Actually, the crank light could be comforting as batteries always die in horror games and movies ;).

Glad to be back.

It's been two years roughly, where have you been?

I wonder if this objects or something like it could be hooked up to your vehicle and some place. Basically charge up something besides the main battery so that you have emergency lighting besides just using the main car battery. And on another note, I wonder if any car companies out there possibly created and tire battery for an hood on a vehicle.

How many minutes it will last?

I wish I had it, I'm having trouble living on small portable solar panels.

@@lightdark00 on his KZfaq link you can purchase everything and the beautiful thing about it is that he shows you step by step, so you won't feel left out having these type of products, have a beautiful day 💗

@@green_light_8806 I don't need a step by step, it's super simple. It's the parts I can't afford. As it is the electric is provided by a battery and a 200w inverter, that I would need to use for my solder iron. In addition, I was looking at these very hand cranks and pedal cranks just the other day on amazon. I came to the same conclusion that I couldn't keep going long enough just to charge my phone, if there was a low sun week. The $80 worth of supercaps which really take up a notch, is something that I don't have. As it is the $35 for a hand crank takes food out of my mouth.

@@lightdark00 buy similar value capacitors but a cheaper make, they may not last as long but it will still work. My 8 super capacitors cost £12

@@strawman9410 Another buy something post.🙄 I like to eat each day too, at about $1-2 a day now.

I agree. This one is nice because it is smaller, easier to build, and better for USB devices.

Good idea.

Maybe find an old sewing machine.

I hacked together a charger from the lower part of an exercise bike ( base and crank) and a 100V DC treadmill motor. The poly-V belt from the bike fit perfectly on the poly-V wheel on the motor. 15 RPM on the pedals charges a phone completely effortless through a car USB adaptor, so this can be done while sitting on a desk or in a recliner. I too added 6*350F super caps + diode and a "%" LCD battery meter to have a buffer, so I could pedal in bursts. The USB adaptor worked from 16V down to 7V on the caps. I also tried charging a laptop at 19V directly by holding the RPM constant , but without regulation, it was too sketchy for the survivability of the laptop, but still doable at 60-100 RPM, like a brisk walk. Not very portable, but excellent as a blackout generator for home use, just to keep the basics running.

@@Tore_Lund can you share a detailed video of this for noob like me.

Good question. I have done long term tests with and without balancing. My thought is that the closer you come to the full charge state equaling the max voltage of the pack the more important balancing becomes. In this unit the full charge state is around 15 volts. The 8 super caps full charge is around 21 volts. It probably would have been better to go with 6 super caps. This was my first build and after testing the no load generator output voltage and seeing that it was around 20 Volts I decided to go with 8 caps. After testing If I was building this over again I would probably go with 6 caps and no balancing.

I was wondering the same thing. Glad to see new videos from you!

i think li ion or Lipo cells and controller is better option for your example.

lol..i use cats!

no these are regular capacitor for filtering, we are talking here about super capacitor, and you have to make difference between 100uF and 100F

Thanks for telling me about them. I’m checking them out now.

Glad you like it.

Yes

Solar isn't reliable. With this you could use it and charge it at any time. Great for emergency use. Solar is just better for long term usage.

This is great for the upcoming nuclear winter. There will be almost no sunlight for many months.

No you would have less run time. Instead of 20 minutes plus you'd have probably 15 minutes. Adding more in parallel 8 + 8 would give you more run time, probably 40 minutes plus run time. Not sure if you would need to reduce the 100f to 50f though.

If you put two 100F (3V) capacitors in parallel, you would have 200F (3V). If you put two 3V 100F capacitors in series, you get 6V 50F. So 100F divided by 6 is 16.67F (18V). LaserSaber might do better to use a 3S2P arrangement of 3 serial groups of 2 caps each, 200F/3 = 66.67F (9V). If he had a buck-boost converter bringing the energy back out, he could use 2S3P, at 300F/2 = 150F (6V). All this math assumes the new 3V Tecate supercapacitors (at Digikey) are used.

It took me 3-4 minutes to reach 15 volts. That is pretty much a full charge for this unit. In theory it could go up to just over 20 volts but that would take way too long at this gear ratio.

Good question. I have done long term tests with and without balancing. My thought is that the closer you come to the full charge state equaling the max voltage of the pack the more important balancing becomes. In this unit the full charge state is around 15 volts. The 8 super caps full charge is around 21 volts. It probably would have been better to go with 6 super caps. This was my first build and after testing the no load generator output voltage and seeing that it was around 20 Volts I decided to go with 8 caps. After testing If I was building this over again I would probably go with 6 caps and no balancing.

@@lasersaber Probably keep the 8 caps so if ever u feel like charging it for longer, you get to have more power stored. If you go with 6 caps in the future, you would be charging near the full caps voltage right? And would have issues or need for balancing.

connecting them in parallel would increase storage power capacity but would reduce the charge voltage tolerance

Yes

of cos amigo!

"The supercapacitors, under standard testing at ambient and rated temperatures, and application testing at ambient temperature, have undergone approximately ten million, 11 million, and one million cycles, respectively, over two years. The supercapacitors did not experience end-of-life failures but remained within specified operational tolerances. The study was terminated after successfully completing 11 million cycles at approximately 75% DOD at rated temperature. The results demonstrate cycle lifetimes significantly in excess of manufacturer specifications and potential for deployment in long-life robust applications." Source: www.researchgate.net/publication/273395798_Cycle_Testing_of_Supercapacitors_for_Long-Life_Robust_Applications

@@lasersaber Thank you so much for the info. It means it can sit for years waiting for emergency or when needed will be useful for as long as needed without the need to replace crucial component.

yes i was shocked to his videos turn up again in my recommendations..i virtually forgot the channel through the few years of absentia!