diff --git a/board/msba2-common/include/msba2_common.h b/board/msba2-common/include/msba2_common.h
index a9d9d3e72c..fff12f965d 100644
--- a/board/msba2-common/include/msba2_common.h
+++ b/board/msba2-common/include/msba2_common.h
@@ -24,8 +24,8 @@ and the mailinglist (subscription via web site)
 	scatterweb@lists.spline.inf.fu-berlin.de
 *******************************************************************************/
 
-#ifndef __BOARD_H
-#define __BOARD_H
+#ifndef __MSBA2_COMMON_H
+#define __MSBA2_COMMON_H
 
 /**
  * @ingroup		msb_a2
@@ -48,4 +48,4 @@ and the mailinglist (subscription via web site)
 #define VICIntEnClear VICIntEnClr
 
 /** @} */
-#endif // __BOARD_H
+#endif // __MSBA2_COMMON_H
diff --git a/board/msba2/include/board.h b/board/msba2/include/board.h
index bf596f0ee1..2b1f28fd2a 100644
--- a/board/msba2/include/board.h
+++ b/board/msba2/include/board.h
@@ -2,6 +2,7 @@
 #define __BOARD_H 
 
 #include <msba2_common.h>
+#include <bitarithm.h>
 
 #define LED_RED_PIN (BIT25)
 #define LED_GREEN_PIN (BIT26)
diff --git a/drivers/include/ltc4150.h b/drivers/include/ltc4150.h
index 4a3c055153..fdc08573ae 100644
--- a/drivers/include/ltc4150.h
+++ b/drivers/include/ltc4150.h
@@ -9,6 +9,7 @@ void ltc4150_stop();
 
 double ltc4150_get_current_mA();
 double ltc4150_get_total_mAh();
+double ltc4150_get_total_Joule(void);
 double ltc4150_get_avg_mA();
 int ltc4150_get_interval();
 long ltc4150_get_intcount(void);
diff --git a/drivers/include/ltc4150_arch.h b/drivers/include/ltc4150_arch.h
index 1a6c5c630b..51fc9478a3 100644
--- a/drivers/include/ltc4150_arch.h
+++ b/drivers/include/ltc4150_arch.h
@@ -46,6 +46,7 @@ and the mailinglist (subscription via web site)
 
 #define _GFH (double)32.631375
 #define _R_SENSE (double)0.330
+#define SUPPLY_VOLTAGE  (5)
 
 void ltc4150_disable_int(void);
 void ltc4150_enable_int(void);
diff --git a/drivers/ltc4150.c b/drivers/ltc4150.c
index 947265f6a5..9f4134b5c9 100644
--- a/drivers/ltc4150.c
+++ b/drivers/ltc4150.c
@@ -54,6 +54,10 @@ static double __attribute__((__no_instrument_function__)) coulomb_to_mA(double c
     return (coulomb * 1000) / 3600;
 }
 
+static double mAh_to_Joule(double mAh) {
+    return (SUPPLY_VOLTAGE * mAh * 3600);
+}
+
 uint32_t ltc4150_get_last_int_duration_us() {
     return HWTIMER_TICKS_TO_US(last_int_duration);
 }
@@ -66,6 +70,10 @@ double __attribute__((__no_instrument_function__)) ltc4150_get_total_mAh() {
     return coulomb_to_mA(int_to_coulomb(int_count));
 }
 
+double ltc4150_get_total_Joule(void) {
+    return mAh_to_Joule(ltc4150_get_total_mAh());
+}
+
 double ltc4150_get_avg_mA() {
     return (int_to_coulomb(int_count)*1000000000)/HWTIMER_TICKS_TO_US(last_int_time - start_time);
 }
diff --git a/projects/default/main.c b/projects/default/main.c
index 06c8a16e7e..ccc4cfd9a1 100644
--- a/projects/default/main.c
+++ b/projects/default/main.c
@@ -34,7 +34,6 @@ int main(void) {
     shell_init(&shell, NULL, shell_readc, shell_putchar);
 
     shell_run(&shell);
-
     return 0;
 }
 
diff --git a/projects/laser/main.c b/projects/laser/main.c
index 902ffc3088..e3c3d4f83e 100644
--- a/projects/laser/main.c
+++ b/projects/laser/main.c
@@ -7,6 +7,8 @@
 int main(void)
 {
     sht11_val_t sht11_val;
+    double mAh = 0;
+
     uint8_t success = 0;
     
     puts("");
@@ -18,11 +20,12 @@ int main(void)
 
     while (1) {
         success = sht11_read_sensor(&sht11_val, HUMIDITY|TEMPERATURE);
+        mAh = ltc4150_get_total_mAh();
         if (!success) {
             printf("error;error;error\n");
         }
         else {
-            printf("%.2f;%.2f;%.2f\n", sht11_val.temperature, sht11_val.relhum, sht11_val.relhum_temp);
+            printf("%.2f;%.2f;%.2f;%.2f\n", sht11_val.temperature, sht11_val.relhum, sht11_val.relhum_temp, mAh);
         }
         LED_RED_TOGGLE;
         swtimer_usleep(60 * 1000*1000);
diff --git a/projects/test_cc110x_ng/Jamfile b/projects/test_cc110x_ng/Jamfile
index 2a13cb0892..5ef69ea238 100644
--- a/projects/test_cc110x_ng/Jamfile
+++ b/projects/test_cc110x_ng/Jamfile
@@ -1,5 +1,5 @@
 SubDir TOP projects test_cc110x_ng ;
 
-Module test_cc110x_ng : main.c : cc110x_ng shell shell_commands transceiver ps rtc posix_io uart0 auto_init swtimer config ;
+Module test_cc110x_ng : main.c : cc110x_ng shell shell_commands transceiver ps rtc posix_io uart0 auto_init swtimer config ltc4150 ;
 
 UseModule test_cc110x_ng ;