Create an account

Click to accept our terms of service & privacy policy


K2 Energy 12V 11Ah K2B12V11EB Lithium Iron Phosphate Battery

Are you looking for an upgraded 12 volt battery that can withstand the test of time? K2 Energy’s 12 volt 11 amp-hour energy pack is an upgraded version of our legacy pack that can deliver to many power needs. This powerful lithium battery offers superior performance over traditional lead acid batteries, with up to 10x the cycle life and zero maintenance. With its environmentally friendly chemistry and unmatched safety, the K2 12 volt 11 amp-hour battery is the perfect choice for a variety of applications.




Secure Payment

add to cart Bulk pricing discount

Power Your Adventure

These rechargeable batteries are known for their long lifespan and high energy density, making them a reliable and efficient choice for a wide range of applications. So whether you’re hitting the trails, exploring the great outdoors, or embarking on a new journey, these batteries can help you stay powered up and ready for anything.

Safety In Mind

With high resistance to thermal runaway and built-in protection circuits, these batteries are safe to use in high-stress environments. Their long lifespan and high energy density make them a reliable and efficient power source for a wide range of applications.





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.

Please rotate your device, this website is best viewed in portrait orientation.