diff --git a/notes/first-test-drive.md b/notes/first-test-drive.md
index 1cabfb2..f291903 100644
--- a/notes/first-test-drive.md
+++ b/notes/first-test-drive.md
@@ -34,7 +34,7 @@ tags:
 
 | Area | Observation | Status |
 |---|---|---|
-| Power | Power bank reported low voltage | Investigate later |
+| Power | Raspberry Pi desktop showed a low-voltage warning while powered by the power bank | Investigate later |
 | ADB | Connection dropped during the drive | Investigate later |
 | Speed | Readings were a few km/h low | Investigate later |
 | Peak speed | Trip report missed the observed top speed | Investigate later |
@@ -49,12 +49,14 @@ tags:
 
 ## Detailed notes
 
-### Power bank and low-voltage warning
+### Raspberry Pi low-voltage warning while using the power bank
 
-- The power bank showed a low-voltage alert.
+- The Raspberry Pi showed a desktop-environment notification saying: **"Low voltage. Please check power supply."**
+- This happened while the Pi was running from the power bank.
+- The power bank itself did not report the warning.
 - Possible relation to the Pi, the AWUS1900, Wi-Fi instability, or other USB hardware is unknown.
 
-**Follow-up question:** Is the power bank providing stable and sufficient power under load?
+**Follow-up question:** Is the power bank providing stable and sufficient power to the Raspberry Pi under load?
 
 ### ADB connection drops
 
@@ -89,7 +91,7 @@ tags:
 
 **Follow-up questions:**
 
-- Does the AWUS1900 reset when the power bank reports low voltage?
+- Does the AWUS1900 reset when the Raspberry Pi reports low voltage while powered by the power bank?
 - Do Wi-Fi disconnects occur at the same time as ADB and Android Auto disconnects?
 - Is the built-in Pi Wi-Fi adapter still stable when the AWUS1900 drops?
 
@@ -193,7 +195,7 @@ The cause is unknown. The UI should continue to show battery values as unavailab
 
 ## English rewrite
 
-- **Power bank:** Low-voltage alert.
+- **Raspberry Pi:** The desktop environment showed a low-voltage warning saying, **"Low voltage. Please check power supply."** while the Pi was running from the power bank.
 - **ADB connection dropped.**
   - This was visible in the phone app and in the trip GPS data.
 - **Speed was a few km/h off.**
@@ -227,7 +229,7 @@ The cause is unknown. The UI should continue to show battery values as unavailab
 
 ## Original notes in Danish
 
-- Power bank = low voltage alert
+- Raspberry Pi desktop environment showed a low-voltage warning ("Low voltage. Please check power supply") while running through the power bank
 - ADB connection dropper ud
   - Ses på telefon app, og trip GPS data
 - Speed er få km/h off (65 -> 63-64 km/h)