Frequently Asked Questions
- Elecyr Battery 7500 (7500 Wh capacity)
- 1500 watt inverter/charger
- 1500 watt flexible, adhesive solar panels
- Internal Battery Management System
- Connection to external devices through Bluetooth BLE
- MC4 cables
- AC charging port
- Electric outlets for powering appliances
- Port to connect to additional Elecyr batteries
The Daily Sun requires very little installation work. The solar panels included with the kit can be installed on a roof by peeling away the adhesive backing or simply laid out on the ground if you’re on the go. Since the panels are pre-wired, simply connect the cables to the MC4 port on the Daily Sun to begin charging.
The battery should be kept somewhere inside away from the elements and temperatures that would be uncomfortable to humans. The Daily Sun is rated for temperatures between 0º and 45ºC (32º and 113ºF).
To view what’s going on inside your system, download our app and connect to the Daily Sun through Bluetooth BLE.
Yes, the Daily Sun can be sized to meet any energy requirements. Each Daily Sun can be attached to individual appliances or electric sub-panels and you can easily expand capacity by connecting additional batteries through click-and-lock cables.
The 1500 watt inverter is large enough to power many appliances with high efficiency, but if you want to power large appliances like clothes dryers or electric stoves then you’ll need a larger inverter. Each Daily Sun in your home can connect to a central inverter through a busbar that can then be connected to the most demanding appliances. Larger inverters are less efficient, so this way you can use energy efficiently for all your small loads but still have the convenience of powering all your appliances with solar power. You’ll need the help of your local solar installer to do this.
As another option, you can skip the kit and purchase battery-only Daily Suns that will work together in a bank and connect to one large inverter to handle all loads. Again, your local solar installer will be able to help you understand how this system would look.
Net-metering means that energy generated by your solar panels is sent back into the grid when you generate more than you need. Your power company credits you for the energy and you spend these credits when you draw from the grid.
But when the grid goes down, your solar panels won’t be able to supply energy to your home. The grid-tied inverter that normally communicates between your panels, home, and the grid automatically shuts off during power outages. It does this to protect utility worker who would risk electrocution if your panels were still pumping power back into the grid.
When you combine energy storage with net-metering, you ensure that you’ll have access to energy at all times since the batteries are linked to a off-grid inverter. When your grid-tied inverter shuts down in a blackout, The Daily Sun will be unaffected. Simply plug in the appliances you need to power.
Even though the The Daily Sun is designed to integrate seamlessly with solar power, it’s not necessary to install panels to make use of energy storage.
If you just want to make sure you have backup power for a critical appliance like a furnace, you can charge the The Daily Sun into the wall outlet and plug the furnace into the The Daily Sun. When the power goes out, your furnace will stay on. While the power is on, the inverter will send power directly from the grid to your furnace without cycling the battery.
Energy storage is also useful in places that have different electric rates at different times of day. A large commercial building will see quick returns on their investment if they charge an Elecyr system during the night when rates are lower then use that battery power to avoid peak rates.
If you live in an area with little sunlight, you can also maximize the efficiency of a diesel generator using Elecyr energy storage. A generator has to be on whether it’s powering a single lightbulb or every appliance and, since you rarely push a generator to the max, it wastes a lot of fuel idling. But an Elecyr system can charge from a generator running at full-throttle which increases its fuel efficiency by as much as 50%. Depending on how much energy you need, those savings will add up quickly.
You can also charge your Daily Sun from wind turbines or hydro power connected to the right inverter/charger, which means you’re free to use whatever source of energy makes the most sense for your environment.
The answer depends on what you want to do with your batteries. Do you want to go off-grid? Reach net-zero energy? Just keep a little backup for emergencies? Elecyr can supply the power for all these needs and more, but knowing your goals is an essential first step towards building an Elecyr storage system.
For smaller backup systems, you can use a single Daily Sun plugged directly into the appliances you want to backup. For large off-grid systems, you should consider purchasing several Daily Suns and dividing their electric loads between multiple sub-panels in your home.
To make these decisions, you’ll need to understand your own pattern of electricity use. You can do this on your own, but if you’re unsure we recommend getting a professional energy audit. You’ll need to know how much electricity in kilowatt-hours (KWh) you use per day, how large your individual loads are in kilowatts (KW), how large the total peak load is in KW, and how much power your solar array will provide.
To help you along your way, Elecyr developed the Solar Cost Calculator. Follow the link to get an estimate of how much energy your home requires and how much a solar plus storage system would cost. If you’re doing renovations or building a home, simply adjust the calculator’s parameters to match.
Elecyr offers the Battery 7500, a battery that comes without the solar panels or internal inverter. This battery-only version can work with any inverter intended to charge and discharge batteries.
We use Lithium Iron Phosphate (LFP) which has a cycle life of 9,000. Cycled daily, this amounts to nearly 25 years.
For the toughest conditions, ask about our premium Lithium Titanate (LTO) chemistry with a cycle life of 30,000. These batteries can cycle daily for over 80 years, which mean’s they’ll outlast your solar panels and maybe even your roof. They’re also resistant to extreme temperatures, so powering a home in sub-zero conditions isn’t an issue.
We selected our battery chemistry not just for their long lives but for their safety as well. The chemistries we use are not the same lithium-ion batteries that have been known to cause fires. In fact, they’re so stable that they have an upper operating limit 60º C (140º F) and therefore require no cooling system even in tropical climates. Simply make sure you store them in a room with enough space for natural convection to take place. This makes them safe to store inside your home with only the same precautions you take for any electronic device.
Any manufactured product comes with an environmental cost, so it’s ideal to buy products that don’t need to be replaced frequently. Lithium can be dangerous if released into the environment, but this is not a concern when it is disposed of correctly.
The alternative to lithium is lead-acid. Lead-acid batteries are recyclable but must be replaced every year or two. There’s no safe way to dispose of lead, so in this case recycling is a necessity. The process of recycling comes with a carbon toll, however. Take the example of water bottles: A durable metal water bottle has a larger carbon footprint than a single plastic bottle, but if you drink a plastic bottle of water every day your using a product that so that’s a footprint that adds up quickly.
Currently, there’s no way to recycle lithium, but that’s mostly because there’s so little lithium in batteries that it’s not worth the cost to extract it. But Elecyr’s batteries allow you to run your home off solar power for decades and, since the majority of power plants still use coal to create electricity, those are decades you won’t be polluting every time you turn on a light.
Other lithium-ion chemistries use sulphates such as nickel or cobalt. During mining, these types of metals create sulphuric acid as a byproduct which pollutes the water, air, and soil. The iron and phosphate in our batteries are abundant resources that do not create dangerous byproducts.
For more information on the minimal environmental risks of our batteries, please download ourMaterials and Safety Data Sheet
You’re not spending extra money with Elecyr. The lower price tag of lead-acid batteries comes with a lower value that ends up costing your more in the long run.
We chose to use Lithium Iron Phosphate (LFP) chemistry despite its higher price because they’re more reliable. Period. Unlike products like the Tesla Powerwall, require no internal cooling system, their self-discharge rate is negligible and due to their extremely long life, they pay for themselves many times over. Lead-acid chemistries such as VRLA, AGM or wet-cell many hidden costs and deficiencies.
Consider this: When Elecyr says the capacity of our batteries is 7500 watt-hours, we mean that you can use 100% of the energy. Our battery management system takes care of the rest. Lead-acid can only be discharged about 50%. That means half the storage you pay for with lead-acid is off-limits. That means you essentially have to buy two lead-acid batteries for every one Elecyr.
It can be difficult to monitor how much charge is left in your battery. The solution is to purchase a charge control system in addition to your batteries. This is another hidden headache of using lead-acid batteries but it’s one you can avoid with Elecyr since ur batteries include the battery management system in the price. Our BMS allows you to monitor your batteries remotely from any tablet, laptop or smartphone so, in the rare event of an issue, you’ll know immediately.
To make batteries work, you also need to buy an inverter that switches DC battery power to AC power that appliances use. When you buy an Elecyr Daily Sun, the inverter comes with the batteries. When considering the cost of lead-acid batteries or the Tesla Powerwall, don’t forget to add all necessary components and installation fees to that price tag before comparing it to Elecyr’s all-inclusive price.
Even with all the necessary parts, premium lead-acid models will only give you about 1200 cycles when discharged to just 50%. The cycle count drops off precipitously when discharged more than 50%. 600 cycles is 15 times fewer than our LFP chemistry which means that, when it’s time to replace your Elecyr system, your neighbors will have had to replace their lead-acid batteries 15 times. And since our batteries hold the capacity of two lead-acids, one Elecyr actually does the job of 30 lead-acid batteries.
With lead-acid, you’re forced to buy a system that’s twice as big, lasts only a fraction of the time, can’t provide the full energy to a home and doesn’t come complete with all the necessary parts.
Tesla has only made select information about their PowerWall public which makes it difficult to compare, but there are a few differences that are immediately obvious.
For one, the name PowerWall is a little misleading. It’s only a battery, yet in order to make that battery work you need other components such as an inverter, mounting hardware, cables and an electronic bus. The Daily Sun not only includes all these components, but they are modular as well so they can be combined in limitless configurations to meet the exact energy needs of your home.
It’s this modular design that also makes the Elecyr Daily Sun far easier to install: Simply plug in solar panels and appliances. The Daily Sun can also be wired directly into electric panels and combined with larger inverters to provide full power to your home on a daily basis. Tesla doesn’t offer you the freedom to install their battery on your own as, weighing in 220lbs, the PowerWall must be installed on a reinforced wall with heavy duty hardware and the help of several others. If you want to expand your Daily Sun, simply order an Elecyr Battery 7500 and connect it using a simple click-and-lock cable. To expand your Powerwall storage, you’ll have to repeat the intensive installation process over and over.
Tesla guarantees a lot less storage than originally advertised for its 7-kilowatt-hour daily cycling battery system. The warranty covers 740 cycles or 85 percent of 6.4 kilowatt-hours (5.4 kilowatt-hours) of capacity for the first two years -- whichever comes first. Then it covers 4.6 kilowatt-hours for three years or 1,087 cycles. And finally, it covers 3.8 kilowatt-hours for five years or 2,368 cycles. That comes out to 39¢ per kilowatt-hour over the lifetime of the battery and nearly 60¢ when you include the cost of a typical inverter.
Elecyr’s batteries can endure 9,000 cycles or 25 years. Cycled daily for 25 years, homeowners will enjoy a for a cost of 9¢ per kWh over the lifetime of The Daily Sun.
But don’t just take our word for it. Take a look at these other reactions to the PowerWall from industry professionals: