Solar Battery Storage: The Best Solar Batteries 
Solar battery storage technology allows you to use more of the free energy produced by the solar panels to save money and increase independence from the National Grid.
这best solar batteries
这list of the best solar batteries is growing all of the time. With the Tesla Powerwall, Powervault and Sonnen solar batteries often coming out on top as the best solar batteries.
技术:All of the solar batteries featured in this article are Lithium-ion based, this is the more progressive technology and the same battery technology you’ll find in your laptops, mobile phones and electric vehicles. There is still a strong and well established market for lead-acid batteries (the kind you’d find in your car) and they are still popular with many solar power users who live off grid. Lead acid batteries are tried and tested technology that dates back over 100 years and they are cheaper in terms of upfront cost. However, Lithium-ion batteries have a lower life-time cost and operate at a much higher efficiency level.
这table below compares the key specifications of the best solar batteries available in the UK.
|供应商||Capacity||技术||Cycles Warrantied||Warranty||Weight||工作温度||Dimensions (HxWxD)||安装||PowerCut备份**||Cost*|
|Tesla PowerWall 2.0.||13.5 kWh||锂离子||n/a||10 years||114kg||-20°C to 50°C||1,150 x 753 x 114mm||地板或壁挂（室内或室外）||Yes||£7,900+|
|LG Chem Resu||3.3 – 13.1kWh||锂离子||6,000||10 years||31 - 98.5KG.||-10°C至45°C||452 x 403 x 120mm到744 x 907 x 206mm||地板或壁挂（室内或室外）||不||2,628英镑+|
|Sonnen Batterie Eco||2 - 16 kWh||锂离子||10,000||10 years||71 – 273kg||5°C to 40°C||702 x 641 x 221mm到1839 x 641 x 221mm||地面/Wall||Yes||4,500英镑+|
|Powervault 3||4 - 20千瓦时||Lithium-polymer||>6,000||10 years||129 - 329公斤||0°C至35°C||97 x 100 x 25 to 212 x 100 x 25||地板或墙面安装||不||£4,740 – £14,820|
|Enphase||1.2 kWh||锂离子||7,300||10 years||25 kg||-20°C to 45°C||325 x 390 x 220mm||墙-mounted indoors||不||£1,700+|
|三星SDI.||3.24 kWh||锂离子||6,000||5年||95kg.||-10°C to 40°C||1,000 x 267 x 680mm||地面||Yes||£3,500+|
|Moixa Smart Battery||2-3 kwh.||Lithium Ion Phosphate – LiFePO4||10,000||10 years *Lifetime with GridShare||39.7 – 48.7kg||-5°C to 40°C||505 x 345 x 245mm||墙||不||£2,950 – £3,450|
|xStorage by Nissan||3.6 – 10.08 kWh||锂离子||n/a||从系统5年4.2千瓦时,10years for 6kWh system||135kg||0°C to 30°C||1,230 x 890 x 220mm||墙||不||3,000英镑|
|BYD B-BOX||2.5 - 10千瓦时||Lithium Iron-Phosphate||6,000||5年||88 - 202kg.||-20°C to 55°C||1,000×600×600mm||地面||不||£1,700+|
|Solax Battery||3.3 – 6.5kWh||锂离子||3,000||10 Years||26 - 44kg.||n/a||330 x 450 x 110mm||墙||Yes||1,920英镑+|
|Varta脉搏||3.3 – 6.5kWh||Lithium-Ion||4,000||10 Years||45 - 65kg.||5°C to 30°C||600 x 690 x 190mm||墙||不||3,579英镑+|
|Puredrive PureStorage AC电池||5 - 10千瓦时||LiFePO4 Lithium ion Phosphate||10,000||10 Years||75 – 119kg||-20°C to 60°C||550/850 x 1,460 x 165mm||地面/Wall||Yes||£3,157+|
|Puredrive PureStorage DC Hybrid||5kWh (Modular up to 25 kWh)||LiFePO4 Lithium ion Phosphate||10,000||10 Years||57kg.||-10°C至60°C||386.40 x 737 x 171.80mm||墙/ Floor||Yes||£1,555|
|*Prices are estimates only and do not include installation costs which can range from £500 to over £2,000. **powercut back-up may be an optional extra and not be included as standard|
- Energy bill savings:By storing energy during times of lower demand you can reduce the amount you need to buy from your energy supplier when energy usage is higher, saving you money on your energy bills.
- Backup Power Supply:一些太阳能b0b体育平台咋样电池将使您能够在有电源切割时使用您的太阳能电力，因此您尚未留下电源或照明。当一个电源切口击中这种能量的商店可能对您的家庭非常宝贵。
When there is a drop in voltage on the grid, solar batteries detect this and will automatically turn off the inverter and disconnect your battery from the grid as a safety precaution; engineers will be working on electricity lines on the grid and if batteries are connected to it there is a risk of electrocution. This is called islanding and is essentially a safety barrier between your incoming supply and your fuse board.
如果备用电源很重要，您需要查看交流耦合系统。在撰写本文时，我们只能在英国找到3个电池系统，在电源切割期间将保持灯光。这Tesla PowerWall 2.0.使用备份网关。此更新版本的PowerWALL 2.0提供了一个单独的单元，看起来像电池本身的较小版本，并在断电时完全岛屿。第二个和更便宜的选择是Puredrive的预测电池系统。最后，三星SDI还可以在停机期间提供紧急权力。随着电源备用可能不适合标准，始终将制造商联系。
Find out more about这里的太阳能备用电池和电源削减。
How much do the best solar batteries cost?
这table below details all you need to know to make a fair comparison but, as price is a major factor in any purchase, we’ve extracted the prices out for quick reference and categorised them as either a full energy storage system (includes an inverter) or a battery on its own that requires a separate inverter if you want to connect it to a solar pv system.
|Full Energy Storage Systems (Solar Battery & Inverter)|
|Tesla PowerWall 2.0.with Backup Gateway 2||£7,900+|
|Puredrive Energy Storage System||3,492英镑+|
|Sonnen Batterie Hybrid.||4,500英镑+|
|Powervault 3||£4,740 – £14,820|
|Moixa Smart Battery||£2,950 +|
|Solar Battery Only (will require an inverter to connect to solar panels)|
|LG Chem Resu||2,628英镑|
|Sonnen Batterie Eco||4,500英镑+|
|Solax Triple Power||1,920英镑+|
得到Free Solar Battery Quotes:获取报价并比较价格。
Whatever you don’t use is sent back to the National Grid to be redistributed around the country. This means that you can only use solar energy as and when it is available, i.e. when the sun is shining. However, this is not the case if you install a solar battery…
By introducing a solar battery into the process you can keep hold of the surplus energy you’ve produced for use at another time (e.g. at night) and further reduce your reliance on the National Grid.
- Solar panels that absorb and convert the sun’s energy to DC electricity.
- A battery (or batteries) to store the electricity that is not used for use when the solar panels aren’t generating electricity.
- An inverter that converts DC electricity to AC ready for use in your lights, appliances etc.
As solar technology continues to progress many modern systems also incorporate smart technology such as apps and Wifi so you can easily monitor the battery’s charge level and general efficiency.
AC or DC?
In addition to choosing the right voltage, you will need to consider if AC or DC is the best choice for your system. The main difference is in the way the battery connects – or doesn’t connect – to your solar panels.
AC:AC（交流电流）电池没有直接连接到太阳能电池板，但通过电表连接。这意味着改装对现有面板更容易，因此如果您已经在适当的太阳能电池板，这可能是您的最佳解决方案。您需要一个额外的逆变器将直流电力转换为AC，以便在您家中使用，然后返回DC以存储在电池中。PowerVault 3是交流耦合系统的示例，而Tesla的PowerWALL 2.0是DC耦合系统的示例。
得到Free Solar Battery Quotes:获取报价并比较价格。
A solar battery is not a simple ‘install and leave’ unit. It needs regular monitoring and maintenance to keep it working both efficiently and safely. This includes keeping it charged at an optimum level, carrying out regular power ‘boosts’ and gassing as well as ensuring it is stored at a correct temperature and protected from the weather.
It’s not a complete energy solution (yet)
这ultimate ambition for many is to make complete energy self-sufficiency a reality, without any reliance on the National Grid at all. While technology is certainly moving in the right direction and has made great strides in recent years, a solar battery system is still not a viable option to completely disconnect from the mains supply. Batteries have their faults, shelf-lives and limitations, so until things have progressed it’s necessary to have the option of a backup supply from the National Grid.
不。If you live in an area affected by regular power cuts then a home battery could be just the system you need to keep the lights on. On average you’ll probably get around 24 hours of backup power but this can be increased by simply installing more batteries. If you’re on an Economy 7 rate a home battery can also save you money by charging when electricity is at it’s cheapest for you to use when it’s not so cheap. Finally, you can even make money by storing energy for the National Grid who can discharge it from you in times of need.
Yes and no. Some batteries will only work when installing a new system or one that was specifically designed for it (特斯拉PowerWall 2.）一些系统会对任何系统改造。
Are solar batteries safe?
这y are as safe as as any other electrical item in your home. Generally installing a solar battery is not a DIY job and for the most part the public can’t buy solar batteries direct from the manufacturer but rather via an approved installer.
This is the ‘usable’ amount of energy in kWh (units) that the battery will store. It’s never a good idea to run a battery down to empty as it will cause damage, so when you are comparing capacities remember to check if the figure given is ‘total’ or ‘usable’.
How do I know which power output will suit my property?
这power output of a solar battery is, quite simply, how much power the battery can deliver at one time. The more electrical appliances and lights etc. that you plan to power with the battery, the higher this will need to be.
What happened to the Feed-in Tariff?
这Feed-in Tariff (FiT) scheme has now closed. Back in 2010, the government introduced the Feed-in Tariff scheme which paid owners of eligible PV systems for every kWh of energy they generated and each kWh of unused energy which was exported to the National Grid. Although this scheme was a great incentive for homeowners to install solar panels, it also prevented some homeowners from installing a solar battery as they feared they would receive lower payments if they did not send their surplus energy to the grid.
这FiT scheme closed to new applications in March 2019, so if you are yet to install solar PV you won’t be paid for sending your surplus energy to the National Grid and will save much more money by keeping hold of it.
得到Free Solar Battery Quotes:获取报价并比较价格。