Winter seasons can be tricky if you depend on solar for all your energy needs. There’s little to no sunshine to generate enough solar energy to power your devices and light your home.
Investing in a good solar battery, thus, makes more sense if you’re looking for surplus energy to power your systems on these cloudy and snowy days.
An excellent solar battery gives you energy independence, enabling you to live off the grid even with a small solar system. And while it’s true that cold prevents your battery from overheating, too much cold can cause problems with your solar energy supply during winter.
Below is what you need to know about winter solar batteries, including choosing the best solar battery, caring for your solar battery during winter, and ways to improve solar panel performance during winter.
Choosing The Best Solar Battery
A good solar battery should match your needs. That’s why no one size fits it all in choosing a battery. Every household has its unique energy needs.
Here are important considerations when choosing a solar battery for your household.
Capacity
Battery capacity is measured in kWh. It measures how much power the battery will store over a specific duration of time when fully charged.
Thus, knowing how much energy you use in your home is essential to help you decide on a suitable capacity. Always choose more if unsure of your home energy requirements.
Peak Power Output
The higher the energy your battery can push at a given time under normal performance, the better. Ensure the battery’s peak power can start and support the smooth running of everything within your home in one-off peak output.
Battery Lifespan
Choose a battery you will charge and discharge for longer while maintaining peak performance. How best can it resist cold or hot cycles to deliver peak performance?
Most manufacturers will always indicate the lifespan in the warranty. For instance, the warranty may show a 5,000-cycle warranty, equivalent to five years.
Ambient Working Temperature
Check the optimum temperature at which the battery will work normally. Your ideal solar battery for winter should perform at its peak when installed in a room with the lowest temperature possible.
Check the self-discharge rate to ensure the battery doesn’t drain so fast when temperatures are too low.
How to Care for Your Solar Battery During Winter
Winter is the worst season for solar battery lovers. Low power generation puts your batteries at a significant risk of freezing.
And while you can do nothing about the low-intensity sunlight, there are steps you can take to care for your battery and keep the system running at its peak.
Here are practical tips for caring for your solar battery during winter.
Add Insulation
Place your battery on top of a wooden pallet or similar material that doesn’t transmit cold from the ground easily. Stuff some styrofoam or any insulative material beneath the pallets to add warmth and prevent cold transmission to the battery.
Proper insulation minimises temperature fluctuations, thus ensuring even power output throughout the seasons.
Inspect the Battery Pack
Some solar batteries will overcharge or fail to reach their full potential when left in the power pack for too long.
As you inspect the solar system, check for contaminants, rust, or grime in the connections and clean them off. Apply copper grease in the connections to prevent them from becoming too wet.
Schedule your battery inspection after a certain period as recommended by the manufacturer. Do this after a more extended period of no use.
Create a Battery Shelter
Your batteries are most delicate during the winter. Besides the standard protection by the manufacturer against external elements, additional shelter can prolong your battery’s life cycle and enhance its performance during winter or a snowy season.
Invest in a Thermometer and a Trickle Charger
Once in a while, your batteries will self-discharge during winter. This can significantly reduce lifespan as the battery may never charge fully again. Connect your battery to a full battery or use the trickle charge whenever the voltage drops below 12 volts DC.
Consult With an Expert
Caring for a solar battery during winter can be overwhelming if you’re unsure what to do. Do not assume anything. Instead, seek an expert’s advice on the best power generation and storage practices in cold seasons to avoid damaging your battery.
How to Boost Your Solar Panel Winter Performance
Solar panel systems tend to underperform during winter. Maintaining an adequate energy supply during this time can be challenging, especially if you do not have the correct information for taking care of your solar panel during winter.
Here are helpful tips to boost your solar panel performance in the colder months.
- Thoroughly clean the panel before the snow starts.
- Always put your charge controller in low power and low-performance mode to block reverse current and prevent the battery from overcharging.
- Install the panel at a steeper angle to encourage shedding off of snow build-up.
- Install the panel in an open space free from shades that may block the limited sunshine.
What’s the Best Battery for Storing Solar Energy?
Most batteries for home energy storage use lithium iron, saltwater, or lithium acid. However, experts recommend lithium solar batteries to store solar energy, especially during winter.
Lithium batteries are lightweight, low maintenance, scalable, and with low self-discharge, making them excellent for cold seasons. They also charge faster and do not require maintenance.
Install your lithium-ion battery inside a warm room to protect them from freezing. Always aim for a temperature of between 60 and 80 degrees Fahrenheit. Consider adding extra insulation for the battery.
Conclusion
There are four main types of solar batteries. All work differently depending on the application. Choosing the best solar battery for winter will not be a challenge if you know how each one performs.
And since batteries can discharge at a higher rate during cold climates, experts recommend using lithium iron batteries due to their slow self-discharging quality compared to other types.
Avoid charging your lithium-ion battery if it freezes, as doing so may potentially damage it or shorten its lifespan.
