Upcycle Old Lithium Ion Battery by converting them to AA form factor (with f3d)

Upcycle Old Lithium Ion Battery by converting them to AA form factor (with f3d)

This project is only for people that has a good understanding of electronics, voltage, and power requirements of devices.

It is easy to get it wrong and damage a device with this mod.

However, if done right, it does add a lot of value, and reduces e-waste.

Also, please note:

There is a Modular Version that I also designed and has been easier to use (recharge) than this version:

• https://www.printables.com/model/417935-upcycle-old-lithium-ion-battery-by-converting-them

But, this one can also be used for the “2nd Shorted Battery” for a device that requires 2 X AA.

I salvaged the battery from a discarded e-cig.

Used a couple of diodes to drop the voltage to what the electric toothbrush needed.

And the electric toothbrush is now working with a Li Ion battery.

The voltage drop or modification will obviously vary from application to application.

Luckily in this case the toothbrush worked much better with a voltage of around 3V instead of the stock 1.5V power source.

In some cases where you need 2 AA batteries to power 3V, you could print 2 of these, and have 1 just short out with a wire.

So 1 Li Ion converted battery (3.6V which can be lowered with diodes) will easily power the device.

IMPORTANT NOTES:

Your electric tooth brush / or any other device might have different specs and power requirements.

Please do your own calculations and test accordingly when creating the circuit.

I can't be liable for any damages.

The model is available for free download and use.

If you still want to invite me for a coffee for my effort, troubles and time, you can do it via:

https://www.paypal.com/paypalme/avicode

Thanks!