Add battery charge limiter for laptop

roles/laptop/files/lib/systemd/system/battery-charge-threshold.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=Set the battery charge threshold
+After=multi-user.target
+StartLimitBurst=0
+
+[Service]
+Type=oneshot
+Restart=on-failure
+ExecStart=/bin/bash -c 'echo 80 > /sys/class/power_supply/BAT0/charge_control_end_threshold'
+
+[Install]
+WantedBy=multi-user.target

roles/laptop/tasks/battery.yml

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+- name: Check if laptop has option to limit battery
+  stat:
+    path: /sys/class/power_supply/BAT0/charge_control_end_threshold
+  register: battery_limiter_available
+
+- when: battery_limiter_available.stat.exists
+  block:
+    - name: Copy service to limit battery charge
+      become: yes
+      copy:
+        src: lib/systemd/system/battery-charge-threshold.service
+        dest: /lib/systemd/system/battery-charge-threshold.service
+
+    - name: Enable battery limit service
+      become: yes
+      systemd:
+        name: battery-charge-threshold
+        enabled: yes

roles/laptop/tasks/main.yml

@@ -0,0 +1 @@
+- import_tasks: battery.yml