Portable solar cell VTOMAN VS400 400W

VTOMAN VS400 is a foldable solar panel with a maximum output of 400W and a conversion efficiency of 25%. It uses Topcorn cells and supports MC-4, Anderson, XT60, XT90 and DC5521 connectors, allowing it to work with VTOMAN portable power stations and compatible models from other brands. The design meets IP67 waterproof standards, and the foldable design, handles, adjustable brackets and metal holes allow for easy transport and quick preparation of the panel for use.

High efficiency and 400 W power

The used Topcorn cells provide a conversion efficiency of 25%, which allows for efficient use of solar energy. The panel offers a maximum power of 400 W, an operating voltage of 43 V and an operating current of 9.3 A. The open circuit voltage is 50.2 V, and the short circuit current reaches 9.8 A.

Wide device compatibility

The included 4-in-1 adapter cable allows the use of XT60, XT90, Anderson and DC5521 connectors. Thanks to this, the VS400 can work with VTOMAN portable power stations and compatible devices from other brands. The board can also be used with sealed lead-acid batteries, gel batteries and open lead-acid batteries.

Quick setup at any location

Adjustable feet allow you to quickly place the board on the ground and adjust its position to the current conditions. Metal eyelets also allow you to hang the board, for example on a balcony or camper. This allows you to easily adapt the installation method to the location and available space.

Foldable design allows for easy transport

When unfolded, the board measures 2443 × 970 × 4 mm, and when folded, it measures 656 × 970 × 50 mm. Built-in handles make it easy to carry, and a bag on the back allows you to store the cables along with the board. This design is ideal for travel, camping, and other applications where there is no constant access to a power outlet.

IP67 protection for outdoor use

The VTOMAN VS400 meets IP67 protection requirements, increasing its durability during outdoor use. The net weight is 37.5 lb, and the combination of a foldable design, brackets, handles and metal eyelets allows for easy handling of the board despite its large work surface. An additional convenience is the ability to store cables in a dedicated bag, allowing for organized and easy access to essential accessories.

Included in the kit

Solar panel VTOMAN VS400 x1

4-in-1 adapter cable MC4 to XT60 / XT90 / Anderson / DC5521 x1

User manual x1

Warranty: months

The text is machine translated.

It is important to know

Before purchasing a VTOMAN VS400 400W portable solar panel, it makes sense to take a moment to consider what needs you really want to cover and how this panel will be part of your energy system. The characteristics of portable solar panels often reveal their practical advantages or obstacles only during actual installation and use. Before making a choice, pay special attention to the following:

• The flexibility of the portable design allows for use in different locations, but it also requires careful planning of connection to a storage system or inverter for efficient conversion of energy into a usable form.
• The 400 W power is enough for basic charging of smaller devices or supporting occasional use in a weekend or mobile setup, but it does not cover the needs of a household with larger permanent consumers.
• Before first use, check the compatibility of the connections with your existing system or portable batteries, as improper connection may limit the efficiency of the panels or result in the need for additional inverters.
• When used to supplement an existing system, it is important to know the technical requirements regarding voltage, current and connection, as an inadequate connection limits the possibilities of upgrading or utilization.

Source of editorial recommendations: general verifiable guidelines for product selection.

In practice

🟢 Basic electricity production for a small facility or weekend

The 400 W panel is well suited for seasonal or temporary powering of smaller devices, especially where quick and easy setup and portability are key.

🟡 Upgrading an existing solar system

It can be useful as an additional source of generated energy, but the compatibility of connections and parameters must be carefully checked to avoid technical limitations.

🟡 Charging an electric vehicle

The possibility exists, but due to the limited power of the panels, charging an electric vehicle is significantly slower and more suitable for emergency or supplementary needs than the sole supply of an EV.

🟢 Standalone system for mobile use (camping, traveling)

The panel is very suitable for mobile setups or travelers who want electricity anywhere without a permanent fixed installation.

Answers to frequently asked questions

Can I use this solar panel without additional devices?

For practical use of the energy produced, you will usually need an energy storage device (battery) or an inverter to power the panel for home or other devices.

Is the panel suitable for use in multiple locations?

Yes, the portable design allows for use in a variety of locations, but each setup requires an enabled connection to a compatible system or device.

What does 400 W of power mean in practice?

This means that the panel produces up to 400 W of electrical power under optimal conditions; in reality, the output may be slightly lower due to lighting conditions and orientation.

Can I connect the panel directly to the existing electrical installation?

Usually not; in most cases, an inverter or storage is required to connect to the house wiring or charge devices.

Description updated: October 2026

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