Hello guys
I am facing a problem with my tx (flysky t4b )
I have used my tx for quite some time now and suddenly one day the battery indicator led turned orange from green which means that the battery status is half
Next day I switched the radio on and it began blinking red which indicates low battery
I took out two cells and tested them with the multimeter and noticed that the voltage was 1.34 and 1.36 respectively
The max voltage is 1.5 so why is it saying this
Please help

the TX is right. buy a new cell and measure the voltage, it should be around 1.8 not 1.5

a 1.3V cell will drop to 1V or less when connected to a resistance.

compare a lipo: a 3.7V lipo is full only at 4.2V!

Or make a tx lithium ion battery pack like sooraj did.