This rectifier was constructed as a device for smart and knowledgeable people. It isn't equipped with any securities against short circuits of poles, exceeding 15V or overload. This is just a strong rectifier for temporary loading the accumulator, and alternator is to do the rest. It is not a device of 'plug and go' type.
The rectifier consists of:
a huge transformer 16V 30A
rectifier bridge 50A
ammeter
ventilators (there are two of them, because it is better for the device to be too cool than too hot)
auxiliary transformer
regulator on primary side
30A fuses on secondary side and 10A on primary side
Tests indicated that the rectifier can be activated when the clamps are plugged.
A module that protects against overload can be added.
Pictures: