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Hi Beeyar,
I have recently been privileged enough to be up close and personal with a few 350 Siemens electric trains (inside battery trays, these are NiCad batteries) and was advised by them that the batteries are used when not connected to the overhead line to get them going and shut off once in motion and connected to the overhead line, I am talking here of course soley about electric trains not diesel.
The battery is used for a very short period of time, which i suppose would contribute to their long life.
I have little knowledge/experience of trains and my latest experience has sparked an interest hence my question.
Bob
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