Each alert states the rule that fired, the readings behind it, the threshold it crossed and how confident you can be. Repeated detections update one alert rather than creating new ones.
5 of the last 5 connector voltage drop observations exceeded 35 mV — the larger of the baseline median 32.4 mV plus 3.5 robust spreads (spread 0.648 mV, from the first 12 observations) and +8% of the median. The largest deviation was 22.3 spreads (45%) above baseline; 5 reading(s) were at least 30% above it.
Confidence: Based on 26 valid observations. A deviation from this charger's own history is not proof of physical degradation; measurement method changes, sensor faults or operating conditions can produce the same pattern.
Suggested action: Schedule a physical inspection of the connector (contacts, pins, latch, cable strain relief) and repeat the measurement.
Window 26 Sept 2026, 10:00 UTC to 24 Oct 2026, 10:00 UTC. Detected 1 time with new evidence.
Open full alert and change status| Readings above threshold | 5 of last 5 | needs 3 |
|---|---|---|
| Deviation threshold | 35 mV | median + 3.5 spreads, at least +8% |
| Baseline median | 32.4 mV | 12 readings |
| Largest deviation | 22.3 spreads | spread 0.648 mV |
Over the last 10 observations (63 days), contact resistance rose by about 0.11 mΩ (43% of the baseline median 0.254 mΩ). 93% of point-to-point comparisons were increases (threshold 75%).
Confidence: Trend estimated with the Theil–Sen median slope, which tolerates a minority of outliers. 10 points is a short series; the trend may not continue.
Suggested action: Inspect the connector and compare against the operator's maintenance limits; consider increasing measurement frequency.
Window 22 Aug 2026, 10:00 UTC to 24 Oct 2026, 10:00 UTC. Detected 1 time with new evidence.
Open full alert and change status| Change across window | 43% | needs 15% |
|---|---|---|
| Consistent increases | 93% | needs 75% |
| Slope | 0.052 mΩ / 30 days | Theil–Sen median slope |
| Baseline median | 0.254 mΩ | 12 readings |
Over the last 10 observations (63 days), contact resistance rose by about 0.159 mΩ (51% of the baseline median 0.314 mΩ). 100% of point-to-point comparisons were increases (threshold 75%).
Confidence: Trend estimated with the Theil–Sen median slope, which tolerates a minority of outliers. 10 points is a short series; the trend may not continue.
Suggested action: Inspect the connector and compare against the operator's maintenance limits; consider increasing measurement frequency.
Window 22 Aug 2026, 10:00 UTC to 24 Oct 2026, 10:00 UTC. Detected 1 time with new evidence.
Open full alert and change status| Change across window | 51% | needs 15% |
|---|---|---|
| Consistent increases | 100% | needs 75% |
| Slope | 0.076 mΩ / 30 days | Theil–Sen median slope |
| Baseline median | 0.314 mΩ | 12 readings |
15 connector-related faults were logged in the 30 days ending 2026-10-24 (monitor at 3, inspection at 8), versus a historical rate of about 0.4 per 30 days.
Confidence: Fault codes are logged by the charger and may include causes unrelated to the connector (vehicle-side, network or user handling).
Suggested action: Review the fault codes with the operator and inspect the connector and cable assembly.
Window 24 Sept 2026, 10:00 UTC to 24 Oct 2026, 10:00 UTC. Detected 1 time with new evidence.
Open full alert and change status| Faults in 30 days | 15 | monitor at 3, inspect at 8 |
|---|---|---|
| Historical rate | 0.4 per 30 days |
5 of the last 5 contact resistance observations exceeded 0.352 mΩ — the larger of the baseline median 0.314 mΩ plus 3.5 robust spreads (spread 0.011 mΩ, from the first 12 observations) and +8% of the median. The largest deviation was 18.4 spreads (62%) above baseline; 5 reading(s) were at least 30% above it.
Confidence: Based on 26 valid observations. A deviation from this charger's own history is not proof of physical degradation; measurement method changes, sensor faults or operating conditions can produce the same pattern.
Suggested action: Schedule a physical inspection of the connector (contacts, pins, latch, cable strain relief) and repeat the measurement.
Window 26 Sept 2026, 10:00 UTC to 24 Oct 2026, 10:00 UTC. Detected 1 time with new evidence.
Open full alert and change status| Readings above threshold | 5 of last 5 | needs 3 |
|---|---|---|
| Deviation threshold | 0.352 mΩ | median + 3.5 spreads, at least +8% |
| Baseline median | 0.314 mΩ | 12 readings |
| Largest deviation |
5 of the last 5 connector voltage drop observations exceeded 36.4 mV — the larger of the baseline median 33.7 mV plus 3.5 robust spreads (spread 0.701 mV, from the first 12 observations) and +8% of the median. The largest deviation was 10.1 spreads (21%) above baseline.
Confidence: Based on 26 valid observations. A deviation from this charger's own history is not proof of physical degradation; measurement method changes, sensor faults or operating conditions can produce the same pattern.
Suggested action: Keep monitoring; confirm the next measurement uses the same method and conditions.
Window 26 Sept 2026, 10:00 UTC to 24 Oct 2026, 10:00 UTC. Detected 1 time with new evidence.
Open full alert and change status| Readings above threshold | 5 of last 5 | needs 3 |
|---|---|---|
| Deviation threshold | 36.4 mV | median + 3.5 spreads, at least +8% |
| Baseline median | 33.7 mV | 12 readings |
| Largest deviation | 10.1 spreads |
3 connector-related faults were logged in the 30 days ending 2026-10-24 (monitor at 3, inspection at 8), versus a historical rate of about 0.2 per 30 days.
Confidence: Fault codes are logged by the charger and may include causes unrelated to the connector (vehicle-side, network or user handling).
Suggested action: Review the logged fault codes for a common cause before the next maintenance visit.
Window 24 Sept 2026, 10:00 UTC to 24 Oct 2026, 10:00 UTC. Detected 1 time with new evidence.
Open full alert and change status| Faults in 30 days | 3 | monitor at 3, inspect at 8 |
|---|---|---|
| Historical rate | 0.2 per 30 days |
Over the last 10 observations (63 days), connector voltage drop rose by about 6.99 mV (21% of the baseline median 33.7 mV). 91% of point-to-point comparisons were increases (threshold 75%).
Confidence: Trend estimated with the Theil–Sen median slope, which tolerates a minority of outliers. 10 points is a short series; the trend may not continue.
Suggested action: Increase measurement frequency to confirm or rule out the trend.
Window 22 Aug 2026, 10:00 UTC to 24 Oct 2026, 10:00 UTC. Detected 1 time with new evidence.
Open full alert and change status| Change across window | 21% | needs 15% |
|---|---|---|
| Consistent increases | 91% | needs 75% |
| Slope | 3.328 mV / 30 days | Theil–Sen median slope |
| Baseline median | 33.7 mV | 12 readings |
5 of the last 5 contact resistance observations exceeded 0.232 mΩ — the larger of the baseline median 0.215 mΩ plus 3.5 robust spreads (spread 0.005 mΩ, from the first 12 observations) and +8% of the median. The largest deviation was 11.3 spreads (26%) above baseline.
Confidence: Based on 26 valid observations. A deviation from this charger's own history is not proof of physical degradation; measurement method changes, sensor faults or operating conditions can produce the same pattern.
Suggested action: Keep monitoring; confirm the next measurement uses the same method and conditions.
Window 26 Sept 2026, 10:00 UTC to 24 Oct 2026, 10:00 UTC. Detected 1 time with new evidence.
Open full alert and change status| Readings above threshold | 5 of last 5 | needs 3 |
|---|---|---|
| Deviation threshold | 0.232 mΩ | median + 3.5 spreads, at least +8% |
| Baseline median | 0.215 mΩ | 12 readings |
| Largest deviation | 11.3 spreads |
5 of the last 5 contact resistance observations exceeded 0.291 mΩ — the larger of the baseline median 0.26 mΩ plus 3.5 robust spreads (spread 0.009 mΩ, from the first 12 observations) and +8% of the median. The largest deviation was 8.4 spreads (29%) above baseline.
Confidence: Based on 26 valid observations. A deviation from this charger's own history is not proof of physical degradation; measurement method changes, sensor faults or operating conditions can produce the same pattern.
Suggested action: Keep monitoring; confirm the next measurement uses the same method and conditions.
Window 26 Sept 2026, 10:00 UTC to 24 Oct 2026, 10:00 UTC. Detected 1 time with new evidence.
Open full alert and change status| Readings above threshold | 5 of last 5 | needs 3 |
|---|---|---|
| Deviation threshold | 0.291 mΩ | median + 3.5 spreads, at least +8% |
| Baseline median | 0.26 mΩ | 12 readings |
| Largest deviation | 8.4 spreads |
Over the last 10 observations (63 days), contact resistance rose by about 0.083 mΩ (32% of the baseline median 0.26 mΩ). 91% of point-to-point comparisons were increases (threshold 75%).
Confidence: Trend estimated with the Theil–Sen median slope, which tolerates a minority of outliers. 10 points is a short series; the trend may not continue.
Suggested action: Increase measurement frequency to confirm or rule out the trend.
Window 22 Aug 2026, 10:00 UTC to 24 Oct 2026, 10:00 UTC. Detected 1 time with new evidence.
Open full alert and change status| Change across window | 32% | needs 15% |
|---|---|---|
| Consistent increases | 91% | needs 75% |
| Slope | 0.039 mΩ / 30 days | Theil–Sen median slope |
| Baseline median | 0.26 mΩ | 12 readings |
Over the last 10 observations (63 days), contact resistance rose by about 0.045 mΩ (21% of the baseline median 0.215 mΩ). 91% of point-to-point comparisons were increases (threshold 75%).
Confidence: Trend estimated with the Theil–Sen median slope, which tolerates a minority of outliers. 10 points is a short series; the trend may not continue.
Suggested action: Increase measurement frequency to confirm or rule out the trend.
Window 22 Aug 2026, 10:00 UTC to 24 Oct 2026, 10:00 UTC. Detected 1 time with new evidence.
Open full alert and change status| Change across window | 21% | needs 15% |
|---|---|---|
| Consistent increases | 91% | needs 75% |
| Slope | 0.021 mΩ / 30 days | Theil–Sen median slope |
| Baseline median | 0.215 mΩ | 12 readings |
5 of the last 5 contact resistance observations exceeded 0.274 mΩ — the larger of the baseline median 0.254 mΩ plus 3.5 robust spreads (spread 0.006 mΩ, from the first 12 observations) and +8% of the median. The largest deviation was 18.7 spreads (42%) above baseline.
Confidence: Based on 26 valid observations. A deviation from this charger's own history is not proof of physical degradation; measurement method changes, sensor faults or operating conditions can produce the same pattern.
Suggested action: Keep monitoring; confirm the next measurement uses the same method and conditions.
Window 26 Sept 2026, 10:00 UTC to 24 Oct 2026, 10:00 UTC. Detected 1 time with new evidence.
Open full alert and change status| Readings above threshold | 5 of last 5 | needs 3 |
|---|---|---|
| Deviation threshold | 0.274 mΩ | median + 3.5 spreads, at least +8% |
| Baseline median | 0.254 mΩ | 12 readings |
| Largest deviation | 18.8 spreads |
| 18.4 spreads |
| spread 0.011 mΩ |
| spread 0.701 mV |
| spread 0.005 mΩ |
| spread 0.009 mΩ |
| spread 0.006 mΩ |