5 Signs Your EV Charger Is Underpowered for Your Vehicle
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Not all Level 2 chargers are created equal, and the right charger for your previous EV might be wrong for your current one. Here are five signs your home charging setup is the bottleneck — and what to do about it.
Sign 1: Your Car Is Not Fully Charged in the Morning
If you plug in at 20% in the evening and wake up to 75% instead of the 80-90% you expected, your charger is not delivering enough power for your overnight charging window. This can happen when:
- You upgraded to a higher-range EV with a larger battery
- Your daily drive increased and you are starting with less remaining range
- Your charging window shortened (later bedtime, earlier departure)
Fix: Move to a higher-amperage charger. Going from a 32A unit to a 48A wall mount adds 8-10 miles per charging hour — often enough to close the gap without changing your routine.
Sign 2: Your EV Shows a Charging Speed Below Its Maximum
Most EVs display current charging power in the app or on the center screen. If your Tesla shows 7.2kW but its onboard charger supports 11.5kW, your charger is the bottleneck. A 32A charger can only deliver 7.7kW — not enough to maximize a vehicle with a higher-rated OBC.
Fix: Match your charger amperage to your vehicle's onboard charger rating. Tesla Model 3/Y needs 48A. Ford F-150 Lightning needs 80A for full speed.
Sign 3: You Are Planning Road Trips Around Overnight Charging
If you find yourself needing 12+ hours of charging before a road trip to get to 100%, your charger is too slow for your vehicle's battery size. The AC Pro 80A at 19.2kW can charge many large-battery EVs from 20% to 80% in 3-4 hours — completely changing the road trip preparation experience.
Sign 4: You Have Added a Second EV to the Household
Two EVs sharing one charger on alternating nights means each vehicle gets fewer charging hours. The math that worked for one car stops working for two. This is when a higher-amperage dedicated circuit — or a second charger circuit — makes the difference.
Fix: Install a dedicated 48A hardwired charger for the primary vehicle and use a portable 32A unit on a second NEMA 14-50 outlet for the secondary vehicle.
Sign 5: You Upgraded Your EV and Kept the Old Charger
A 32A charger that worked perfectly for a Chevy Bolt becomes a bottleneck for a Tesla Model Y, which can accept 48A. The charger you bought for your first EV may simply be the wrong tool for the vehicle you have now.
Fix: Evaluate your current vehicle's onboard charger rating and compare it to what your home charger delivers. If there is a significant gap, upgrade the charger — the investment pays back in flexibility, speed, and reduced charging anxiety.
Upgrade Your Setup
Whether you need a modest step up from 32A to a 40A portable, a wall-mount upgrade to the IYILO 48A, or a full 80A hardwired installation, the right charger makes your EV work seamlessly with your life.