▲ 0 r/Ioniq5
If your on the fence about getting a L2 EVSE...
Edit : Sorry, this wasn't meant to say everyone should install L2, just some info to add to the decision.
This might help...
Saw this article:
https://insideevs.com/news/805275/home-ev-charging-losses-how-to-minimize/
So I decided to ask Gemini :
Level 1 charging (120V) on the Hyundai Ioniq 5 typically experiences a total charging loss of 20% to 30% (meaning overall efficiency is roughly 70%–80%).
By comparison, Level 2 (240V) charging on the Ioniq 5 is much more efficient, with losses generally between 8% and 15% (85%–92% efficiency).
Why Are Level 1 Losses So High?
- Base Overhead Power Consumption: When the Ioniq 5 is actively charging, its onboard computers, cooling/heating pumps, battery management systems (BMS), and relays stay powered on. These systems draw a fixed overhead of roughly 200 to 400 Watts continuous power.
- At Level 1 (120V / 12A), total power delivered from the wall is only about 1.4 kW (1,400 Watts). Subtracting ~350W for vehicle electronics leaves only ~1,050W going into the battery—meaning 25% or more of the energy drawn from your wall is consumed just keeping the car awake.
- At Level 2 (240V / 48A), total power is roughly 11.5 kW (11,500 Watts). A 350W overhead represents less than 3% of the total draw.
- Longer Charge Times: Because Level 1 charges so slowly, those overhead systems must run for days to deliver a full charge, compounding the cumulative energy lost.
- AC-to-DC Inverter Efficiency: The Ioniq 5’s internal On-Board Charger (OBC) is designed primarily to handle high-power Level 2 AC input (up to 11.5 kW). Operating the inverter at low Level 1 power levels places it at the bottom of its efficiency curve.
I realize it will take a long time to make up the cost of purchase and installation but if you're on the fence it's something to consider.
u/Professional-Pool668 — 14 hours ago
