Solar batteries are a smart investment for energy storage. Without abattery bank, you won’t be able to store energy generated by your system for later use. If you’re tied to the grid, no battery means no backup power when the utility grid suffers an outage. If you live off-grid, your system simply won’t work at all.
Batteries are crucial to keeping your system running.
Choosing the best battery for your solar panels involves many factors in your decision, including the battery’s capacity, power, efficiency, and costs depending on your needs. To help you make the right choice, let’s review how solar batteries work, the different types of batteries available, and our recommendations for the best batteries for solar in 2020.
太阳能电池如何工作？
在安装太阳能电池板系统的一部分时，您可以存储多余的太阳能，而不是将其发送回电网。如果您的面板产生的电力超过您所需的电力，那么这种能量可以恢复为电池充电。
当您的太阳能电池板没伟德betvictor手机版有发电时，您可以在需要时从存储的能源中抽出。仅当电池装满或仅在电池低时才从网格中绘制，电力才会回到网格中。
What Are the Different Types Of Batteries?
用于储能的电池通常由铅酸或锂苹果手机怎么下载伟德离子制成。在为您的太阳系选择最佳电池时，重要的是要了解what is a deep cycle battery与洪水泛滥，密封的铅酸和锂电池泛滥，然后进行选择。这是两者之间的一些区别lead-acid vs. lithium-ion电池。
Flooded Lead-Acid Batteries
在过去的150年中，使用了洪水酸（FLA）电池，是最常用的电池之一off-grid solarsetups. These batteries are inexpensive, 99% recyclable, and easy to get rid of at the end of their lifespan.
如果您正在寻找负担得起的选择，则这些是太阳能的最佳电池，但是进行以下动手监控：
- 被洪水泛酸电池旨在处理每日电荷循环。They do emit gas as a byproduct, so they must be ventilated correctly.
- FLA电池非常适合喜欢与系统动手的人。They’re the most affordable option but require occasional upkeep to work properly.
- These batteries need regularmaintenance.The plates of every cell in the battery must be submerged in water to function properly (which is why they are called “flooded” batteries). You’ll need to add water every 1 to 3 months to keep the plates submerged. It’s smart to check on them once a month.
Sealed Lead-Acid Batteries
如果你不能进行常规体格检查,the best battery for your solar panels is the sealed lead-acid battery with these advantages:
- These batteries are spill-proof and non-hazardous.有两种类型的密封铅酸电池具有相当相似的特征：AGM（吸收性玻璃垫）和凝胶。
- Sealed batteries are a self-contained system.They don’t need to be refilled with water, like flooded batteries. For that reason, they work well at properties that aren’t occupied full-time, like an off-grid vacation cabin you visit once or twice a year.
- Sealed batteries are better at handling temperatures.They won’t self-discharge as fast if they sit idle for extended periods while you’re away.
Lithium Batteries
锂电池是一项在1970年代投放市场的新技术。它们在笔记本电脑和手机中很常见，但最近它们在可再生能源空间中变得越来越流行。锂电池更昂贵，但是有几个好处可以证明更高的价格：
- Longer lifespan
- 没有维护
- More efficient power usage
- 更可用的存储容量（更深的放电）
- 没有瓦解/通风
How Do I Compare Solar Batteries
As you consider your solar battery options, you’ll want to compare each type of battery based on the capacity, depth of discharge (DoD), round trip efficiency, and battery life to find the best batteries for solar depending on your system’s requirements. Make sure to check the following:
- 容量：Capacity is the total amount of electricity that a solar battery can store. This power is measured in kilowatt-hours (kWh).
- Depth of discharge (DoD):The depth of discharge (DoD) indicates the amount of battery capacity that’s used. The higher the DoD, the more usage you’ll get from the battery’s capacity. Your depth of discharge should generally be at least 40% or higher.
- Round-trip efficiency:Round-trip efficiency is the difference between the amount of energy used to charge it and the available amount of energy. A higher round-trip efficiency is generally more economical. You should look for a round-trip efficiency around 80%.
- Battery life & warranty:Since battery performance declines over time, a warranty guarantees good performance for years or cycles as well as ensuring the battery maintains a certain capacity.
What Are the Best Batteries For Solar Systems in 2020
So what are the best batteries for a solar system on the market? Here’s a list of our recommendations for the best batteries for solar in 2020:
- 最佳房屋的总体离网电池：伟德足球指数投注发现48V锂
- Best value off-grid battery for homes:Crown CR430 FLA
- Best off-grid battery for vacation homes:Fullriver DC400-6 AGM
- Best battery backup for grid-tie systems:Fullriver DC400-6 AGM
- Best battery for energy resale:发现48V锂
- Best battery for RV/mobile systems:Crown 6CRV220 SLA
How Do I Choose the Best Batteries For Solar?
你怎么决定what batteries are right for you? Picking the right battery depends on many factors like application, budget, and expectations for upkeep (like regular maintenance and replacement interval). Your living situation will determine the smartest battery choice for your project. Here’s our breakdown of the best batteries to meet your solar needs:
最佳总体离网电池伟德足球指数投注
如果您全职居住在一个离网家庭中，则需伟德足球指数投注要一个可以每天跟上电源需求的电池。
Our recommendation for the best overall off-grid battery for homes is the发现48V锂电池. This is the best battery if you’re looking for a long lifespan and affordable flexibility to expand your system down the road. Reasons to choose this battery include:
- Lithium batteries are a premium storage option.They have a longer lifespan and charge faster than other battery types. And because they can handle deeper discharges, you need less overall capacity than you would with a comparable lead-acid battery bank.
- They also make it easier to expand your system over time.Let’s say you add a new well pump to your property down the line. With lead-acid batteries, it can be difficult, or even impossible, to expand your battery bank, depending on the age and how they are wired. That’s not the case with lithium batteries. More batteries can be added over time because each battery operates independently with its own internal Battery Management System (BMS).
- 锂电池可以处理长时间的时间，而无需充电。这种情况实际上会损坏铅酸电池，因为它们需要每天充电，并且几天后会损坏，而无需充分充电。
Best Value Off-Grid Battery For Homes
寻找更具成本效益的选择？离网系统的最佳价值电池是伟德足球指数投注Crown CR430 flooded lead-acid battery. Choose this option if:
- 您过着离网的生活方式。伟德足球指数投注If you’re more comfortable with hands-on DIY projects and don’t mind doing the occasional tune-up on your battery bank, the CR430 is an excellent option.
- You want capacity and reliability at a great price.430小时容量不能被打败的value. The Crown is a reliable American manufacturer (they show up on this list four times for a reason). CR430s are built in Fremont, Ohio, at Crown’s advanced manufacturing plant.
Best Off-Grid Battery For Vacation Homes
What if you have an off-grid vacation home that you don’t visit regularly? You want a battery that doesn’t require regular maintenance since you’ll only be on-site a few times a year.
In these cases, a sealed AGM battery is the best option. Our recommendation is the 415AhFullRiver DC400-6:
- 较低的容量很好，因为您不需要全年存储。我们还跳过了高级锂选项，因为对于每年只使用几次系统的系统来说，这是过度的。
- 这些电池相对便宜。您不必对您不会花那么多时间的房地产进行大量投资。
The Best Battery for Grid-Tied Backup
If you have a grid-tied system with battery backup for emergencies, you won’t need a battery with tremendous storage power. For that reason, we recommend the same battery as above: theFullRiver DC400-6用密封的AGM：
- You use the battery only when you need it.该电池只有在电源熄灭时才能看到使用，希望每年不会发生一次。
- The grid-tied battery requires low maintenance.You want a battery that doesn’t require maintenance—it should simply work in the rare cases you need it.
Best Battery For Storing & Selling Energy
In certain areas, the utility company charges more during peak use time (around 4 to 9 pm), when people get home from school and work.
You’ll want to be able to store energy generated during the day and sell it back in the evening, when rates hit their peak.
For this type of use, we recommend the发现AES 7.4KWHor theSimpliPhi 3.5 kWhas best batteries for your solar needs:
- 储能使您苹果手机怎么下载伟德可以存储白天的能源。您可以将其出售给公用事业公司以获利。
- 两者都是48V锂电池的寿命更长。We recommend lithium here because the battery will be cycled more heavily than in a vacation home or battery backup application. The lithium option can be just as cost-effective as lead-acid batteries in terms of cost-per-cycle over the life of the battery.
These batteries protect you from future changes in your utility rates and is a must if you live in an area with time-of-use rates (TOU), high demand charges, or no净计量.
The Best Batteries For RV, Marine, Remote Industrial & Small Off-Grid Use
What if you need to power a smaller application, like an RV, boat, or small outbuilding on your property?
If you’re looking for a compact battery with modest capacity, choose from the following options:
- Crown 6CRV220: For light-use cases, the 6CRV220 sealed AGM battery is a good choice. Originally designed to power golf carts, this battery has a very low profile but can still withstand deep cycling over a long lifespan. We recommend this battery for tiny homes, boats, and RVs—any application where space is at a premium, and you just need to power the essentials.
- Crown 12CRV110: This is our pick for remote industrial applications. It can power small-scale industrial equipment in remote areas not accessible by power lines. Common applications include lighting, pumps, traffic signs, and monitoring equipment.
Solar Battery Solutions
No matter what kind of off-grid system you’re looking for, your battery bank is a key component. Visit our电池购买指南orbattery maintenance tipsto learn more, or check out ourbattery banksto find a pre-packaged solution.
Need help designing your solar system or choosing the best batteries for solar?与我们联系以免费咨询or give us a call at 1-800-472-1142.
