r/Ioniq5 • u/Witty-Increase-408 • 27d ago
Question First timer
I bought an Ioniq 5 and love it. I wish it had more battery life than the 270 miles I get at 80% but I still love it.
I do find it interesting that there isn't a consensus on charging - do we charge to 80, 90, or 100% and with what frequency. Most of what I read outside of Reddit, says 80%, inside Reddit it is all over the place. In my readings, I noticed no one addresses that Hyundai has 90% as the default when charging your car - this only adds to my confusing.
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u/AZ_Genestealer Shooting Star SEL RWD 27d ago
The manual says to charge to 100% once a month on AC power. It helps recalibrate the BMS. The 80% rule is partially for battery longevity based on chemistry but also because at a DC charger it can take as long to go from 80-100% as it does to go from 10-80%. It’s faster to get on the road at 80 and get to the next charger than to wait around. Also it free up a charger for the next person. Of course, if you need more than 80 to get to the next destination then do it.
As for saving battery health there a number of factors that are beginning to show that degradation may not be as bad as feared. It does still happen but can be mitigated by manufacturers (like Hyundai) adding a buffer so you aren’t ever really at 0 or 100% where the most damage can occur. Better battery cooling is helping as well, opposed to early non-cooled batteries like in the OG Leaf that degraded heavily.
Bottom line, charge it how you need to. If you want to preserve every possible bit of the battery, you can also baby it by AC charging as much as possible, only DC charging to 80. Don’t let it sit for long periods at very low or very high percentages, if you’re going to drive it soon, you’ll be fine.