Help: thermal imager advice

I often use thermal imager for smart phone to detect the failures in the circuits and wirings. 

FLIR one pro used to be a good choice. It can fuse the visible light with infrared light in the daytime. But when it comes to night, the visible light does not work at all. What is worse, its work time is too short. It often run out of power in 1 hour.

Then I bought Seek compact pro. It can work for longer time. But it cannot produce clear images. I cannot even see the specific part on the circuit board.

I have seen my friend using IRay T3S. Its images are even better than FLIR one pro, and it can work for a long time by using the battery of the phone.

But my friend bought it in China. It will cost too much time to by one from China.

Does anyone know where I can buy an IRay T3S thermal imager. Or is there anything better than all of the devices above?

Thanks for your advice!!!