How To Add USB Port For Charging 9V Batteries!

Stop Buying 9V Batteries! Make USB Rechargeable 9V Li-Ion Battery
DIY Rechargeable 9V Li-Ion Battery is very easy. All you need is a small 3.7V Li-Po battery, an Adjustable Step Up Module with Charging and Discharge feature, and a non-usable 9V battery body.

Parts list:

Detailed parts list:

DIY USB 9V Battery - How to Make Rechargeable 9V Li-Ion Battery

[MrTeoRoom]

I can't even imagine the amount of work and experience that went into making this video. Brilliant

[templeofleila]

When I saw the video thumbnail I thought it was clickbait. I thought, "no way. this guy is going to have to.. uhh, he's doing it.. wow. finally someone who deserves my subscription!" Thanks for sharing!

[MCsCreations]

Brilliant work, dude! Nicely done! 😃
Stay safe there with your family! 🖖😊

[kentuckywindage]

Love it! Going the extra to provide a part's list is genius!
New sub!
Keep'em coming!

[JanTuts]

Warning: do NOT epoxy or otherwise fully constrain the lipo battery itself!
They need to be able to expand as gasses build up due to cell deterioration from (mis)use.
Constraining it might cause the cell to burst instead, creating a fire hazard, especially if it happens while charging or full.

[bfflorida]

well done... very creative and encouraging... now you got me thinking to make one myself.. thank you for the parts list, most YouTubers don't go extra step like you done. thank you

[SQLException]

Nice, now place this "9v LiIon" cell in your fire alarm...

... and replace or charge it every 2 weeks. Those boost/step-up boards draw quite some milliamps. Found out the hard way.

[Luka.Z.]

I give few comm per year on YT!!!
This goes to you dude..Ali best on future projects

[NortelGeek]

Awesome. I'm not sure why you put clear epoxy in there--I would've left it out just in case, but this is still a cool project!

[moonolyth]

Nicely packaged!!!❤
So concealed one may mistake it for a regular battery and toss it away.😢

[RND-USA]

Great job!! What kind of glues were you using? Two kinds right?

[vittoriovulpitta]

Davvero Complimenti: Professionale, Geniale Comprensibile.
Buon lavoro con soddisfazioni, di ogni Bene!!!
Dall'Italia Centrale Adriatica 🇮🇹

[СерыйВолк-лд]

Micro USB is cool in the case, I just got high - very neat and beautiful! But stepup dc-dc will drain the battery, slowly but surely, at least it is protected from over-discharge. The switch will not help in any way - what, unscrew the battery compartment every time before and after use? And the question is also how the inevitable dc-dc ripples will affect the accuracy of the device. For me, a much better and simpler solution is a 2S li-ion battery (7.4v), its voltage is enough.

[erikig]

Duracell Engineering: Scribbles rapidly in their ideas notebook!

[V-i-LK]

Ah yes, let’s make a rechargeable 9V battery by making it 3.7V

[typxxilps]

beautifully crafted and executed idea - learned a lot from this. And this might be the real duracelll at least lifetimewise.

[mrnapolean]

I would have opted to use a USB-C port. But nonetheless great job.

[Leo-kdz]

Quando for colocar para carregar tem que desligar a chave ?

[mikhailmakarov]

Bro, give me the link for copying tape and sponge, please.

[tm]

This is a Genius modify... Has anyone $$ priced it out??