REQ-011 — Battery Voltage Monitoring
approved · Functional · Approved by demo
Statement
The battery voltage shall be monitored via a 1:2 voltage divider (2×1 MΩ resistors) connected to ADC channel 0. The divider shall be software-disconnectable to prevent quiescent drain during deep sleep. Quiescent drain when active shall not exceed 5 µA.
Acceptance Criteria
Battery monitoring net measures half of battery rail voltage. Divider disconnected in deep sleep. Quiescent drain ≤ 5 µA when enabled.
Linked Test Cases
| Code | Title | Status |
|---|---|---|
TC-A-00 |
Battery voltage divider at VBAT=4.2V | open |
TC-A-01 |
Battery voltage divider at VBAT=3.0V | open |
TC-A-02 |
Battery divider disconnect in deep sleep | open |
Sign-offs
| Stage | Signed by | Role | When | Attestation |
|---|---|---|---|---|
| approved | demo | — | 2026-06-05 06:42 | — |