diff --git a/tests/batt_mon.sh b/tests/batt_mon.sh
new file mode 100644
index 0000000..d0586fd
--- /dev/null
+++ b/tests/batt_mon.sh
@@ -0,0 +1,9 @@
+while [ 1 ]
+
+do
+
+echo $(date) $(cat /sys/class/power_supply/pm8916-bms-vm/capacity) >> battery.log
+
+sleep 30
+
+done
\ No newline at end of file