2023-03-20 - RCA for Battery Sag

Update the title following the format: Jan 01, 2023 - RCA Name

Incident overview

batteries sagged during operation. See ardupilot logged uploaded in association with this flight test as that’s all we got.

Describe (approximate) timelines, cross-correlate with telemetry/video recordings/etc if any.

Instructions	Report

Instructions	Report
Leadup List the sequence of events that led to the incident.
Fault Describe what didn't work as expected. If available, include relevant data visualizations.
Detection Report when the team detected the incident and how they knew it was happening. Describe how the team could've improved time to detection.
Response Report who responded to the incident and describe what they did at what times. Include any delays or obstacles to responding.
Recovery Report how the user impact was mitigated and when the incident was deemed resolved. Describe how the team could've improved time to mitigation.
Five whys root cause identification Run a 5-whys analysis to understand the true causes of the incident.
Related records Check if any past incidents could've had the same root cause. Note what mitigation was attempted in those incidents and ask why this incident occurred again.
Lessons learned Describe what you learned, what went well, and how you can improve.

Actionable Recommendation	Reasoning

Actionable Recommendation	Reasoning
Return Batteries	They are cheap knockoff batteries
Otherwise test batteries	Run some current and observe the voltage with better measurement equipment (current clamp and oscope probe from Keysight) than we have on the drone