For US (and Maybe Canadian) Owners: What is the Group Size of 12V Battery for 2017-2019 IONIQ Electric? | Hyundai IONIQ Forum
All 2020 Hyundai hybrids have a clever 12-volt lithium-ion accessory battery
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2019 Hyundai Ioniq PHEV review: relaxed and roomy, but lacks vigour
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Hyundai IONIQ Plug-in Hybrid (2017) Charging Guide | Pod Point
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12v battery replacement 2019 PHEV | Hyundai IONIQ Forum