Building a Low Cost Power Tank for 4G Router
Required items 18650 3.7V – 4300mAh (2000mAh Actual) Li-ion Battery X 6 (You can use 3 as well) Some links in Sri Lanka to Buy https://nilambaraelectronics.com/product/3-7v-2200mah-li-ion-18650-battery/ https://www.daraz.lk/products/lithium-ion-icr18650-1500mah-icr-18650-37v-36v-li-ion-rechargeable-battery-for-portable-fans-and-solar-motion-sensor-lights-i120539339-s1035478092.html 3S 20A 12.6V Li-ion Lithium Battery 18650 Charger Protection Board PCB BMS Cell Charging Protecting Module https://nilambaraelectronics.com/product/3s-20a-12-6v-li-ion-lithium-battery-18650-charger-protection-board-pcb-bms-cell-charging-protecting-module/ https://www.daraz.lk/products/3s-20a-126v-li-ion-lithium-battery-18650-charger-protection-board-pcb-bms-cell-charging-protecting-module-i125327759-s1042307495.html 1N4007 Rectifier Diode X4(nos) https://www.daraz.lk/products/10pcs-rectifier-diode-assorted-1n4007-diy-kit-i122859337-s1040431779.html 1000uf/25v Radial Elec...