@chefmarkt69 posted:Is it like a BCR?
Exactly like a BCR. The BCR2 contains exactly what I pictured, a 5.4V Supercap and a connector. The 9V BCR for 5V boards has multiple supercaps and Zener diodes.
@chefmarkt69 posted:Also we’re can you purchase them? Also do I need different types for different MTH locomotives? Because after this I am going to replace the rest of mine! I don’t want my family and myself to be a statistic!!
Yes, you have to determine which board each has, rectangular charging port signifies 3V board and round charging port signifies the 5V board.