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18650 Charger (micro usb)
by CZH
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A very small & portable charger for 18650 batteries. I use this one in combination with my phone charger. It allowes me to travel light. the batteryholder & electronics are both from Ali. total cost: < 1 euro, net weight : 15 gr.
Instructions:
1 buy parts
2 drill holes in batteryholder
3 connect wires to pcb
4 fit pcb in printed part
5 test charger
6 fix battyry holder with double sided adhesive tape
Ive tried printig a batteryholder but buying one makes a reliable charger!
batteryholder: https://www.aliexpress.com/item/New-Plastic-18650-Battery-Case-Holder-Storage-Box-with-Wire-Leads-for-18650-Batteries-3-7V/32658520557.html?spm=a2g0z.10010108.1000001.8.23126cf42nhmQX&isOrigTitle=true
PCB: https://www.aliexpress.com/item/New-1Pcs-lot-5V-1A-Micro-USB-18650-Lithium-Battery-Charging-Board-Charger-Module-Protection-Dual/32631921696.html?spm=a2g0s.9042311.0.0.67614c4dJUROQp
Instructions:
1 buy parts
2 drill holes in batteryholder
3 connect wires to pcb
4 fit pcb in printed part
5 test charger
6 fix battyry holder with double sided adhesive tape
Ive tried printig a batteryholder but buying one makes a reliable charger!
batteryholder: https://www.aliexpress.com/item/New-Plastic-18650-Battery-Case-Holder-Storage-Box-with-Wire-Leads-for-18650-Batteries-3-7V/32658520557.html?spm=a2g0z.10010108.1000001.8.23126cf42nhmQX&isOrigTitle=true
PCB: https://www.aliexpress.com/item/New-1Pcs-lot-5V-1A-Micro-USB-18650-Lithium-Battery-Charging-Board-Charger-Module-Protection-Dual/32631921696.html?spm=a2g0s.9042311.0.0.67614c4dJUROQp
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