@Steve "Papa" Eastman posted:This is what I’m using.
Steve
I just looked at the specs of the two transformers that you mentioned compared with a ZW-L. The ZW-L with new internals dynamically controls the output load.
I really don't think that you gain any greater time, only marginal gains. It is a math game with most of power usage constant against the internal battery in the unit that you have.
The battery is the variable - yours has 14 amp hour, a deep cycle marine can range from 35 amp hour to 75 amp hour which would increase your time by
2 1/2 to 5 times longer respectively.
I don't think you can change the battery in the unit - so - you have what you have unless you roll your own.
Still, you have a nice unit there and it is cool that you are out running trains. Keep chuggin', Steve!