DIY Transparent Power Bank Case(20000mAH)

DIY TRANSPARENT POWER BANK CASE FOR 21700 Hello! this is my video tutorial of my transparent power bank that i bought on shopee for ony 500PHP this type of power bank uses 8PCS 21700 but since i dont have a 21700 i use a 18650 that have a 3500mAh each. SHOPEE LINK: https://shopee.ph/BTM-21700-Storage-Box-Quick-Charge-DIY-Box-Case-21700-Holder-Box-Case-for-8PCS-21700-Charger-i.296625818.22308775451 BATTERY USE: PANASONIC GREEN 18650 3500mAh