When compared to traditional lead acid batteries...

Product Highlights

• K2 Energy's 12v 111ah G27 style battery is powered by high-capacity lithium iron phosphate cells, ensuring the highest level of safety during operation and superior performance. It also boasts advanced battery features.

• This battery features an ultra-lightweight design, making it remarkably easy to move compared to traditional sealed lead-acid batteries.

• Designed for durability and longevity, the K2 G27 battery includes cell balancing for consistent discharge, a standby life of 5-10 years, and a cycle life of over 3,000 cycles.

• Enjoy a generous 111 amp-hours of charge, surpassing the standard 100 amp-hour offerings in the market.

• Expand your total capacity by connecting an unlimited number of K2 Energy G27 batteries in parallel. You can also increase your voltage by connecting up to 4 packs in series.

• K2 Energy's Lithium Engineering Team has integrated advanced features into this battery, including an advanced battery management system, a patented battery status and control panel, and a unique on/off shipping mode for safe storage and transport.

Product Benefits

Safe Battery Design

K2 LiFePO4 chemistry batteries are less likely to leak or rupture, and they’re not prone to thermal runaway, which can cause a fire or explosion. K2 LiFePO4 batteries are more environmentally friendly than sealed lead-acid batteries, as they don’t contain any toxic heavy metals.

Lower Total Cost of Ownership

While LiFePO4 batteries may have a higher upfront cost than lead-acid batteries, they’re often the more cost-effective option in the long run. They offer longer lifespans and require less maintenance, which can ultimately save you money over time.

No Maintenance & Longer Lifespan

LiFePO4 batteries require minimal maintenance, with no need for regular maintenance. Lead Acid batteries require regular maintenance with the frequent need for adding distilled water and replacing corroded terminals. Lead-acid batteries develop a memory effect over time, which means they can quickly lose their capacity to hold a charge. Lithium batteries hold their charge longer, more consistently, and have a much longer overall lifespan.

What Makes Us Different

Free Shipping

on all order over $150

Pioneering LFP Innovation

for over 16 years

Designed & Developed in the USA

and proud of it

Extended Cycle Life & Battery Control Panel

The K2 12v 100ah G27 battery offers exceptional durability with an extended cycle life of over 3,000 cycles, guaranteeing years of reliable use. This lithium battery comes equipped with K2's patented status and control panel. Monitor the battery's state of charge, toggle the battery on and off, and activate a shipping mode for extended periods during transit.

Advanced Battery Management System (BMS)

Our BMS system safeguards your battery with features such as low voltage cutoff, high voltage cutoff, overcharge protection, short circuit protection and high/low-temperature protection-preventing damage from extreme conditions. Our K2 Energy BMS has an auto-balancing cell function to actively maintain consistent voltage and state of charge across all LiFePO4 cells to extend battery lifespan.

Engineered for Outdoor Adventure

The K2 12v 100ah G27 Battery is specifically engineered for rugged outdoor applications. It serves as an ideal power source for RVs, travel trailers, and camper vans, providing accessory power. Moreover, its marine capabilities make it a perfect choice for speedboats, fishing trolling motors, and sailboats.


Manufacturer Warranty

5-year manufacturing warranty covers defective workmanship and materials

Storage Capacity

111 Ah (amp hours). K2 Energy's batteries deliver a steady power output over the entire span of 111 amp hours


30 lbs (13.6 Kg) - More than 50% lighter than comparable lead acid batteries


Screw in terminals allowing for maximum connection flexibility


LxWxH - 12.1 in. (307.4mm) x 6.6 in (167.7mm) x 8.3 in (210.8mm)



Operating Temperature

-4°F to 149°F (-20°C to 65°C) - Far exceeding the safe operating range of traditional lead acid batteries


111 amp recommended continuous load current, 150 amp max continues load current, and 400 amp max pulse discharge.


1280 Watts (Wh)

Group Size 27

One of the most common marine battery sizes.

Added Benefits

Includes a battery capacity gauge, full battery management system (BMS) and IP67 enclosure

Series & Parallel

Wiring In Series: Max 4 Packs
Wiring In Parallel: No Limit

Frequently Asked Questions


Unbelievably light weight. Will be perfect for running my QRP rig from the field. Amazing technology. Would recommend to anyone.

John T.

Love this battery. Maintenance free and SAFE! I use mine for storing solar energy for DC powered projects and applications.


A lightweight and long-lasting battery

Jeff Tang

12 days ago

These K2 batteries are perfect. They work exactly as advertised and the run time is a little longer than I had expected.

David O.

Cutting edge technology and impeccable customer service. Highly recommended!

Derk Hebdon

Verified customer