Winter Storage Guide: How to Store Power Stations and Solar Panels

As the days get shorter and the temperatures drop, you might be thinking about packing away your portable power station and solar panels until spring. But how you store them during winter can make a big difference in their performance and lifespan. Proper winter storage isn't just about keeping them out of the snow—it's about protecting the battery chemistry and the delicate solar cells from the harsh cold.

In this guide, we'll walk you through the essential steps to prepare your power station and solar panels for winter storage. Whether you have a compact unit like the Yeti 1000X or a larger system, these tips will help ensure your gear is ready to go when you need it again.

Why Winter Storage Matters

Lithium-ion batteries, which power most modern power stations, don't like extreme cold. When temperatures drop below freezing, the battery's chemical reactions slow down, which can reduce its capacity and even cause permanent damage if the battery is charged or discharged while too cold. Similarly, solar panels are built to withstand outdoor conditions, but the thermal stress of freezing and thawing, combined with moisture, can lead to micro-cracks and corrosion over time.

By taking a little time to store your gear properly, you'll avoid costly repairs or replacements down the road. Plus, you'll be able to hit the ground running when the sun comes back out.

• Cold can permanently reduce battery capacity
• Moisture and thermal cycling can damage solar panels
• Proper storage extends the life of your equipment

Step-by-Step: Preparing Your Power Station for Winter

First, give your power station a thorough cleaning. Wipe down the exterior with a dry or slightly damp cloth to remove any dust, dirt, or grime that could attract pests or cause corrosion. Pay special attention to the vents and ports—make sure they're free of debris.

Next, charge your power station to about 50-80% capacity. This is the ideal range for long-term storage. A full charge can stress the battery, while a completely drained battery can fall into a deep discharge state, which is irreversible. If your power station has a storage mode (like some Yeti models), enable it to automatically maintain the optimal charge level.

Store the power station in a cool, dry place. The ideal temperature range is between 32°F and 77°F (0°C to 25°C). Avoid leaving it in a garage that might freeze or in a hot attic. A closet or basement that stays at a consistent temperature is perfect.

• Clean the unit and ports before storing
• Charge to 50-80% for optimal battery health
• Store in a cool, dry place with stable temperature

Caring for Your Solar Panels During the Off-Season

Solar panels are more resilient, but they still need attention. Start by cleaning the surface with a soft cloth and mild soapy water to remove any accumulated dirt, bird droppings, or tree sap. Rinse with clean water and let them dry completely before storing. This prevents mineral deposits from baking onto the glass and reduces the risk of mold or mildew.

If your panels are foldable, like the Nomad 20, make sure they are fully dry before folding to avoid trapping moisture. Store them flat or upright, but never lean them against a wall with the glass facing down—this can cause stress on the frame. Keep them indoors in a dry, temperature-controlled space, ideally with the original packaging or a padded cover.

• Clean with mild soap and water, then dry completely
• Foldable panels must be dry before folding
• Store flat or upright in a dry, temperature-controlled area

Accessories and Cables: Don't Forget Them

Your power station is only as good as its accessories. Before storing, disconnect all cables and coils. Check for any frayed wires or damage. If you have a Spade to SAE Cable or a 4X 8mm Combiner to High Power Port Connector, inspect the connectors for corrosion and clean them if necessary.

Store cables loosely coiled, not tightly wrapped, to avoid kinks and internal wire damage. Label them if you have multiple cables to make setup easier in the spring. Also, consider removing any detachable batteries (if your system has them) and storing them separately at partial charge.

• Disconnect and inspect all cables
• Clean connectors to prevent corrosion
• Coil cables loosely to avoid damage

Common Mistakes to Avoid

One common mistake is leaving your power station plugged in all winter. This can overcharge the battery and reduce its lifespan. Another is storing solar panels outside without protection, thinking they're 'weatherproof.' While they can handle rain, prolonged exposure to snow and ice can cause damage.

Also, avoid storing your gear in a place where it might be bumped or knocked over. A power station that falls could have internal damage even if the case looks fine. And never store batteries near flammable materials—while rare, lithium-ion batteries can pose a fire risk if damaged.

• Don't leave the power station plugged in all winter
• Avoid outdoor storage for solar panels
• Protect from physical impact and keep away from flammables

With these tips, you can confidently store your power station and solar panels during winter, knowing they'll be in top shape when you need them again. Proper care now saves you time and money later. If you're looking for accessories to help with storage, check out the Boulder Solar Tripod to keep your panels off the ground and organized.