diff --git a/docs/kb/laptop-power-limit.md b/docs/kb/laptop-power-limit.md
new file mode 100644
index 00000000000..77d35e8d335
--- /dev/null
+++ b/docs/kb/laptop-power-limit.md
@@ -0,0 +1,36 @@
+# Laptop power limits
+
+This article describes how power limiting works on Dasharo firmware for laptops.
+
+## Power sources
+
+A laptop may be powered from AC, or from battery. Each of these two has a limit
+on how much power it can provide.
+
+- AC barrel jack: Depends on the wattage of the included power supply
+- USB-PD: Depends on the wattage rating of the specific power supply being used,
+  and on the contract that was negotiated between the laptop and power supply
+- Battery: Depends on the maximum discharge rate specified by the manufacturer
+  and on charge level
+
+The Embedded Controller must observe what sources of power are present and
+adjust platform power limits accordingly.
+
+To limit power, the CPU is throttled using the Psys power limit mechanism. This
+ensures that the power draw does not exceed the limit, by proactively throttling
+CPU performance.
+
+## AC power limit
+
+This limit is a minimum of:
+
+- Power supply wattage x estimated power conversion efficiency
+- Maximum current rating of the input power rail
+- Wattage of the included AC power supply
+
+## DC power limit
+
+This power limit is a minimum of:
+
+- Battery capacity x 1C discharge rate
+- Maximum current rating of the battery power rail
diff --git a/mkdocs.yml b/mkdocs.yml
index bf84368d46a..f50ddd6070a 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -461,6 +461,7 @@ nav:
           - 'Capsule Update Configs': kb/capsule-updates-configs.md
       - 'PCR Measurements': kb/pcr-measurements.md
       - 'NovaCustom dev setup': kb/laptop-dev-env.md
+      - 'Laptop power limits': kb/laptop-power-limit.md
     # - 'Trolling Topics List':
     #     - 'Introduction': osf-trolling-list/osf_issues_taxonomy.md
   - 'FAQ':