Can an 18th Century Battery Charge Your Phone?

Be very careful about using Better Help. They've already been fined by the FTC for selling personal client data to third parties. That is NOT something your therapist should do

Great video! I think the issues you were having with the final battery when charging the phone was that your copper layers were touching and shorting out. If you put larger diameter pieces of soaked paper (instead of more pieces) between the layers it should keep the individual layers from touching and give you a more consistent output. Great job as always!

Love that the experiment demonstrates the formula for water by giving you 2x as much hydrogen

This just goes to show how difficult it actually is to make many common things we can get today.

Man I love this series, it's everything I loved back in the day about TKOR and Cody's lab. This also got me into Dr stone. Keep up the good work I can't wait to see what you have planned next

"Partial success" is the motto of this channel.

The battery pack controller you used in the end might have just realized it's not a lithium cell. The voltage range lithium cells run at is very small. So when yours dropped below it, the controller shut itself off to protect the cells. Aka your battery isn't dead. Just power than lithium. And also: open circuit voltage is bit representative of the load capacity.

Somehow, even though when I think Zinc, I think electrochemistry, since I relate it more to sacrificial anodes I totally missed how Zinc is perfect for batteries, even after you created capacitors! You slipped right into early electricity without me even realizing!

That stack of metal and fiber, doused in salt water lighting up that LED light was a really cool visual of the basic principles of a battery. Mind-blowing!

My mans the irl doctor stone

I love this show. Today I felt that the concept wasn't explained as thoroughly as other times and now that you're reaching more complex topics, maybe it's worth to explain them more thoroughly

It's funny how early electro-chemistry seems to be overlooked when people talk about the industrial age. It's all steam, oil and steel production that get all the hype, but electricity really played a great role in separating the elements. Even the discovered elements came about right after the battery was invented. This is my favorite part about chemistry - at least the history of chemistry. I've been really enjoying this series and I love how crude the "first drafts" of each recreation is - really gives insight into how things progress through trial and error, like with the saw frame a few episodes ago. A "perfect" saw blade would probably have reinforcement and connected to a watermill, but before you can make that, you "need the tool to make the tool" (the whole premise of this series!), and that's the early prototype that gets all bent and contorted with the first tree knot it encounters. Then there's all the other tools that need to support the new tool you're trying to make. Also, I've always wondered (after reading a thread some 15 years ago - It's become one of those things I like to think about when I'm bored - on an AlternateHistory forum with a hypothetical question of "If you dropped a group of people off on several large islands..."), just how quickly could someone recreate, let's say, cell phones and PCs starting from scratch, assuming they knew what they were doing (a speed-run if you will). Would there be a bottleneck for 1 person? a few hundred? Few thousand? How many (at a minimum) are needed for an industrial society? A modern society? Sure, you can make a simple battery, but you need the miners, the glass blowers, builders to construct factories and warehouse, housing for the workers, farmers and ranchers for food, and so on. This series goes a long way in answering these things.

Been following your channel for years and was scrolling through your old videos. It is absolutely incredible how far you've taken this all! Despite all the challenges, you keep pushing forward and it's super inspiring! Keep up the great work! ❤❤❤

Great job. I rebuild batteries for home. NiCd batteries are a bit dirty when they have been used for quite some time. I clean the plates and container. When I am done with the cleaning, I check the battery cell for shorts, then I fill the cell with a new electrolyte. The following is very important to do. I run charge and discharge cycles. All batteries must do this. It helps stabilize the charge and how much current can be used over time. I first discharge then slow charge full. Then I discharge to 40% for NiCds. I finally run this cycle for about 3-4 times. I have batteries that are in over 30 years of service.

Great work, Ive been watching since the start of the the series and your skills have greatly improved, I love the content you create

Best episode in awhile Brother! Really love how you got your hands back on the project and really hit your roots of doing everything yourself! Respect ✊

Curious why you chose to cast the discs instead of working the metal thin and cutting them.

I just found your channel and I'm super stoked I love it

Next time you cast metal with the lost wax method, build in gas vents from the discs back up to the surface. Or at least a good way from the cavities. That will allow the metal to not have to try and compress the gasses inside the mold. Or you could attach the mold to a string and swing it around employing centripetal forces to push the metal into the cavities. Both are tried and true methods of improving casting results. Also try having a larger funnel shaped hole at the top to allow for more metal in your pour. The increased weight will help push the metal into the cavities, plus the excess metal reservoir will help when the metal starts to shrink when it cools.

Loooved the museum bit <3 Please do more off site stuff !