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ROCKSOLAR 12V 18Ah Deep Cycle LiFePO4 Battery with BMS System

ROCKSOLAR 12V 18Ah Deep Cycle LiFePO4 Battery with BMS System

Regular price $139.99 CAD
Regular price $199.99 CAD Sale price $139.99 CAD
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Introducing the 12V 18Ah Deep Cycle LiFePO4 Battery from ROCKSOLAR, the perfect solution for all your power needs. Whether you're looking for a reliable source of backup power for your home or on-the-go power for your outdoor adventures, our state-of-the-art battery has got you covered. With a high capacity of 18Ah and a stable 12V output, our LiFePO4 battery delivers consistent, reliable power that you can count on.
Plus, with its ultra-long service life of up to 3500+ cycles and a 10+ year service life, you can rest easy knowing that our battery will provide you with reliable performance for years to come. The battery is also lightweight and easy to transport, weighing only 4.6 pounds. Invest in the ROCKSOLAR 12V 18Ah Deep Cycle LiFePO4 Battery today and experience the power and convenience you deserve.

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  • Features
  • Tech Specs
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  • SERVICE LIFE: ROCKSOLAR LiFePO4 lithium batteries have an ultra-long service life, a cycle life of over 3500+ and the discharge rate can reach 100%. With an 11-year warranty and a 10+ year service life this state-of-the-art battery will give you peace of mind


  • CONSISTENT POWER and LIGHTWEIGHT: provide consistent power for all 18 amp hours. RS LiFePO4 batteries have a flat voltage curve, which means they have a steady power output as the battery discharges. The power output will not dramatically drop like similar sized SLA batteries. You get all the juice down to the last drop. Weight only 4.6 Lb.


  • IDEAL for Rugged & Harsh Environments: Our patented BMS offers temperature, short circuit, over discharge, over current & over charge protection while also offering battery cell balancing. Charging temperature: 0C∽45C , Discharge temperature: -20~-60. Our BMS will auto-shut off the battery when it is outside of the working temperature.


  • APPLICATIONS: ROCKSOLAR LiFePO4 18AH batteries provides a full day of power for high amp draw fishing finder, marine GPS, ham radio, outdoor use, UPS , SLA and many more. Easy link in series to create 24V, 36V, or 48V systems.


  • Dedicated Technical and Customer Support for Entire Product Life: ROCKSOLAR's USA Technical and Customer Support Center located in Las Vegas, NV. Canada Technical and Customer Support Center Located in Waterloo, ON . Tech Support Line: 1-800-858-4318



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‎‎LiFePO4 Battery 12V 18Ah

Product Dimensions

‎7.1 x 3 x 6.6 Inches; 2.04 Kilograms

Item model number

‎‎‎LiFePO4 Battery 12V 18Ah


‎1 Lithium Ion batteries required. (included)

Is Discontinued By Manufacturer


Manufacturer part number


Special features

‎best fish finder battery, wide working temperature: -20C -60C, SLA replacement battery, Light weight, best ham radio battery


‎12 Volts

Item Weight

‎2.04 kg

Country of origin


A BMS (Battery Management System) is an electronic system that manages and protects a battery by monitoring its status, controlling its charging and discharging, and ensuring its safe and efficient operation.

LiFePO4 batteries offer several advantages over other types of batteries, including a longer service life, higher cycle and discharge rates, lower weight, and better performance in rugged and harsh environments.

The service life of this battery is 10+ years, and the cycle life can reach 3500+ cycles.

Yes, this battery is ideal for marine applications such as fish finders and marine GPS devices, as it offers consistent power and reliable performance in harsh marine environments.

This battery is designed to be easy to install and connect, with standard terminals and connectors that are compatible with most applications. However, it is recommended to follow the instructions and safety precautions provided in our manual when installing and connecting the battery.

Yes, this battery comes with a 10-year warranty that covers any defects or issues related to the battery's manufacturing or materials. Additionally, ROCKSOLAR offers dedicated technical and customer support in Canada for the entire product life, so you can get help and advice if you encounter any issues or questions.

File Name File Type Language

24 Hour Backup Power System

Product Cataloague EN apple

Customer Reviews

Based on 61 reviews
John Craig

ROCKSOLAR 12V 18Ah Deep Cycle LiFePO4 Battery with BMS System

Robin Fulcher
These are so much lighter than sealed lead acid batteries

A good gell battery. Haven't had any problems.

Michael Bush
Best Deep cycle battery

I used this battery on a winch and on a power trailer stand and it worked great with no issues. Easy to hook up and use.

Angela Scott
Great product

I made a solar generator with these and it works great!

Thresa Addison
Great little Battery

This battery has a long battery life and works exactly for what I need it to do. I would recommend it to anyone looking for best deep cycle battery.

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