Can anyone explain what thF are they doing ? Goes against what I learned. I have done it myself, closely monitoring each voltage but to sell a product that does it, they have to have 'tonsills'...
----> https://www.aliexpress.com/item/325...816586152704473075ed051!12000028397175812!rec
----> https://www.aliexpress.com/item/325...816586152704473075ed051!12000028397175812!rec