Electric vehicles have revolutionized the way we drive, but nothing is more frustrating than plugging in your car and realizing your charger isn’t delivering the speed you expect. Whether you’re topping off overnight or grabbing a quick charge before heading out in traffic, slow charging can throw off your entire routine.

At AstroWatt Electric, we help homeowners get the most from their EV chargers. If your charging speed has slowed down, here are four common reasons why – and what you can do about it.

1. Your Electrical Panel May Be Maxed Out

One of the most common reasons for sluggish EV charging is that your home’s electrical panel simply can’t handle the load. Many homes in Apex were built long before electric vehicles were common. If your panel is already managing your HVAC, appliances, and lighting, adding a high-powered EV charger might overload the system.

Signs of a strained electrical panel:

• Lights dimming when the charger kicks on
• Breakers tripping during charging sessions
• Warm or buzzing panel surfaces

If you’re experiencing any of these, it’s worth having an electrician evaluate whether your panel needs an upgrade to support faster, safer EV charging.

2. Your Charger Isn’t the Right Size for Your Vehicle

Not all EV chargers are created equal. Level 1 chargers (standard wall outlets) are slow and may only add 3-5 miles of range per hour – fine for occasional top-offs but inadequate for daily driving needs.

Level 2 chargers deliver significantly faster charging speeds, but only if they’re matched to your vehicle’s charging capacity. Some vehicles can accept higher kilowatt (kW) rates than your charger can deliver, limiting how fast your car can “fill up.”

If you recently purchased a new EV or upgraded your model, check your car’s maximum charging capability and ensure your home charger can deliver the speed your vehicle is designed for.

3. Temperature Extremes Affect Charging Speed

Apex summers can be blazing hot, and winters sometimes dip lower than you’d expect. Temperature extremes affect battery chemistry, making it harder for your vehicle to accept a charge quickly.

EV chargers, and the batteries themselves, have built-in safeguards to slow charging and prevent damage when temperatures are too high or too low. So, if your charger seems sluggish during the hottest or coldest days, it may simply be your car protecting its battery.

Whenever possible, charge your vehicle indoors or during moderate times of day to maintain optimal charging speeds.

4. Hidden Electrical Issues Could Be Holding You Back

Slow charging can sometimes point to hidden electrical issues in your home’s wiring. Loose connections, undersized wiring, or aging circuits can reduce power delivery to your EV charger, even if your panel is technically large enough.

Symptoms of electrical issues include:

• Flickering lights during charging
• A burning smell near outlets or panels
• A charger that randomly shuts off

Professional inspection by a licensed electrician ensures your home’s wiring is safe and capable of handling your charging needs. Not only can this improve your EV’s charging speed, but it also helps protect your home from electrical hazards.

Don’t Put Up with Slow Charging, Call the Local Experts

Driving an EV should be convenient, not stressful. If your EV charger isn’t charging at full speed, the team at AstroWatt Electric can help. From electrical panel upgrades to new Level 2 charger installations, we’re here to keep Apex drivers fully powered and ready for the road.

Call AstroWatt Electric at (984) 204-7648 to schedule an inspection or EV charger upgrade today – and get back to fast, worry-free charging!