Скачать или смотреть Handheld Fan Battery Upgrade – 10X Backup

Mini handheld fan draining too fast? Let’s fix it!
In this DIY video, I’m upgrading the battery to get 10X longer backup — and it actually works!

What we do in this video:
✓ Disassemble the fan safely
✓ Replace weak stock battery
✓ Install a bigger 18650 lithium cell
✓ Test before vs after performance
✓ Boost backup from minutes to HOURS!

Tools Used:
18650 Li-ion battery (2500–3000mAh)
Soldering iron & wire
Screwdriver
Insulation tape / Heat shrink

⚠ Safety Note:
Always check battery polarity + avoid short circuits.

If this video helped you, please:
👍 Like the video
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💬 Comment your gadget model — I’ll help upgrade it!

Watch till the end for the BIG improvement! 😲