diff --git a/src/hal/olimexpoeiso.h b/src/hal/olimexpoeiso.h
index 70856336..dcc32e43 100644
--- a/src/hal/olimexpoeiso.h
+++ b/src/hal/olimexpoeiso.h
@@ -13,10 +13,10 @@
 // enable only if you want to send paxcount via ethernet port to mqtt server
 #define HAS_MQTT 1  // use MQTT on ethernet interface
 
-//#define BAT_MEASURE_ADC ADC1_GPIO35_CHANNEL // battery probe GPIO pin -> ADC1_CHANNEL_7
+//#define BAT_MEASURE_ADC ADC1_GPIO35_CHANNEL // battery measurement
 //#define BAT_VOLTAGE_DIVIDER 2 // voltage divider 470k/470k on board
-#define BAT_MEASURE_ADC ADC1_GPIO39_CHANNEL // external power probe GPIO pin
-#define BAT_VOLTAGE_DIVIDER 2.1277f // voltage divider 47k/442k on board
+#define BAT_MEASURE_ADC ADC1_GPIO39_CHANNEL // external power sense
+#define BAT_VOLTAGE_DIVIDER 2.1277f // voltage divider 47k/100k on board
 
 #define HAS_BUTTON KEY_BUILTIN // on board button
 #define HAS_LED NOT_A_PIN // no on board LED