Reply from Kenwood
Thank you for your email. Our dash cams are designed for EV vehicles and having sold huge quantities, we have had no issues in terms of battery drainage. In parking mode (standby) consumption is approximately 9~10mA. During parking mode recording :DRV-A610W + RCA-210 (with rear camera): power consumption is approximately 5.4WPlease note in Parking Mode, the dash cam will only wake up and start recording if it detects vibration/impact, otherwise it will remain in standby.John
To be fair got prompt reply in about an hour, auto reply said up to 5 days.
However; they’re hardly going to say it’s a problem and don’t buy one 😀