The TX comes with a charging equipment - A charging lead + USB cable.
Per the manual - There will be a red light on the charging lead while the TX is getting charged. Once done it will be green.
My story
I connected the USB cable to my laptop on one end and charging lead on the other. The light was already green when i did that. I then connected the TX and the light went off. Kept the TX on charge overnight(just incase the indicators were faulty) but no results.
Everything i am using is stock. Anyone who has faced a similar issue or can help.