Convert a normal car battery charger to a Re-EMF charger

Convert a perfectly normal car battery charger to a Re-EMF charger?
This is eg. very easy and inexpensive with the Einhell chargers for car batteries.
And everyone probably has one of those lying around somewhere. If not, you can buy them new now for very cheap money. Check the usual suspects (ebay, amazon and Co.)
Getting to the parts for the Re-EMF Charger is a bit more complicated.
I did this work for you and put together a conversion set which you can use
can find on Ebay. Search for "Re-EMF conversion kit".
Components used and content of the conversion set:
1x transistor TIP 142
3x resistor 24ohm 1W
3x 10A 1000V diodes
1x capacitor 35V 5600microfarad
1x heatsink
1x thermal adhesive
1x ferrite ring
0.6 and 0.8mm enamelled copper wire, approx. 1.5m in length
1.12mm enamelled copper wire, approx. 2m in length
connection cable