KIA E-NIRO'S 12-VOLT BATTERY FAILS AGAIN! JUMP STARTING, BATTERY TESTING AND TALKING ABOUT 12-VOLTS

EV Channels Review

The reviewer details recurring issues with the 12-volt battery in their Kia e-Niro, which has led to the vehicle being unable to start on multiple occasions. Despite the car's main high-power battery, the 12-volt system continues to fail, even without accessories like the OVMS plugged in. The video explains the necessity of 12-volt batteries in EVs for powering essential components and as a safety fail-safe. While the e-Niro's 'Auxiliary Battery Saver Plus' is supposed to maintain the 12-volt charge, the reviewer's experience suggests it's not functioning adequately, leading to critical battery levels. Testing with a battery tester indicates the battery is either faulty or not holding charge effectively, despite previous checks deeming it fine. The reviewer suggests that frequent deep discharges may be degrading the battery's lifespan. While acknowledging that cold weather exacerbates the issue and that other EV models can experience similar problems, the reviewer concludes that the e-Niro's 12-volt system should be more robust, possibly requiring a better-quality battery or a software update, similar to fixes seen in Tesla models.