In 2021, the cost of lithium batteries like LiFePo4 is going down while their durability is increasing. Now is the perfect time to replace your Lead-acid battery and upgrade your solar generator or solar system.
Lithium batteries are the most versatile electricity storage available. Indeed, they are lightweight, offer great energy density (3 to 4 times higher than lead-acid), powerful (up to 2.4kW), perfectly fitted for solar energy storage, and ultimately long lasting (up to 10 years).
The cost of lithium batteries is mostly related to their capacity expressed in Amps.hour (Ah) or watt.hour (Wh).
How much do lithium batteries cost on average?
- 50Ah (600Wh) costs $436
- 100Ah (1200Wh) costs $620
- 200Ah (2400Wh) costs $1133
First, we will describe what components contribute to the cost of lithium batteries. Then we will look at the most important parameters to consider for before buying your lithium battery.
And finally, we will compare 15 lithium battery brands and their prices.
(If you’d like to get straight to the point, jump directly to our comparative price chart at the end of the article. You can do so by clicking this quick link.)
Cost of Lithium Batteries (Breakdown)
The main lithium battery technology available on the market is LiFePo4. If dissect them, you will find a few components which greatly dictate the overal lithium battery cost:
- Battery Management System (BMS)
- Prismatic Lithium battery cells
- Electrical connections, sensors
Let’s have a closer look at the two main parts:
Battery Management System (BMS)
A lithium battery cannot work without a BMS. This essential electronic component has three functions:
The BMS is connected to each prismatic lithium battery cell. It makes sure that they are all balanced and equally charged/discharged by controlling the charging and discharging current.
It protects the battery from overdischarging and overcharging and ultimately prevents it from overheating by disconnecting the battery cells if needed.
All lithium battery brands featured in our article include a built-in BMS.
Prismatic Lithium battery cells
They are the basic building blocks of all lithium batteries. They have a standard voltage of 3.2V, and their capacity varies: 50Ah, 100Ah, 200Ah and more.
Depending on the material quality and manufacturing process, their durability (number of cycles), robustness and fast charge/discharge abilities are affected.
Four prismatic lithium cells are connected in series resulting in a 12V lithium battery pack (4*3.2V=12.8V).
If you want to know more about how a LiFePo4 battery works, check-out our dedicated article.
Currently, 80% of the whole lithium battery cost, goes into the LiFePo4 prismatic cells.
4 Steps on how to choose the correct lithium battery
This is what you should look for when choosing your lithium battery:
1 – The capacity
The capacity is usually expressed in Ah. 100Ah means that your battery could provide a current of 100 Amps for one hour at a minimum voltage of 12V.
This discharge rate is called 1C: 100% of the capacity discharged in one hour. This is also equivalent to 10 Amps during 10 hours (10Amps*10hours=100 Ah), a discharge rate of 0.1C: 10% of the total capacity discharge per hour.
A more accurate and absolute measurement of the capacity is the Wh. For example a 12V, 100Ah battery has a capacity of 12*100=1200 Wh.
Note that: a 12V – 100Ah battery and a 24V – 100Ah battery, both have the same Ah but in the end the 24V stores two times more energy: 24*100= 2400Wh.
In this article we mostly use Ah because the batteries we selected are all 12V.
2 – The continuous charge/discharge current
The BMS pilots the charge and discharge current, the higher the better.
Most of the BMS accept charging/discharging currents from 50Amps to 100Amps. Lithium batteries allow for quick charging. Indeed, with a current of 100Amps a 100Ah battery could be charged in one hour.
However, in practice, a one hour charge will give 80% of the total capacity, the remaining 20% might last one more hour.
3 – The peak discharge current
Depending on your application, you might require a battery with large peak discharging currents. For example, to start heavy equipement such as a water pump.
4 – The total life cycles
This is your batteries durability, the most modern lithium battery models can reach up to 7000 charge/discharge cycles with a 10 years life duration.
15 brands of the best lithium batteries
Our selection of the 15 best lithium battery brands in terms of durability, power, safety and costs.
(Please Note: These prices were pulled from Amazon on 2021/06/09 at 09:32am. Prices continuously fluctuate. Therefore, you may find a slightly different price after clicking through our links.)
Ampere-time is one of the most trusted brands for lithium batteries. Their products are versatile, powerful and ready for quick charge. One of the most important features: they are highly durable with more than 4’000 cycles or 10 years of good use.
Ultimately, the cost of their lithium batteries is very competitive.
The lithium batteries from JITA are build with high quality materials. They are one of the best choices for solar generators, marine applications (certified IP65, waterproof) and in combination of an inverter in a solar off-grid system.
They can continuously deliver more than 1 kW of power and are certified to last more than 4000 cycles or 10 years.
ExpertPower is US company based in Los Angeles. Their newest lithium battery line benefits from their 30 years experience in battery manufacturing.
Their last products are reliable, powerful (1.2kW discharge), robust (low and high temperature tolerance) and extremely durable (10 years lifetime, up to 4000 cycles). All of that at a competitive price.
RENOGY is a US based company, founded by a team of scientists in 2010. They have a strong expertise in domestic solar energy production. Their products are built to the highest quality standards and combine state-of-the-art components. Their lithium batteries are extremely durable (4000 cycles, 10 years) thanks to their reliable BMS.
VISION is a Chinese battery company, founded in 1994. It now has multiple branches in US and Europe where it develops lithium technology. Their products are robust and innovative thanks to an intensive R&D effort. They are resistant to cold weather, with up to 15 years life time, more than 3000 cycles. Ultimately, it has a built-in bluetooth realtime monitoring module.
Flypower is a Chinese company established in 2005. They have a strong expertise in the design and manufacturing of NiMh – NiCd and Lithium batteries .With two productions sites and two research laboratories in partnership with local universities, the company is a major actor in the market. Therefore, their lithium batteries are up to the highest standard, offering robust and powerful BMS, and LiFePo4 battery cells with the highest life duration (10 years).
Scremower is a company specialized in LiFePo4 battery manufacturing. They offer a large range of lithium batteries from 12V to 60V with various capacities. Their energy storage solutions will last up to 10 years and 3’000 cycles, they offer a 5-year warranty. The capacity of their batteries are certified and you won’t have any disappointment regarding this matter.
Moseworth is well known in the RC world, as it is one of the leaders in LiPo (lithium-polymer) batteries for these type of applications. The LiFePo4 batteries produced by Moseworth are up to the highest standard in the industry, with a 5-year warranty and 10-year life duration for the battery cells (3’000 cycles).
LYNX might be the smallest lithium battery company in our article; however, their products offer great power and durability performances. There is no compromise on their safety, thanks to quality built-in Daly Bluetooth BMS. They will last long (10 years, up to 5000 cycles). In addition, the company has a US-based customer service.
CHINS battery is a Chinese Company with its own manufacturing site. They offer the longest warranty of all lithium battery brands: 8 years, with a US-based customer service. Their products are certified to last 10 years and more than 3’000 cycles. The internal BMS protects the battery from overheating and can deliver up to 100Amps.
AIMS Power is a US-based company, created in 2011. They rapidly expanded to cover all aspects of solar energy production, storage and management. Thanks to a high quality customer-based approach, their lithium batteries combine all the qualities needed to be charged by solar energy: durability (up to 5’000 cycles, more than 10 years), robustness and power.
Battle Born is a US-based company, specializing in power systems for off-grid solar generators. All their products are designed and assembled in the US. They provide top of the line lithium batteries, that last long (more than 4’000 cycles), are resistant to water projections and extreme temperatures. On top of that, they offer a real 10 year replacement warranty.
TalentCell is a Chinese company founded in 2001. They design and manufacture lithium, NiMH batteries and solar products. Their LiFePo4 batteries last long (more than 3’000 cycles) and are safe thanks to the qulity built-in BMS.
In addition, they are the most affordable of all our featured battery brands.
Lithova is a battery brand specializing in heavy duty lithium batteries. Their products are strongly built and ready for marine use. They offer extremely long-life duration (10 years and 4’000 cycles) and can operate under a broad range of temperatures (-20°C to 60°C). In addition, they come with a 3-year manufacturer warranty.
|Lithium battery cost||559 USD|
Mollpower offers off-grid power solutions. They assemble their batteries in the US. Their lithium batteries are certified to last up to 3’000 cycles. The built-in BMS ensures high product safety. In addition, their LiFePo4 batteries come with a 3-year manufacturer warranty.
|Lithium battery cost||499.9 USD|
Cost of 15 lithium battery brands compared
(Please Note: These prices were pulled from Amazon on 2021/06/09 at 09:56am. Prices continuously fluctuate. Therefore, you may find a slightly different price after clicking through our links.)
|AMPERE TIME||299.99 USD||499.99 USD||799.99 USD|
|JITA||N/A||479.9 USD||879.9 USD|
|EXPERTPOWER||449.99 USD||689.99 USD||1099.99 USD|
|RENOGY||499.99 USD||799.99 USD||1499.99 USD|
|VISION||599 USD||899 USD||1899 USD|
|FLYPOWER||426.99 USD||475 USD||889 USD|
|SCREMOWER||364 USD||538 USD||1005 USD|
|MOSEWORTH||377.24 USD||479.99 USD||1034 USD|
|LYNX||N/A||650 USD||1350 USD|
|CHINS||369.99 USD||479.99 USD||869.99 USD|
|AIMS POWER||399 USD||749 USD||1499 USD|
|BATTLE BORN||575 USD||1049 USD||N/A|
|TALENTCELL||N/A||459.99 USD||779.99 USD|