https://youtu.be/G2HUwdOSy8s
I bought a cheap 4-slot 18650 power bank case and 4 18650 Li-ion cells from Temu to see if it’s actually usable. In this video, I load it up with four cheap Temu 18650 batteries and run charge/discharge tests to find out if it delivers what it promises. Is this budget DIY power bank a hidden gem or total junk? Let’s find out. Total price: ~$30 AUD.
Removable 4-cell 18650 battery box, small volume power bank case kit, welding free mobile power supply kit https://share.temu.com/bw0o4gyRNMA
2600mAh 18650 Battery 3.7V Li-ion Button Top with USB Rechargeable - for High-Power Flashlights, Outdoor Headlamps, Electric Tools (60A Continuous Discharge, 9Min Fast Charge 0-80%, 1000+ Cycles) https://share.temu.com/AnfmztTzIZA