diff --git a/nodes/prj.conf b/nodes/prj.conf
index 2bf9438..823c35b 100644
--- a/nodes/prj.conf
+++ b/nodes/prj.conf
@@ -3,3 +3,9 @@ CONFIG_I2C=y
 CONFIG_SENSOR=y
 CONFIG_BT=y
 CONFIG_GPIO=y
+
+CONFIG_LOG=n
+CONFIG_CONSOLE=n
+CONFIG_SERIAL=n
+CONFIG_PRINTK=n
+CONFIG_UART_CONSOLE=n
diff --git a/nodes/src/battery_percent.c b/nodes/src/battery_percent.c
index d722a92..85ec3d7 100644
--- a/nodes/src/battery_percent.c
+++ b/nodes/src/battery_percent.c
@@ -35,7 +35,7 @@ enum error_code battery_get_value(int* holder){
     // battery_voltage in [mV]
     int battery_voltage = battery_sample();
     if(battery_voltage >= 0){
-        *holder = battery_level_pptt(battery_voltage, levels);
+        *holder = (battery_level_pptt(battery_voltage, levels)/100);
         ret = success;
     }else{}
     return ret;
diff --git a/nodes/src/main.c b/nodes/src/main.c
index f9532f0..899afdd 100644
--- a/nodes/src/main.c
+++ b/nodes/src/main.c
@@ -12,7 +12,6 @@
 
 int main(void){
     supervisor_init();
-    // todo : sohuld init fail, activate led ? 
     supervisor_run();
     // should never come here
 	return 0;
diff --git a/nodes/src/supervisor.c b/nodes/src/supervisor.c
index 525fcee..11ccaa2 100644
--- a/nodes/src/supervisor.c
+++ b/nodes/src/supervisor.c
@@ -11,7 +11,8 @@ enum error_code supervisor_init(){
         success == co2_lvl_init() &&
         success == hygro_init() &&
         success == thermo_init() &&
-        success == window_init()
+        success == window_init() &&
+        success == battery_init()
     ){
         ret = success;
     }else{}
@@ -58,7 +59,7 @@ enum error_code supervisor_run(){
                 current_sleep_time = SLEEP_MAX_DURATION;
             }else{}
         }
-        //k_sleep(K_MINUTES(current_sleep_time));
+        k_sleep(K_MINUTES(current_sleep_time));
     }
     return error_unknown;   // should never return
 }
diff --git a/nodes/src/window_status.c b/nodes/src/window_status.c
index 4115419..85c0c48 100644
--- a/nodes/src/window_status.c
+++ b/nodes/src/window_status.c
@@ -4,7 +4,7 @@ static const struct gpio_dt_spec window_switch = GPIO_DT_SPEC_GET(DT_NODELABEL(w
 
 enum error_code window_init(){
     enum error_code ret = init_failed;
-    if(gpio_is_ready_dt(&window_switch) && gpio_pin_configure_dt(&window_switch, GPIO_INPUT)){
+    if(gpio_is_ready_dt(&window_switch) && (0 == gpio_pin_configure_dt(&window_switch, GPIO_INPUT))){
         ret = success;
     }else{}
     return ret;