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Instantly charging Ni-MH AA Battery with Joe Cell

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Uploaded by on Apr 18, 2008

Using a Joe Cell, you can charge rechargeable batteries with interesting results.

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Science & Technology

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Standard YouTube License

  • likes, 7 dislikes

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  • pfffpfpfpfpfff hahahaha. Bam, instantly charged and holds it.

    You can't seriously expect me to believe that by looking at a multimeter which is drawing microamps from that battery.

    Sorry to busrt your bubble of confidence but you try hooking that battery to a load and it will run flat again in a second.

  • I would ADD a red flag to this video: "Hey kids dont try this at home is dangerous!" you are overloading that poor battery with 10 times its working voltage plus no current regulation, that little batt could do a nasty bang bang! not very nice so close to a Joe Cell with hidrogen flowing out!

  • interesting video guy, don't understand all the negativity your getting, but ignore it keep trucking... & thanks.

    Thom in Scotland.

  • To me, Joe cell is more like a "joke cell" since you kinda made a joke device to show how a battery can be charged.

  • this is a great example of CAPACITIVE CHARGING! e field is set up with charging battery and charges the dielectric water. lil' battery is charged with this quite quickly.

    we need to see this happen with scopes!

    great work. keep it up

  • Discharge test please. How many mah do you get when discharging it.

  • Is the positive off the 12V battery?

  • Does it work like normal full battery? Sounds like a lot of amps during recharegeing.

  • BS. The "Joe Cell" functions more or less like a resistor so those poor alligator clip leads don't melt.

    I don't challenge the fact the NiMH cell gained charge, but it isn't a full charge and the only reliable way of measuring the true remaining charge is to discharge it to a known load and gather data.

  • how much current does it draw when it charging??? I just checked a couple rechargeables that I have and the capacitance of them is 1500 mAh. That means to charge a battery at 1/C you have to apply 1.5 Amps for 1 hr. Now if you go to a 15 minute charge that would be a 4/C rate and require 6 amps for 15 minute to fully charge. So 15 seconds? that would require 60 times the current! that's 360 AMPS!

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