What not to assume when working with data by Ville Parviainen

[daria-sukhareva]

What CPOs Look for in an EV Charger: Insights from 160+ Model Benchmarks

• The best models keep heartbeat timing within a narrow range even when session traffic spikes.
• Unstable models show jitter or unstable network connection, which causes disconnects and missed status notifications.
• Many models pass lab tests but degrade in the field example because the wireles network singnals are weaker which itself then can cascade to blocking operations during transactions.
• StartTransaction timestamp on the charger is wrong, or measurement reading is wrong.
• StopTransaction missing or incomplete, charger clock not synced and timestamp is wrong or measurement is wrong.
• Incorrect meter value formatting, not using same logic to read values as in transaction events.
• Faulted state transitions that never reset
• Firmware update operations not clearly documented or failing on download
• Unnecessary use of proprietary extensions