Battery internal resistance tests to really know battery charge and condition

My online book is available for $50 via paypal link. 25 chapters of free energy work I have done for last 25 years.
Watch the two YouTube links below to get idea what to expect.
If you do not want the book, I accept donations of any size to my paypal.me account. (link is below)
Here are two videos I took explaining what is inside my book, the second link is a more recent description:
https://www.youtube.com/watch?v=wsuT9A2S2X4&t=265s
https://www.youtube.com/watch?v=gL9vTkjHv54&t=0s
I will immediately send the password and the link to view my online book into your email, upon recieving payment from paypal.
I have sold about 20 books so far - no complaints from customers as of yet!
Link to purchase book or leave donations:
https://paypal.me/DKonzen

Видео Battery internal resistance tests to really know battery charge and condition канала MrDKONZEN