OK, must admit that I have no experience with battery railroad locomotives, having only read about that Wabtec "experimental" freight unit, but I have a few questions concerning such a battery powered unit in commuter service:
1) How will the 480 volt, three phase AC HEP for train heating/air conditioning/lighting be supplied?
2) What with all the fast acceleration and quick stopping using blended dynamic-air braking, how long will the batteries hold their charge?
3) How often would the batteries need to be recharged, and how long would it take?