12v 200ah Marine Battery

Powering the Long Haul: The CoPow 12V 200Ah Lithium Marine Battery

If you plan to stay powered during multi-day trips or extended offshore voyages, the actual energy capacity of your battery is crucial. The CoPow 12V 200Ah Marine Battery is specifically designed for boat owners with high power demands. Its most significant upgrade is capacity: a single battery delivers twice the energy of a standard 100Ah battery, meaning you can run high-powered motors, multiple fishfinders, and onboard appliances for extended periods without worrying about running out of power.

This battery uses lithium iron phosphate cells, known for their long lifespan. Even with daily use and deep discharges, it can last around ten years. Despite the doubled capacity, its size and weight are well controlled. Replacing heavy lead-acid battery banks with this unit can reduce hundreds of pounds of weight instantly, making your boat feel lighter, more responsive, and even more fuel-efficient.

Considering the harsh marine environment, the casing is fully sealed to prevent moisture and salt spray from corroding internal circuitry. If you use it in cold conditions or northern waters, the built-in heating system automatically protects the cells during low-temperature charging, preventing performance issues caused by cold weather.

Additionally, managing this battery requires no technical expertise. By connecting your smartphone via Bluetooth, you can monitor the real-time remaining charge. You'll clearly see how long your power will last based on current usage, eliminating the need to guess from a voltmeter. For boat owners seeking convenience and a simpler onboard power setup, this battery is a solid and reliable upgrade.

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Lithium Marine Battery Product Catalog 1

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Wide Compatibility Across Boat Types: Efficient Lithium Power Solutions for Trolling, Propulsion, and Onboard Systems

Recommended Lithium Marine Battery System Bundle

For reliable operation and extended service life on your voyages, CoPow recommends pairing your battery with these fully compatible components. Using the complete package creates a more intelligent, robust, and durable energy setup.

Got special requirements? No problem.
As a premium LiFePO₄ marine battery manufacturer with advanced customization capabilities, CoPow offers a wide range of flexible options, including voltage, capacity, form factor, and system integration.
If you have any specific application needs, feel free to contact our engineering team, and we will provide professional solutions with the fastest response time.

Key Benefits of CoPow Lithium Marine Battery

Lithium Marine Battery Replacement for Lead-Acid Systems

Custom Marine Lithium Battery for OEM and Specialized Marine Applications

Flexible Series & Parallel Design for Easy 24V 48V Marine Power Systems

From long-distance sailing with high energy demands to home backup applications, CoPow lithium marine batteries offer flexible series and parallel setups to match your specific power and capacity requirements.

Typical Applications: From Marine Use to Home Energy

Scenario A: 24V Marine Power Upgrade

• Setup: Connect two 24V 50Ah batteries in parallel.
• Outcome: Provides a total of 100Ah. Designed for trolling motors, these batteries weigh only one-third of comparable lead-acid units, reducing draft and improving vessel speed.

Scenario B: 48V Off-Grid Home / RV System

• Setup: Two batteries connected in series.
• Outcome: Quickly establishes a 48V 50Ah high-voltage system. Fully compatible with popular inverter protocols such as Victron and Pylontech, delivering steady power for high-demand appliances including air conditioners, microwaves, and onboard electronics.

CoPow Installation Guidelines

• Consistency Matters: For reliable operation and extended battery life, always use batteries of the same model, capacity, and production batch when connecting in series or parallel.
• Voltage Alignment: Ensure each battery is fully charged before linking, and keep the voltage difference between units below 0.1V.
• Intelligent Safety: The integrated BMS continuously monitors cell balance across series and parallel setups, effectively preventing overcharging or deep discharging for worry-free operation.

Reliable Charging Performance at –20 °C for CoPow Lithium Marine Batteries

Lithium Marine Battery Manufacturer Specializing in LiFePO4 Technology

CoPow Lithium Marine Battery – Shipping & Total Cost Overview

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♦ Automotive LiFePO4

The use of automotive batteries, with high standards of safety and deep cycle life, excellent quality, and more stable performance.

♦ Long Cycle Life

Lithium iron phosphate battery cycle times up to 4000 times, with 10 years of service life, is three times the service life of lead-acid battery.

♦ Bluetooth Function

Built-in Bluetooth module, which can monitor the running status of the battery in real-time by smartphone or computer.

♦ Most Ideal Replacement of the Lead-acid Battery

The battery has ABS waterproof and flame retardant shell, IP65 waterproof grade, is a green pollution-free clean energy, no corrosive liquid, stable nature, not easy to overheat and fire. The efficiency of the LiFePO4 battery is as high as 100%, which can keep the battery discharge curve above 12.8V. Compared with a lead-acid battery with only 50% running time.

♦ Smart BMS

Built-in BMS safety protection system, with low temperature charging protection and high-temperature cut-off function, to prevent battery damage, and can prevent common problems leading to lithium battery failure, safe and stable, no memory effect, maintenance free, plug and play, excellent self-discharge rate.

♦ Lightweight

Light and portable, a single module of lithium iron phosphate battery is only 48.28 pounds, which is 1/3 of the weight of the lead-acid battery, and it is very convenient to move or install.

♦ Support Series and Parallel

With automatic balance function, support series and parallel, can easily series and parallel multiple batteries, so that the battery average charging efficiency increased, to obtain greater capacity

Why CoPow Battery Is Safer

Why CoPow Battery Is Smarter

CoPow battery, safer and smarter, always so cool.

★Use High-quality Batteries

Our lithium iron phosphate battery adopts the A-class cell produced by EVE, CATL, and other big brands. Compared with the common B-class or C-class lithium iron phosphate battery on the market, its life is longer and safer.

★Strict Test Report

We can provide a complete test report, each product has been tested multiple times,

and the quality is safe and reliable.Our batteries have passed strict quality requirements, and each battery has a unique label, to ensure product visualization and traceability.

★Engineers from CATL, BYD, OptimumNano and EVE.

We have a technical and R&D team with more than 20 years of industry experience;

★Perfect Pres-sales and After-sales Service

We have the best delivery and professional customer service team, dedicated to providing you with the best products.Warranty can be extended to 5 years.

TOP CoPow R&D Team

With 20 years experience on average

With specially-appointed professors as the backbone,

CoPow R&D team continuously committed to technological innovation.

With a perfect safety production management system, to achieve close monitoring of product quality, effectively improve our work efficiency, reliable quality management system can protect your interests.The officially certified 12v 200Ah lithium ion battery makes you more trustworthy.

LiFePO4 battery compared with a lead-acid battery, safe and long life, lightweight, self-balancing, very suitable for outdoor yachts and fishing boats, boats and kayaks motor power supply provides huge the advantages;

12V200AH LiFePO4 batteries have 100% rated capacity and weigh only 61 pounds, bringing more available space, and enabling you to deliver higher and more reliable performance for fishing boats and yachts.

12v 200ah marine battery adopts ABS shell, with all-round protection, can prevent the surrounding water from all angles, in addition, can also prevent dust, very suitable for yachts and fishing boats and other outdoor scenes;

It has a long warranty period, which can be stored for more than two years under arbitrary charging without maintenance. It is very suitable for use in seasonal equipment, such as fishing and sailing boats.

CoPow battery, safer and smarter, always so cool.

Always highly reviewed by customers all over the world.

(1). How Much Does a 200 Ah Lithium Battery Weigh?

A 200Ah lithium battery weighs 61 pounds and it gives you 100% of its rated capacity.

(2). How Long Can a 200Ah Lithium Battery Last?

Normally, a fully charged 200Ah battery will last for 10 hours at 20 amps and more than 20 hours at 10 amps.

(3). Can I Add two 12V 200AH Batteries to the Existing four 12V 200AH Batteries, So that a Total of six 200Ah 12 Batteries Are Connected in Parallel?

In general, the MOS of BMS has a voltage endurance value of 80V, if it exceeds this value, MOS will be burned out. However, the voltage of a 12.8V battery in series with 4 strings is 12.8V*4=51.2V, and the battery charging voltage is between 53.25 and 54.75V. We set a series and parallel limit of 4 batteries to prevent exceeding the upper limit. If more than 4 batteries are used in parallel, it may increase the risk of battery backflow and burn the BMS protection board. Our batteries can support up to 4 12V 200AH batteries in series, so we recommend that you do not use more than 4 batteries in parallel.

(4). Does the 12V 200Ah Battery Have Overcharge and Over-discharge Protection? Or Reverse Polarity Protection?

Yes, the 12V200Ah battery has BPM, and the battery protection module in the battery can handle the problem

(5). I'm Interested in the 200ah Battery. Are They Compatible with Victron's Bluetooth monitoring?

They are compatible, you need to connect an extra monitor to your battery, but you have to know the voltage range to monitor.

(6).Which Battery Can Be Used in a Boat, 100Ah or 200Ah? I am Concerned about Discharging Issue Since It's Cold these Days. What Should I Do?

The batteries of our 12V100Ah or 12V200Ah can be applied to the ship. They are all built-in 100ABMS and can support up to 100A. The maximum load power of the continuous charge/discharge current is 1280 w. but the maximum load power of 12V100Ah is 1280Wh, and the maximum load power of 12V200Ah is 2560Wh. You can choose a battery based on load power and how long it needs to run.

We also have some feedback from customers in cold areas who have chosen LifePO4's dedicated battery charger with a low-temperature cut-off function but they need to charge the battery below 0°C. You can refer to the normal operating temperature of our battery:

Charge: 0°C to 50°C

Discharge: -20°C to 60°C

Storage: - 10 ℃ to 50 ℃

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