Compare 400W solar panel blankets for caravan, 4WD, camping and portable off-grid battery charging. This collection brings together soft folding blankets and compact portable 400W options so you can compare pack size, weight, controller requirements and kit inclusions in one place.
Is a 400W Solar Blanket Right for Your Setup?
A 400W blanket suits customers who want higher charging potential from a portable panel while retaining the ability to pack the system away. It may suit longer camps, larger battery banks or higher daily energy use, provided the controller, cabling, connectors and battery system are correctly matched.
The 400W rating is measured under standard test conditions. Actual output varies with sunlight, temperature, panel angle, shade, cable losses and the state of the battery.
Compare Before You Buy
-
Electrical limits: compare maximum-power voltage and current, open-circuit voltage (Voc) and short-circuit current (Isc).
-
Controller: check whether a regulator is included and confirm its PV-input, battery-voltage and output-current limits.
-
Battery chemistry: verify the charge profile supports lithium LiFePO4, AGM, gel or your specific battery type.
-
Portable power stations: confirm voltage, current, connector and polarity are within the manufacturer's solar-input limits.
-
Storage: compare folded dimensions and weight with the space available in your caravan, 4WD or camper.
-
Inclusions: check for support legs, extension leads, Anderson plugs, battery clips and carry storage.
Controller Sizing for a 400W Blanket
Do not size a controller from the 400W label alone. Use the exact product Voc and Isc, allow appropriate design margin, and check the controller's permitted solar-array wattage and expected battery-side charge current at your battery voltage. If you are unsure, seek advice from a suitably qualified installer or auto electrician.
Compare MPPT solar charge controllers, lithium batteries and AGM batteries for a compatible portable charging system.
400W Solar Blanket FAQs
Can a 400W solar blanket charge a 12V battery?
Yes, when connected through a suitable solar regulator and correctly protected cabling. Confirm the regulator supports the panel's voltage and current and has the correct charging profile for the battery.
Is a 400W blanket better than a fixed panel?
It depends on your travel style. A blanket can be moved into sunlight and stored between trips; a fixed panel is always mounted and requires less campsite setup. Some travellers use both.
Can I place a solar blanket on a windscreen or roof rack?
Only follow the instructions for the specific product. Keep the blanket supported, ventilated and protected from sharp edges, traffic, strong wind and avoidable damage.
For more sizes, visit the main solar panel blankets range or explore 4WD solar blankets.
