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K2 Energy 3.2V 3.75Ah Lithium Iron Phosphate Energy Cells – LFP26650E-3750

LFP Battery Cell, Cylindrical, 3.2V, 3.75Ah, PET Sleeve




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Endurance and Safety

These LFP batteries are long-lasting, environmentally friendly and safe for use in a wide range of applications, including electric vehicles, solar energy storage systems and other high-performance applications. They are also recyclable with high thermal stability and low self-discharge rate, ensuring a reliable energy source.


Our LFP battery cells are designed for maximum efficiency, featuring advanced technology that optimizes power output and minimizes energy loss. Perfect for a wide range of applications, these cells offer a reliable and long-lasting power source that keeps your devices running at peak performance.


LFP battery cells are known for their reliability due to their low self-discharge rate and consistent voltage output, making them an ideal choice for long-term energy storage applications. Additionally, they are also resistant to overcharging and thermal runaway, further increasing their reliability.





How long will your battery last?

It depends on how you use it and the level of care you show it. We still have functional batteries that are 7 to 10 years old with at least 80% of their original capacity at K2.

What warranty does the battery have?

Our 1-year manufacturing warranty covers defective workmanship and materials. Depending on use, K2 batteries typically last up to 5-7 years with proper care.

How do I charge the battery?

Use chargers designed for Lithium Iron Phosphate batteries. For 12V batteries, charge to 14.4V and for 24V batteries, charge to 28.8V for best results.

What charger should I use?

K2 has two small chargers that can be used: K2C12V4A charger for 12V batteries and our K2C24V2A charger for 24V batteries. K2 will be introducing new chargers in the near future with higher charging current capabilities.

What is the temperature range for the battery?

Discharge–20 C to 60 C (-4 F to 140F)

Charge at 0 C to 55 C (32 F to 131 F)

How often do I need to charge the battery?

Charge it as soon as you receive it and after every use, especially if it is discharged until empty.

How can I get a data sheet for the battery?

Reach out to our customer support team at or give them a call at 702.478.3590.

What certifications does the battery have?

UNDOT 38.3. Check the data sheet for additional certifications.

Are your batteries waterproof?

No, splash resistant for most. Some can endure brief immersion in less than 1 meter of water, check the data sheet for additional information.

How should
I store my battery?

In a relatively cool dry place, fully charged for best results.

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