775 heating connecting to bts7960

My 775 dc motor is heating while connecting with bts7960 driver

You have left out a lot of information.
What supply voltage, what code, what shape of the bts7960 driver...
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What is the motor's rated voltage? What is it's full load and stall current? What kind of load is it driving? What is the bts7960's supply voltage?

Bts7960 6 to 27 v 43 ah

775 dc motor 12v 24v

Battery 12. V lead acid battery

I am using two driver to control four motors so each driver suppurate power supply

Supply1 Lead acid battery 12.86v
Supply2 lithium battery 15.6v

In supply 1 motors heating
Supply2 battery is heating

Stall current aproximatly 20 to 40

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