- Don't Throw Away Your Old Fan, You Can Do This: You can change the internal structure to make the fan more usable. I have added SDP 10,000mAh and Super Bright LED to use longer. The items I bought at shoppe link here: Shop Meltsee.vn sells 48K Backup Charger circuit: s.shopee.vn/30U07Yxrrm Shop Van Phuc KST sells 20K 18650 Battery: s.shopee.vn/8pRn4WIkJ5 Shop LT Shop - DIY components sells 8K Super Bright LED: s.shopee.vn/7fFpgV6pER - Subscribe to the channel and turn on notifications to watch the latest videos, thank you :P + FB PAGE: / cungnhausangtao97 + Facebook: / trandaohongphuc97 + TikTok: www.tiktok.com/@cungnhausangt...