# takes battery voltage readings
    from machine import ADC #Batteriestatus
    def adc_battery():
    	adc = ADC(0)                                        # initialise adc hardware
    	adc_c = adc.channel(attn=3, pin='P16')              # create an object to sample ADC on pin 16 with attenuation of 11db (config 3)
    	adc_samples = []                                    # initialise the list
    	for count in range(100):                            # take 100 samples and append them into the list
    		adc_samples.append(int(adc_c()))
    	adc_samples = sorted(adc_samples)                   # sort the list
    	adc_median = adc_samples[int(len(adc_samples)/2)]   # take the center list row value (median average)
    # apply the function to scale to volts
    	adc_median = adc_median * 2 / 4095 / 0.3275
    	#print(adc_samples)
    	return adc_median
    lipo_voltage = adc_battery() #Batteriewerte zuordnen
    print('Batterie = ' + str(lipo_voltage) + ' Volt') #Wert anzeigen
    # takes battery voltage readings

A few notes about your code:

• list append is slow. Allocating the list once and then filling it is much faster.
  . you can use adc_samples.sort() for an in-place sort.

P.S.: Sorry if I confused you.