The lithium titanate battery (LTO) is a cutting-edge energy storage solution that has garnered significant attention due to its unique properties and advantages over traditional battery technologies. Understanding the intricacies of lithium titanate batteries becomes essential as the world increasingly shifts towards renewable energy and electric vehicles. This article delves into the workings, benefits, and applications of LTO technology, providing a comprehensive overview for those interested in modern energy solutions.
A lithium titanate battery is rechargeable and utilizes lithium titanate (Li4Ti5O12) as the anode material. This innovation sets it apart from conventional lithium-ion batteries, which typically use graphite for their anodes. The choice of lithium titanate as an anode material offers several key benefits:
The operation of a lithium titanate battery involves the movement of lithium ions between the anode and cathode during the charging and discharging processes. Here’s a more detailed look at how this works:
This mechanism enhances performance and contributes to LTO batteries’ longevity, making them suitable for applications where reliability is paramount.
Lithium titanate batteries come with several notable advantages:
Despite their numerous benefits, there are some disadvantages associated with lithium titanate batteries:
Lithium titanate batteries find applications across various sectors due to their unique properties:
When comparing lithium titanate batteries with other popular battery technologies like traditional lithium-ion and lead-acid batteries, several vital differences emerge:
Lithium-ion batteries are widely used due to their high energy density and efficiency; however, they have limitations in terms of safety and cycle life compared to LTO technology. Here’s how they stack up:
Lead-acid batteries have been around for decades but face challenges in terms of efficiency and lifespan:
Here’s a simple table summarizing these comparisons:
This comparison highlights that while each battery type has strengths and weaknesses, lithium titanate stands out regarding safety and longevity.
While generally considered safe due to their thermal stability and lower risk of combustion compared to other technologies, users should still be aware of potential safety considerations:
In summary, when used correctly within specified parameters, LTO batteries present minimal safety concerns compared to other battery technologies.
Proper maintenance can significantly extend the lifespan and performance of a lithium titanate battery:
The Zenaji AEON battery has a nominal capacity of 1.93kWh based on lithium titanate technology based on information from their datasheet. With a Depth of Discharge (DoD) of 100% ensures that the full capacity of the battery is utilised and puts them ahead of their competitors.
At 36 kg it''s a fairly portable battery module. Rated IP65, these batteries are clearly suitable for both indoors and outdoor installation. With an operating temperature range of -40 to 60 degrees celsius, they''re designed to withstand the harshest conditions of the Australian environment. Although Zenaji recommends you operate the battery ideally between 5 to 35 degrees celsius.
The Zenaji AEON is compatible with Victron, Goodwe, Sungrow, Selectronic, Schneider non-hybrid inverters brands. The recommended hybrid inverters are: Victron EasySolar / EasySolar II, Sungrow SH3K6 / SH4K6 / SH5K-20 / SH5K+ and Schneider XW / XW Pro series.
We reached out to Zenaji asking what the maximum number of batteries that can be hooked up in parallel. They have confirmed that technically an infinite number can be connected. Therefore this places the battery to be suitable for both residential and commercial solar applications.
There are a number of features of the Zenaji battery worth mentioning:
The biggest selling feature is their long cycle life. The Zenaji AEON batteries are rated for 22,000 cycles due to being made from lithium titanate. This far exceeds lead acid batteries which are typically 300 cycles and lithium-ion batteries which are typically warrantied up to 10,000 cycles. This has enabled Zenaji to have the confidence to offer a 20 year warranty on their batteries, which is twice that of most manufacturers who typically offer a 10 year warranty.
In testing completed by Zenaji their batteries have degraded by less than 10% in 22,000 cycles. The testing of their batteries is being completed in their factory completing 14 cycles every working day. Comparatively the Tesla Powerwall 2 is only expected to retain 80% of its nameplate capacity after 10,000 cycles. This very slow degradation rate, along with the IP65 protection rating, suggests the battery could have a much longer lifetime than 20 years.
The Depth of Discharge (DoD) of the AEON is 100%. This positions it ahead with some of Zenaji''s competitors, namely Sonnen (90% DoD and Alpha ESS (90% DoD).
In relation to this, it''s not recommended that people discharge their batteries fully as it shortens their lifespan as they have a limited number of charge/discharge cycles. This is why a manufacturer will state the DoD to give you an indication of how much you can discharge it. In saying that it''s important to remember that there''s a correlation between the cycle life and the DoD, i.e. the more often you discharge the battery to it''s maximum DoD, the shorter its lifespan.
With dimensions of 1635 x 155 x 145 mm (Height x Width x Depth) make the Zenaji AEON suitable for installing both inside or outside. They can be easily mounted either vertically or horizontally which enables flexibility in orientation. They come with mounting brackets.
We''ve reached out to Zenaji about the wholesale costs of their batteries and they replied with this information below:
*Please note the above price excludings installation and other required wiring and components.
As per Zenaji''s warranty documentation, the length of warranty is 20 years following the initial installation date. This covers the following points:
(1) It''s free from defects for 20 years for the Aeon battery module (A48-40) following its initial installation date; and
(2) The AEON battery module (A48-40) will have an energy capacity of 1.93kWh on its initial installation date at 25 degrees Celsius, and will retain at least 80 percent of its energy capacity during the life of the warranty period providing the total cycles of the battery does not exceed 22,000 cycles during the warranty period.
Under the event of a successful warranty claim Zenaji can choose to replace/repare the damange product or refund you the market value of the battery.
Warranty claims can be made by or on behalf of the end user who acquired and put the Zenaji battery into use for the first time. A subsequent owner of the Zenaji battery who provides proof of ownership may also be entitled to make Warranty claims.
Zenaji recommends that you operate the battery at normal room temperature or slightly below (22 degrees celsius) or the lifetime and cycle warranty will degrade and decline according to different tiers that they list on page 3 of their warranty documentation.
Your first point of contact for any issues shoudl be your installer, however being an Australian company you can also contact them directly for any warranty issues.
Address: 2 Shearson Crescent, Mentone, Victoria, Australia 3194
Telephone number: Australia: +61 401 476 713
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