EcoFlow Alternator Charger
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If you're looking for the ultimate solution for efficient and reliable charging, look no further than the EcoFlow Alternator Charger. Designed to meet the needs of modern adventurers and professionals alike, this powerful charger delivers high-speed energy to keep all your devices up and running, making it an essential companion on any journey.
The EcoFlow Alternator Charger comes in two robust variations: the 500W and 800W models. Both are engineered with precision to enhance your outdoor experiences or optimize your professional ventures. Featuring cutting-edge technology and a compact design, the EcoFlow Alternator Charger fits seamlessly into any setup, providing peace of mind wherever you go.
The 500W model offers a dynamic balance of portability and performance, ideal for quick power-ups while on the move. Whether you're camping in the wild, working on-site, or simply enjoying a day in the great outdoors, this charger ensures your gadgets never run out of juice.
Meanwhile, the 800W model takes power to the next level. Designed for more demanding applications, it offers enhanced charging speeds and greater capacity – perfect for those who require a more substantial power source. From emergency situations to extended outdoor excursions, the 800W model has you covered.
Choosing the EcoFlow Alternator Charger means investing in a product that combines technology, efficiency, and reliability. Its compact design and powerful output make it a must-have for anyone who appreciates being connected and charged no matter where they are. Whether you opt for the 500W model's fantastic portability or the 800W model’s robust power, you're guaranteed a level of convenience and performance that few products can match.
Third-party power stations may connect with the EcoFlow Alternator Charger if they have a XT60 port — similar top-up rate, depending on capacity.
Please note: With the included XT60 cable, the 500W charger does not support reverse charging or battery maintenance modes. These additional functions require the XT150 cable and must be used with an EcoFlow DELTA Series product.
The EcoFlow 500W Alternator Charger and 800W Alternator Charger is not compatible with DELTA Pro Ultra.

The EcoFlow Alternator Charger converts driving time into charging time, delivering 500W or 800W to your portable power station. This makes it up to eight times faster than a regular 12V car outlet. Instead of waiting hours at camp, you arrive with your power station fully charged and ready to run your essentials, tools, and outdoor appliances.
Choose between the 500W and 800W models to suit your lifestyle. The 500W unit is ideal for shorter trips, light usage, and compact setups. The 800W version is perfect for extended road travel, heavy appliance loads, or powering RV systems. Both options ensure fast, efficient charging and greater freedom no matter where your journeys take you.
The EcoFlow Alternator Charger supports both 12V and 24V vehicle systems, making it versatile enough for SUVs, pickups, RVs, and boats. It’s fully compatible with EcoFlow DELTA and RIVER series, plus third-party power stations using XT60 or XT150 connectors. This wide compatibility ensures that no matter your setup, you’ll always have seamless power support while on the road.
This unit does far more than fast charging. It also functions as a battery maintainer, delivering a steady trickle charge to keep your starter battery healthy. If your vehicle battery dies, it acts as a jump starter, giving you the boost needed to get moving again. Three essential features are integrated into one reliable, compact charger.

The EcoFlow Alternator Charger is designed with multiple layers of safety. It includes over-voltage, over-current, short-circuit, reverse-polarity, over-temperature, and undervoltage protection. By drawing power only when your engine is running, it prevents accidental starter battery drain. Smart DC-DC conversion ensures stable energy output, giving you peace of mind that your devices, vehicle, and power station are always protected.
Using advanced Gallium Nitride (GaN) components, the charger operates more efficiently and stays cooler than traditional silicon systems. GaN technology allows for a smaller, lighter design without sacrificing output performance. It provides long-lasting stability, reduced heat buildup, and improved energy conversion. This results in consistent, reliable charging power for years, even under continuous use and demanding travel conditions.
Installation is quick and hassle-free thanks to the included cables, fuses, and mounting board. The EcoFlow Alternator Charger requires no drilling or complex wiring. Mount it under your vehicle’s hood or within your RV and you’re ready in minutes. With a clear step-by-step setup, even non-technical users can easily install and start charging right away without added costs or effort.
Keep track of your energy system with real-time monitoring through the EcoFlow app, Apple CarPlay, or Android Auto. View charging speeds, input wattage, and remaining times directly on your infotainment display or phone. This gives you total control without distraction while driving. With seamless integration, you’ll always know how much power you’re generating and storing on your journey.

Unlike gas generators, the EcoFlow Alternator Charger runs quietly and efficiently. It leverages your vehicle’s alternator to create clean power with zero added emissions. No fuel costs, no engine noise, and no pollution—just reliable electricity whenever you drive. This eco-friendly solution allows you to travel off-grid comfortably while reducing your carbon footprint and enjoying complete peace of mind.

No, the 800W alternator charger's charging logic does not rigidly apply 800 watts. Instead, it depends on the power surplus of the car's alternator. It ensures the alternator is not overloaded, allowing up to a maximum of 800 watts without harming the car's battery.
The product uses the electricity generated by the car's alternator. Even if all the electrical devices inside the car are turned off, the alternator still generates electricity while the car is running. The alternator charger utilizes the surplus electricity generated by the car's alternator and stores it in a portable power station through the charger. The impact on fuel consumption is very minimal.
Drilling is not required for installation. The wiring connection to the alternator at the front of the car does not need drilling and will not damage the vehicle. It can simply be wired through the firewall near the driver's seat. The alternator charger can also be installed using methods that do not require drilling.
The installation of the alternator charger is not very complicated, and it is feasible for professional users with some hands-on ability to install it themselves. However, it is still recommended to contact professional personnel from related workshops for installation. Installation advice: When wiring, avoid high temperature, sharp, and friction-prone areas, and securely fasten the cables to avoid cable wear or loose connections caused by cable movement. The alternator charger may generate high temperatures, so avoid covering the product. After use, avoid immediate direct contact to prevent the risk of burns.
Yes. The alternator charger may generate high temperatures, so avoid covering the product. After use, avoid immediate direct contact to prevent the risk of burns.
DELTA 2 (1kWh) - 1.3 hr; DELTA 2 Max (2kWh) - 2.6 hr; DELTA Pro (3.6kWh) - 4.8 hr; DELTA Max 2000 - 2.6 hr; DELTA Max 1600 - 2.1 hr; DELTA 2 Extra Battery - 1.3 hr; DELTA 2 Max Extra Battery - 2.6 hr.
The charging power is significantly increased. The charging power of a cigarette lighter is about 100W, whereas the alternator charger can support charging continuously at a high power of 800W during driving for portable power stations, which is 8 times the power of a cigarette lighter.
Please first connect the EcoFlow WAVE 2 add-on battery to EcoFlow WAVE 2, and then upgrade the firmware to the latest version through the app.
The alternator charger operates with an input voltage of 11V-35V, so in theory, any vehicle with a starter battery operating on a 12V or 24V voltage can use this product.
Reverse polarity protection/overcurrent protection/short circuit protection/overvoltage and undervoltage protection.
1. Charging mode: Strictly speaking, it is the car's alternator charging the battery of the portable power station, with the car's battery acting as a load to conduct the current. 2. Reverse charging mode: The portable power station charges the vehicle starter battery or the RV house battery reversely at a rapid rate, with a relatively high current. 3. Battery maintenance mode: Similarly, the portable power station charges the battery, but with a smaller current.
Green light: Charging mode; Blue light: Battery maintenance mode; White light: Reverse charging mode; Yellow light: Unbinding success indicator; Red light: Device failure indicator.
The alternator charger operates based on voltage recognition, and it can charge when the input voltage is greater than 13V.
Based on the principle of the alternator charger, gasoline vehicles are the most suitable for use, while hybrid and range-extended vehicles can also be adapted. The specific operating power depends on the surplus power of the vehicle's alternator, so the charging power may fluctuate. Additionally, some older or special models may not work properly due to overall low voltage.
242x194x35 mm
Charging mode: 11V-35V, 76A Max Battery maintenance mode: 40V-60V, 3A Max Reverse charging mode: 40V-60V, 21A Max
Charging mode: 40V-60V, 800W Max Battery maintenance mode: 13.8V/27.6V, 100W Max Reverse charging mode: 13.8V/27.6V, 800W Max
Operating temperature: –20°C to 60°C Storage temperature: –30°C to 70°C
Please confirm with your vehicle manufacturer regarding vehicle warranty issues
EcoFlow 500W Alternator Charger Specifications |
|
|---|---|
| Model | EF-MS-H02-1 |
| Net Weight | Approx. 3.53 lbs | 1.6 kg |
| Dimensions (W × D × H) | 9.5 × 7.6 × 1.4 in | 242 × 194 × 35 mm |
| Wi-Fi | Frequency: 2412–2472 MHz Max Output Power: 18.22 dBm |
| Bluetooth | Frequency: 2402–2480 MHz Max Output Power: 7.89 dBm |
| Charging Mode | Input: 12V/24V⎓ (11–31V⎓), 45A Max Output: 40–60V⎓, 500W Max; 24V⎓, 360W Max |
| Battery Maintenance Mode | Input: 40–60V⎓, 3A Max Output: 13.8V / 27.6V⎓, 100W Max |
| Reverse Charging Mode | Input: 40–60V⎓, 13.2A Max Output: 13.8V / 27.6V⎓, 500W Max |
| Fuse Rated Current | 125A |
| Protection Type | Reverse polarity protection Overcurrent protection Short circuit protection Overvoltage & undervoltage protection (with integral overload protection) |
| Operating Temperature | –4℉ to 140℉ | –20℃ to 60℃ |
| Storage Temperature | –22℉ to 158℉ | –30℃ to 70℃ |
| Operating Humidity | ≤95% |
| Storage Humidity | ≤95% |
EcoFlow 800W Alternator Charger Specifications |
|
|---|---|
| Model | EF-FC-301-1 |
|
Net Weight |
5.1 lb | 2.3 kg |
| Dimensions (W × D × H) | 9.5 × 7.6 × 1.4 in | 242 × 194 × 35 mm |
| Wi-Fi |
|
| Bluetooth |
|
| Charging Mode |
|
| Battery Maintenance Mode |
|
| Reverse Charging Mode |
|
| Fuse's Rated Current | 125A |
| Protection Type |
|
| Operating Temperature | –4℉ to 140℉ | –20℃ to 60℃ |
| Storage Temperature | –22℉ to 158℉ | –30℃ to 70℃ |
| Storage Humidity | ≤95% |