docs/unified/novacustom/battery-management.md: add file

Signed-off-by: Jan Baziuk <jan.baziuk@3mdeb.com>

docs/unified/novacustom/battery-management.md

@@ -0,0 +1,42 @@
+# NovaCustom power and battery subsystem
+
+NovaCustom laptops equipped with Dasharo firmware provide several battery
+management mechanisms to optimize user experience and further prolong the
+battery's lifespan.
+
+## Boot  block when the battery is low
+
+To prevent corruption of the bootloader, which may occur due to sudden power cut
+off during the OS boot process, booting the OS is blocked when the battery level
+sits below 5%. When trying to boot the OS with the battery level below the
+defined threshold, following message will be displayed on screen:
+
+![](images/boot_block_popup.jpg)
+
+## Disconnected battery warning
+
+When the firmware encounters problems with detecting the battery, following
+message will appear suggesting checking the physical connection between the
+battery and mainboard:
+
+![](images/battery_connection.jpg)
+
+## Power information error
+
+When the firmware encounters problems with retrieving information about AC and
+battery state, following error message will be displayed:
+
+![](images/power_error.jpg)
+
+## Charging levels
+
+Dasharo firmware implements various battery charging level limits, which can
+vastly extend the lifespan of the battery:
+
+- plugging in the charger when the battery level sits below 95%, will result in
+    charging the battery until 98% of capacity is reached. The battery status
+    will then change to `not charging`
+
+- plugging in the charger when the battery level sits between 95% and 98%, will
+    result in not activating the battery charging mechanism util the battery
+    level below 95% is reached.

mkdocs.yml

@@ -92,6 +92,7 @@ nav:
           - 'Post-installation setup': unified/clevo/post-install.md
           - 'RGB keyboard': unified/novacustom/rgb-keyboard.md
           - 'Fn lock hotkey': unified/novacustom/fn-lock-hotkey.md
+          - 'Battery management': unified/novacustom/battery-management.md
           - 'Fan profiles': unified/novacustom/fan-profiles.md
           - 'Firmware update using fwupd': unified/novacustom/fwupd-usage.md
           - 'NV4x 12th Gen':