said by pmurdock 
:If I do go with an Ethernet switch what about this one?
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www.controlsysteminnovators.com/itm00045.htmIt shows a power draw of 52 mA with all 5 ports linked up worst case scenario. I will have 3 of those ports so perhaps the current draw will be ~30 mA of constant draw. That's gonna drain the battery BIG time! All just to add a device to allow me to watch the battery because drainage is already an issue!
You need either a hub or a switch. Both draw power. There is no such thing as a passive ethernet splitter.
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