>>280192350
>>280192635
Can confirm it is indeed a myth. I get the same battery life out of my 2.0 trackers with either 1.0 or 2.0 lighthouses and the battery life is the same as my 1.0 trackers.

>>280192941
I've taken apart one of my trackers, about half the space is taken up by the custom HTC battery. No other off-the-shelf battery meets that size/capacity. The remaining space is the PCB with which I'm sure could be miniaturized to some degree to maybe fit a slightly larger battery inside. The pogo connectors take up literally no space and the main reason for the shape of the trackers is to have a good redudant sensory array that is difficult to occlude and cause a loss of tracking. 

Also remember that these things are Valve designed, not HTC designed and the only reason there's a monopoly is that none of us have got off our asses and used the information valve has published on steamvr tracking to make our own.