Best LiFePO4 Battery for Solar Systems

In this article, I will compare the best lithium batteries.

I will tell you which one to choose based on these criteria:

• Companies reputation and warranty
• User satisfaction
• Internal workmanship (safety)
• Price

These are the best LifePo4 batteries

Best Overall	Runner-up	Best Alternative
Li Time	SOK Plus	Redodo
Best overall battery because of good build quality, reliability, and price	Best battery for rugged conditions like vans and campers	Two 12V 100Ah batteries, excellent customer service
5/5 build-quality	5/5 build-quality	5/5 build-quality
5/5 price	4/5 price	4.5/5 price
5/5 Customer service	5/5 Customer service	5/5 Customer service
Check Price	Check Price	Check Price

Best Lithium Batteries

Best Value LiFePO4 battery – Li Time

LiTime is known as Ampere Time. They have re-branded their battery line-up.

They have two versions, the normal and the mini. The mini uses pouch cells, while the normal version uses prismatic cells. Prismatic cells will last longer but are a bit bigger. I recommend using their normal version. This is the most value for money you will get. Here are a few remarkable features of this pricepoint:

• Low-temperature cutoff for the smart version
• One-touch button to activate the battery
• Supports connection of 4 batteries in series and 4 in parallel (total 16). This is useful if you want to expand your system later.
• 100A charge and discharge rate

There are two other models for this battery.

Use promo code ‘cleversolarpower’ at checkout and receive a 3% discount at the official LiTime store.

If you use the battery in freezing temperatures, I recommend getting the version with a built-in heater.

LithiumSolar reviews the Smart Battery with a low-temperature cutoff in the following video.

Choose the basic version if you want the best budget LiFePO4 battery (also called lfp battery). There is no Bluetooth connectivity and no low-temperature protection.

Runner up – SOK Plus

If your battery needs to be capable of absorbing vibrations or shocks like in a vehicle, then I recommend using the SOK Lithium battery.

SOK has an excellent reputation for delivering quality batteries at a reasonable price. They even offer a 7-year warranty if you buy from current-connected. They add 3 more years to that.

They have several versions:

• Plus version
• Pro version -> cannot be connected in series to make 24 or 48V
• Marine version

Some remarkable features of the battery are:

• Metal case
• The metal bracket inside holds the cell in place
• Low-temperature cutoff on all versions
• All except the heated version can be connected in series.
• 50A charge and 100A discharge rate.

Here is a list of all the available 12V 100Ah Lithium batteries from SOK:

Watch the video review by Love your Rv:

Best Alternative – Redodo

Redodo, formerly known as Zoom battery have rebranded their barry line.

I don’t have experience with them personally, but the reviews on amazon are all very positive. The customer service seems great. If you want to have a two pack of 12V 100Ah batteries, then this is your best choice. If you order this battery you can make a 24V 100Ah battery or a 12V 200Ah battery.

This battery doesn’t have low-temperature protection, so if you plan on using this battery, make sure your charge controller has a temperature sensor so it will disable the charging when the temperature goes below 5°C (41°F).

Lithiumsolar did a great review and teardown of this battery:

FAQ about LiFePO4 Batteries

Is LiFePO4 better than lithium-ion?

Lithium-ion or Li-ion batteries are found in cell phones. These batteries are made for fast charging, but trade that with lifespan.

Did you notice that your phone’s battery has been reduced over its first few years?

If we change the batteries in our phones with LiFePO4 battery cells, we will get a longer lifetime, but the charging will take longer. That’s why a healthy trade-off with cycle life and charging speed has been made, and that’s why our phones use Li-ion batteries.

LiFePO4 batteries are in the same category as Li-ion batteries. Lithium iron phosphate is like part of the Li-ion family.

For solar systems, LiFePO4 is still preferred because it’s safer and doesn’t contain cobalt (source).

How good are LiFePO4 batteries?

Lithium iron Phosphate batteries have come a long way since their early development in 1996. These kinds of batteries are used in  solar systems or electric vehicles.

Their development has made these the go-to battery chemistry for these applications.

Can lithium batteries last 10 years?

Yes, if we use the cycle life of lithium cells we can calculate the following:

6,000 cycles / 365 days = 16,4 years

After these cycles, there will still be 80% capacity left. If you want to learn more about this, then read my full article here.

Conclusion

This article showed the best budget, durable, and reputable battery brands if you want to buy a lithium (LiFePO4) 12V 100Ah battery.

Nick

I’m an off-grid enthusiast. I created this website to give clear and straight-to-the-point advice about solar power. I’m also the author of the book ‘Off-grid solar power simplified‘. Read more about me on my about page, check out my Youtube channel, or send me a message.