9.jpg&filename=WhatsApp Image 2022-07-12 at 4.00.53 PM.jpeg)
![ps32055090-type_c_usb_5v_2a_boost_converter_step_up_power_module_lithium_battery_charging_protection_board-1215392772.jpg](/proxy/?url=https://content.instructables.com/F5F/439W/L5I6QG3L/F5F439WL5I6QG3L.jpg&filename=ps32055090-type_c_usb_5v_2a_boost_converter_step_up_power_module_lithium_battery_charging_protection_board-1215392772.jpg)
1.21700 cell from Robokits or Robu.
2. 5v 2A boost charging module
https://makerbazar.in/products/type-c-usb-5v-2a-step-up-boost-converter-with-usb-charger
![WhatsApp Image 2022-07-12 at 4.00.52 PM(1).jpeg](/proxy/?url=https://content.instructables.com/FLA/HVM7/L5I6QFZ4/FLAHVM7L5I6QFZ4.jpg&filename=WhatsApp Image 2022-07-12 at 4.00.52 PM(1).jpeg)
![WhatsApp Image 2022-07-12 at 4.00.52 PM(2).jpeg](/proxy/?url=https://content.instructables.com/F7X/CU3G/L5I6QFZ5/F7XCU3GL5I6QFZ5.jpg&filename=WhatsApp Image 2022-07-12 at 4.00.52 PM(2).jpeg)
![PXL_20220718_085749919.jpg](/proxy/?url=https://content.instructables.com/FE9/4NLI/L5PC98X5/FE94NLIL5PC98X5.jpg&filename=PXL_20220718_085749919.jpg)
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![PXL_20220718_085659782.jpg](/proxy/?url=https://content.instructables.com/FL9/3BPU/L5PC98XU/FL93BPUL5PC98XU.jpg&filename=PXL_20220718_085659782.jpg)
![PXL_20220718_084824493.jpg](/proxy/?url=https://content.instructables.com/FX1/X4QE/L5PC98ZF/FX1X4QEL5PC98ZF.jpg&filename=PXL_20220718_084824493.jpg)
![PXL_20220718_084916561.jpg](/proxy/?url=https://content.instructables.com/FGU/5V99/L5PC98YN/FGU5V99L5PC98YN.jpg&filename=PXL_20220718_084916561.jpg)
![PXL_20220718_085653505.jpg](/proxy/?url=https://content.instructables.com/FPQ/M2B6/L5PC98Y7/FPQM2B6L5PC98Y7.jpg&filename=PXL_20220718_085653505.jpg)
3D print body and cap and solder battery positive and negative to board according to signs. Use nickel strip for negative battery terminal. Use epoxy glue to secure boost module to cap body.