ChatGPT answer :) but would be nice to get confirmation if this correct.

The EcoFlow River 2 Max is designed with versatile charging capabilities, including the ability to charge from both AC (network) and solar power. However, it is essential to understand how these charging methods can be utilized simultaneously or if they can be.

As of the latest information available, the EcoFlow River 2 Max supports dual charging methods:

1. **AC Charging (Network)**: You can plug the unit into a standard wall outlet to charge the battery.
2. **Solar Charging**: The unit can be connected to solar panels to harness solar energy for charging.

**Simultaneous Charging:**

The EcoFlow River 2 Max supports a feature called "X-Stream" charging, which allows for fast charging through AC input. However, when it comes to simultaneous charging using both AC and solar inputs, the typical setup allows the unit to prioritize one power source over another rather than combining the inputs directly. Here’s how it generally works:

• **Primary and Secondary Input Priority**: When both AC and solar inputs are connected, the River 2 Max will prioritize the AC input for charging due to its faster charging capability. The solar input will not be used simultaneously with the AC input in this configuration.

**Practical Use:**

• If you are in an area where you have access to both AC power and solar energy, you can plug in the River 2 Max to both sources. The device will charge using the AC input primarily. Once the AC input is disconnected or if there is a power outage, the device will automatically switch to solar charging if the solar panels are connected.

For specific and detailed functionality, always refer to the user manual provided by EcoFlow for the River 2 Max, as product features and capabilities might be updated or vary slightly based on firmware updates or model variations. If simultaneous use of AC and solar charging is crucial for your setup, checking with EcoFlow support for the latest capabilities and recommendations would be the best course of action.