GPS issue when connecting to lidar on UART

ArduCopter Copter 4.4
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Hi Iā€™m using holybro nano M8 GPS with MATEK H743 slim v3 and one tf mini s lidar on UART and one tf mini s on I2C for obstacle avoidance. When I connect the FC to USB GPS gets connected to the sat, but when I connect it to12.6V li-ion battery GPS no fix shows and sats get disconnected. When I tried to connect the lidars on I2C only 2-3 sats are showing.
Please help me with the same. :pray:

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Do you have a schematic? Photos?

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Thanks for replying :grinning:.
I tried to debug the problem and found that the lidars were causing interference with the GPS. The TF Mini-S Lidar switches the laser at high rates creating enough EM waves to interfere with the GPS. SO I had to relocate GPS. :sweat_smile:

BTW I had lidar and GPS both on back.