Ep. 35 | How handy is carrying 220V mains power outdoors? A homemade multi-function portable power station that can cook rice and run a hot pot on its own battery

Ep. 42 | Turning a storage box into a solar-charged outdoor power station? Build a fun, practical multi-function solar-charging outdoor power station from a plain storage box — so useful!

Bring 220V mains outdoors — DIY power station

Ep. 37 | A high-capacity power bank this easy? Build one at home for ¥20-odd — a huge-capacity, honestly rated power bank worth ¥100+

Building a car jump-starter power bank from 8 tabless Ampace JP40 cells

A primary-school kid builds a 20,000mAh power bank — a 20,000mAh high-capacity, fully transparent cyberpunk-style one for a neighbor

Teaching you the 8-cell car jump starter

A big power bank this easy? ~¥20 at home

Building a car jump starter from supercapacitors + lithium cells — the cells store energy, the supercapacitors deliver the big current; 21700 4000mAh cells in 2P4S, 2.7V 360F supercapacitors, two together should push past 100A instantaneous, CCA estimated 500+, should start a 2.4L car; final assembly and test next

No more slow phone charging — for under ¥100 I built a 100W flash-charge power bank that supports multiple fast-charge protocols

Homemade jump starter: a DIY car emergency power supply, turning a bought Bluetooth-speaker shell into a car jump-start pack

Homemade jump starter, DIY car emergency power — turning a bought Bluetooth speaker shell into a car jump pack

A home-made jump starter from 18650 cells — only 2C cells, picked up for ¥20-odd on the Douyin store; DIY car emergency power, built into a bought Bluetooth-speaker shell

Spot-welding power-bank cells with the AWithZ portable welder. Spot-welding power-bank cells with the AWithZ portable welder. After long use a power bank's capacity drops. A shame to throw it away; swap in a few high-capacity cells and it works again

Once you’ve mastered hand-building Li-ion packs you’ll never buy a power bank again — all the old power banks at home can be re-celled! Haha

A follower asked whether the AWithZ UF20B can weld copper stacked directly; I said probably not, he said support says it can with flux. Fine — if you don’t believe me, don’t ask me again, the video is right here, see for yourself. The welder is the AWithZ UF20B from my showcase, upgraded No. 6 welding pen: copper straight on vs copper on a nickel base. Also found some followers haven’t even figured out nickel base layers… mainly I turned the power bank into a 30000mAh one, and it’s a joy

[Full reveal] Hand-building a ‘TNT’ C4-style power bank! Do not take it outside

Anyone else burned by a power bank? I went for a battery spot welder — power-bank freedom! Totally hooked