Understanding AC and DC Charging: Key Differences and When to Use Each

As electric vehicles (EVs) gain momentum in the global shift toward sustainable transportation, understanding how they charge is essential—especially the distinction between AC (Alternating Current) and DC (Direct Current) charging. Each serves a different purpose and offers unique advantages depending on the situation.

What’s the Difference Between AC and DC Charging?

The core difference between AC and DC charging lies in how electricity is delivered and processed. The power grid supplies electricity in the form of AC, which is compatible with most residential and commercial power sources. However, EV batteries can only store energy in DC form.

In AC charging, the EV’s onboard charger converts AC power into DC before storing it in the battery. This process is relatively slow and limited by the power capacity of the onboard charger, usually between 3.6 kW and 22 kW.

In contrast, DC charging bypasses the onboard converter entirely by supplying DC power directly to the battery via a high-powered external charger. This allows for much faster charging, often delivering between 50 kW and 350 kW, depending on the vehicle and station.

ACMobility recently launched its new charging stations which are also complemented with the introduction of SuperFast and UltraFast Chargers. Both chargers have the capability of charging up to 480kW, which will help significantly enhance the EV ownership and charging experience for more Filipinos nationwide.

Advantages of AC Charging

1. Ideal for Extended Parking

   AC charging works best where vehicles naturally stay parked for longer periods—at home, at work, or while staying overnight. With a Level 2 AC charger, most EVs can fully recharge within 6 to 12 hours, making charging a seamless part of daily routines.

2. More Accessible and Cost-Efficient

   AC chargers are generally more affordable to install and maintain. They can often be supported by existing electrical infrastructure, avoiding the need for extensive upgrades. This makes AC charging a practical solution for residential, workplace, and destination charging.

Advantages of DC Charging

1. Fast Charging for Long-Distance Travel

   DC charging is designed for situations where speed matters—such as road trips or time-sensitive stops. Many EVs can recharge up to 80% in 20 to 60 minutes using a DC fast charger, significantly reducing downtime while traveling.

2. Built for Public and High-Traffic Locations

   DC chargers are typically deployed in public, high-traffic areas like highway service stops, shopping centers, and transit hubs. This enables quicker vehicle turnover and supports drivers who rely on public charging rather than home setups.

Which Should You Use?

• Use AC charging when time is on your side—such as overnight or during work hours.

• Use DC charging when you’re on the move and need quick power, especially on long trips.

Together, AC and DC charging options form a complementary ecosystem, ensuring EV drivers have flexible, efficient, and reliable ways to stay charged—no matter the journey. ACMobility is proud to provide both, and at a growing number of convenient locations nationwide.

EV Safety 101: How to Charge Your Vehicle Without Worry—Rain or Shine

With proper practices and the right equipment, EV owners can confidently power up in any weather.

Weather in the Philippines has become increasingly unpredictable. Weeks can quickly shift from scorching heat to days of continuous rain. These sudden changes present challenges to car owners, especially those with electric vehicles (EVs). One common concern is the safety of EV charging during extreme weather, particularly in heavy rain, floods, or high heat.

To help EV owners stay safe and powered up no matter the weather, ACMobility, a leading provider of EV charging solutions and infrastructure in the Philippines, shares a few essential tips for charging smartly and safely during periods of extreme heat or heavy rain.

1. Check Charging Station Availability and Status First

When the weather swings from scorching heat to sudden downpours, being prepared makes all the difference. Before heading out, EV owners are encouraged to first check the availability of charging stations in their area. This can be easily done through e-mobility platforms such as the Evro app, which features a Station Finder that shows all Department of Energy (DOE)-registered public charging stations nationwide. Apart from locating the nearest charging station, Evro also lets EV drivers check the status of each station in real time, manage their sessions, and process their payments of Evro Station Partners, all in one app — helping them plan their trips with more ease and confidence.

2. Know Your Car’s Charging Guidelines and Overall Condition

Similar to conventional Internal Combustion Engine (ICE) vehicles, it is essential for EV owners to check their vehicle manual for proper procedures, equipment compatibility, and emergency features, especially before charging. Brushing up on these basics could help save drivers from unnecessary risks, especially during unpredictable weather. Likewise, EV owners are encouraged to avoid charging in flooded areas as such may increase safety risks and affect vehicle performance. These precautions help ensure both safety and the longevity of the vehicle.

Likewise, it is also a must to check the condition of one's vehicle if it has been exposed to deep floodwaters before charging. Users are advised to check for signs of water entry in the charging port, undercarriage, or cabin, particularly if floodwaters may have reached the level of the charging port, and monitor for any battery warning lights.

Extreme heat is another factor to be mindful of. After long drives or use under intense heat, it is best to let the EV cool down and check its condition before charging. This prevents unnecessary strain on the battery, which, like a gas-powered engine, performs best when properly managed.

If anything feels unusual, whether due to rain or extreme heat, the safest option is to have the EV inspected at an authorized technician or service center before charging.

3. Use The Right Charger for Your Vehicle

EV owners should always ensure that the charger and plug match their vehicle’s specifications. The use of adapters or extension cords is strictly not allowed, as these can cause overheating, damage both the EV and the charger, or become fire hazards.

Universally, there are two main types of EV chargers: AC (alternating current) and DC (direct current). AC chargers, which provide up to 22 kW of power, are the ones most widely available through the ACMobility network. For EVs equipped with faster on-board chargers, they can deliver a full charge in about three to four hours.

For other vehicles, charging from 20% to 80% typically takes up to eight hours, depending on the battery size and conditions. Meanwhile, ACMobility’s DC chargers deliver 60kW, 120kW, 240 kW and 480 kW of power, and can charge an EV from 20% to 80% in just 20 to 60 minutes. The 60 kW and 120 kW units are referred to as Fast Chargers and are available in multiple locations nationwide, while the 240 kW SuperFast and 480 kW UltraFast chargers are currently available at the Corinthian Carpark in Makati. Each charger type uses different connectors. ACMobility’s AC chargers support Mennekes (Type 2), and GB/T connectors; while its DC fast chargers support CCS2 connectors.

If EV owners are unsure of connector compatibility, they can simply register their vehicles through the Evro app. The app will automatically display the compatible connectors and identify charging stations equipped with the appropriate chargers for their specific vehicle.

4. Park and Set Up Safely

EV owners are encouraged to position their vehicles properly and check their surroundings before charging. While ACMobility charging stations are built with proper grounding and level surfaces, drivers should still take care when parking to ensure easy access to the charger. Before plugging in, it is important to inspect the charging station for any visible damage, signs of vandalism, or anything unusual and any issues should be reported right away. When setting up, care should be taken to avoid stretching the charging cable across walkways, especially in wet or slippery conditions, to prevent accidents or wear. Once everything is securely in place, charging can begin safely.

5. If Something Feels Off While Charging, Step Back and Stay Safe

If something goes wrong while charging, such as sparks, unusual sounds, or system errors, do not touch or forcefully unplug the charger. Use the Evro app to safely end the session if possible and move away from the vehicle. Report the issue to the station’s support team or emergency services. Once safe, ensure the power source is switched off before any further action.

Engineered For Safety Together With Our Partners

Apart from Evro, ACMobility’s commitment to building safe and reliable charging stations nationwide is made possible through its strong partnership with Greenstrum, a leader in customized EV charging solutions for private, commercial, and industrial use. A subsidiary of ACMobility, Greenstrum handles the procurement, installation, and maintenance of both AC and DC chargers across the country. To ensure safety and efficiency, charging stations are inspected and maintained at least twice a year, with additional checks conducted as needed.

ACMobility’s charging stations are carefully designed with safety in mind and follow the standards set by the Department of Energy (DOE), Department of Trade and Industry (DTI), and international guidelines. The company also works closely with Evro, Greenstrum, and its site partners to ensure that every station is safe, well-maintained, and fully operational. While ACMobility’s EV infrastructure is built for all-weather performance, EV owners are encouraged to exercise caution, especially during periods of extreme heat or heavy rain.

For any questions on how to use the Evro app, users may reach out through Evro’s in-app messaging service. For emergencies or immediate assistance at any ACMobility charging station, please call the ACMobility Helpline at (02) 7777-ACMo (2266).

A step-by-step guide on how to start and complete your charging session at ACMobility EV Charging Hubs, from plugging in your vehicle to ending the session properly.

An explanation of whether you can use your vehicle's air conditioning during charging.

Clear guidance on why unplugging on time matters, how staying too long affects other EV users, and the policies in place to keep charging fair and efficient.

Reassurance on charging safety during rainy conditions, including built-in safety features of ACMobility chargers and best practices for users.

Important safety reminders on avoiding adapters and using only approved charging equipment to protect both your vehicle and the charging station.

*The use of adapters is currently not allowed and may be updated in accordance with future regulations.

A safety tips and best practices to ensure every charging session is secure and worry-free.