MONITORING THE IONIQ 5'S 12-VOLT BATTERY: INSTALLING AND USING A BATTERY MONITOR

EV Channels Review

This video details the installation and use of a 12-volt battery monitor in a Hyundai IONIQ 5, prompted by a previous battery failure. The reviewer demonstrates how to connect the monitor and utilize the companion app to track battery voltage and charging behavior. Key findings indicate that the IONIQ 5 does actively charge the 12-volt battery when in 'ready mode,' 'utility mode,' or when using the app for climate control, and also during driving. However, the reviewer notes unexplained dips in voltage and a lack of a clear charging indicator, unlike some other EVs. Hyundai has acknowledged known issues with the charging door and module that can accelerate 12-volt battery depletion, and has booked the reviewer's car for inspection. The reviewer suggests that while the 12-volt battery is essential for safety and component operation, the reliance on traditional lead-acid batteries is a drawback, advocating for lithium-ion alternatives. The overall verdict is that the battery monitor is a valuable tool for understanding and potentially preventing 12-volt battery issues, though the underlying cause of depletion in some EVs remains a concern that Hyundai appears to be addressing.