Homemade Car Battery Charger

There is a drawing and written explanation in English at my Community https://www.youtube.com/post/UgzfMtif4ytBZI317Yd4AaABCQ?app=desktop
Parts List
Diode Bridge SEMIKRON 800V 20A - SKD2508
Aluminum heat sink, approx 2 X 4"
2 pole relaty12VCD coil, 30A contacts, Potter & Brumfield T92S11D22 - 12
General purpose NPN transistor 2N2222
Preset potentiometer KLS - 10 kilohms
10 Kohm resistor, half watt
2.2 kilohm resistor, half watt
Green LED, low intensity - 3VDC
Transformer 127V or 220V (depends on country) to 12V
Electrolytic capacitor, 1000 microfarads, 50V
3 1N4004 diodes
5A fuse with holder
On-off switch
1 Red alligator clip for car battery
1 Black alligator clip for car battery
Gauge 12 bare wire
Proper sized project box, ventilated
Part numbers are not critical, substitution allowed
Transformer can be higher Amps and up to 18 volts in case higher chargin rate needed. Check ratings of other components not exceeded.
Voltage values shown depend on power line voltage.

CAUTION; use only with lead-acid car batteries. Not for charging lithium batteries nor for reviving non-rechargeables!

Видео Homemade Car Battery Charger канала Chava Tarin