TexasSP posted:Will be watching this closely. From my years of RC, I can say lipo has many advantages over Nimh, they just need to be cared for appropriately. However, the low amp draw of model trains lends to long lipo life and issues should be nil. I have RC setups which at burst can pull over 100 amps and during normal use can pull 50-60.
I think the best bet for charging is modern wireless charging. Pull over a certain section of track, siding, wherever, and let it charge. Lipo can take very high charge rates now, much more than Nimh so super fast charging is a reality. Of course lithium ion cells are also an option.
What are you running with a 50 amp constant? I've worked with industrial dc electric that took a cherry picker to install, and they don't use that much power. On the small side 50 amp is an automobile's starter.
Miliamp? ...has to be 
