Your Best
Wholesale Lithium Ion Marine Battery Supplier & Manufacturer In China
Call us today

Your Reliable Custom Marine Lithium Ion Batteries Factory
Founded in 2010 and situated in Shenzhen, China, KET specializes in providing expert solutions and producing new energy series products. The company occupies an area of 7000 square meters and encompasses R&D, production, and marketing.
KET, with over a decade of experience in designing and manufacturing batteries, offers expert custom solutions for marine lithium ion batteries. All you have to do is give our engineers your ideas and we will have a battery pack solution for you within 24 hours.
Our ISO 9001 certified management system guarantees a highly standardized process for the production and quality control of your custom marine lithium ion batteries, resulting in a lower defect rate and improved customer satisfaction.
In addition, the majority of our standard products are certified with CE, FCC, RoHS, UN38.3, Air Transport Report, MSDS, etc. If your new custom marine lithium ion batteries require certification, we will be happy to assist you in obtaining the necessary certification in the most efficient time.

Strict Quality Control For Your Lithium Ion Marine Battery
As a professional lithium ion marine battery manufacturer, KET is outfitted with the most up-to-date testing equipment, including vibration testing equipment, an aging test room, capacity separation equipment, comprehensive testers, and charge/discharge testing equipment.
Every product undergoes a series of tests before it is shipped from the factory, including inspections of incoming materials, protection boards, charge/discharge tests, and aging tests. These tests have greatly reduced the defective rate of all lithium ion marine batteries.
Furthermore, every step of the core production process is recorded, enabling us to quickly identify and resolve any issues that may arise with a batch. Our after-sales management abilities have been acknowledged by our customers.
Lastly, if you need to send personnel to visit our factory for inspections when your bulk order is made, we can fully cooperate.
Learn More
Your Best Custom Lithium Ion Marine Battery
A lithium ion marine battery is a type of rechargeable battery that utilizes lithium ions as the primary charge carrier, rather than the traditional lead-acid batteries. They are widely used in marine applications such as powering electric boats, sailboats and other watercrafts. They are known for their high energy density, low self-discharge rate, and low maintenance compared to traditional lead-acid batteries. They also have a longer service life, and can be discharged and recharged more times than lead-acid batteries. However, they can be relatively expensive and require specialized charging equipment.
- Production Line
- Production & Test Equipment
- Certification
Battery Detector
Automatic Wire Stripping Machine
Vibration Testing Machine
Salt spray test cabinet
Rechargeable battery performance testing equipment
Lithium battery automatic testing equipment
Discretionary cabinets
Battery charge and discharge test system
Integrated Tester
Automatic spot welding machine
UN38.3
MSDS
ISO 9001 2015
invention of Lithium battery testing equipment
CE
How To Custom Your Lithium Ion Marine Battery?

Note: Due to different custom requirements there will be different MOQ requirements, while the cost of raw materials for batteries has fluctuated a lot recently. So please contact us in time and get the latest lithium ion marine battery quotes.
What Is A Lithium Ion Deep Cycle Marine Battery?
A lithium ion deep cycle marine battery is a type of battery specifically designed for use in marine environments. It uses lithium-ion chemistry, which is known for its high energy density and long life compared to traditional lead-acid batteries. A deep cycle battery is designed to be discharged and recharged multiple times, making it well-suited for applications where the battery will be regularly drained and recharged, such as powering marine vessels. A deep cycle marine battery is designed to withstand the corrosive marine environment and temperatures fluctuations. It is also typically lightweight and compact, making it a good choice for use in small boats and other marine vessels where space is limited.
Choosing The Right Lithium-Ion Marine Battery
When it comes to choosing the right lithium-ion marine battery for your boat, there are a number of factors to consider. The first thing to consider is the type of
lithium-ion battery you need. There are several different types of
lithium-ion batteries on the market, including
lithium iron phosphate (
LiFePO4), lithium cobalt oxide (LiCoO2), and lithium manganese oxide (LiMn2O4). Each type has its own set of advantages and disadvantages, so it's important to choose the type that best suits your needs.
Another important factor to consider is the capacity of the battery. The capacity of a battery is measured in amp-hours (Ah) and is used to determine how long the battery will last before it needs to be recharged. For example, a battery with a capacity of 100Ah will last longer than a battery with a capacity of 50Ah.
The size and weight of the battery are also important factors to consider.
Lithium-ion batteries are generally smaller and lighter than lead-acid batteries, but it is still important to choose a battery that will fit in the space you have available. Additionally, it is also important to consider the discharge rate of the battery. The discharge rate is measured in C, and it indicates how fast a battery can be discharged. A higher C rating means that the battery can be discharged faster.
Finally, it is important to consider the quality of the battery. Choosing a high-quality battery from a reputable brand will ensure that it is reliable, long-lasting, and easy to maintain. It's also important to check the warranty offered by the manufacturer and read reviews from other users to get an idea of the battery's performance.
In conclusion, choosing the right lithium-ion marine battery for your boat is crucial for ensuring optimal performance and longevity. It's important to consider the type of battery, capacity, size, weight, discharge rate and quality when making your selection. By considering these factors and choosing a high-quality battery from a reputable brand, you can ensure that your battery is reliable, long-lasting, and easy to maintain. Additionally, it's also important to use a charger that is specifically designed for the type of
lithium-ion battery you have, to ensure optimal performance and longevity. With the right lithium-ion marine battery, you can enjoy peace of mind knowing that your boat will have the power it needs to run smoothly and safely.
Lead Acid Vs Lithium Ion Marine Battery
Lead acid batteries are the most common type of marine battery and have been used for many years. They are relatively inexpensive and have a long life if properly maintained. However, they are heavy and can be prone to leakage and sulfation.
Lithium ion batteries are a newer technology and are becoming increasingly popular in marine applications. They are much lighter than lead acid batteries and have a higher energy density, meaning they can store more energy in a smaller package. They also have a longer lifespan and require less maintenance. However, they are more expensive than lead acid batteries.
FAQ
- What is your MOQ of lithium ion marine battery?
- If the materials of your battery are the regular, there will be no MOQ. But we only provide our battery packs for commercial use.
If he materials of your batteries are customized, there will be MOQ limit. But the MOQ is different for different materials, please contact us to get more tetail.
- What will you do if we got damaged products when arrive?
- If the batteries are damaged upon delivery, we will replace them at our cost. No charges will be made on your part if you show us images & video of the damage.
- How to ship your custom lithium ion marine battery?
- The logistics companies we work with are strong. Currently, depending on your destination and order, we are able to provide options such as air freight, sea freight, express delivery, rail transport and trucking.
- How do I know whether you've shipped my order or not?
- Tracking NO. will be offered as soon as your order be shipped out. Before that, our sales will be there to check the packing status, photo of the order and let you know the detail shipment information.
- Which incoterms you usually take?
- Normally, train/sea will be DDP. And if you have your own shipping agent in China, EXW is supported (we can send your goods to your agent's warehouse).
- What is your terms of packing?
- Generally, we pack the goods in neutral brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes.
- How can we pay?
- You can pay via T/T, Paypal.
- What is the best marine battery brand?
- There are several well-known Chinese brands of marine batteries that are known for their high quality and performance. Some of the top brands include:
1.KET Battery: KET is a leading Chinese brand of batteries and energy storage systems, known for their high quality and performance in marine applications.
2.Leoch: Leoch is a well-known Chinese brand of batteries, known for their high performance and durability in marine applications.
3.Rocket: Rocket is a Chinese brand of batteries known for their high performance and quality in marine applications.
4.Eastar: Eastar is a Chinese brand of batteries known for their quality and performance in marine applications.
5.Exide: Exide is a Chinese brand of batteries known for their high performance and quality in marine applications.
It's worth noting that the best marine battery brand will vary depending on the specific needs of the vessel, the type of usage and the budget. It's important to do research and compare the features and specifications of different brands and models to find the best fit for your needs.
- Can a lithium battery last 15 years?
- Lithium-ion batteries have a longer lifespan compared to traditional lead-acid batteries. Under normal usage and maintenance conditions, a lithium-ion battery can last between 8-15 years. However, the actual lifespan of a lithium-ion battery will depend on several factors such as how it is being used, how it is being stored, the environment it is in, and the quality of the battery itself.
For example, if a lithium-ion battery is used in a deep-cycle application (such as marine or RV use) where it is frequently discharged and recharged, it will have a shorter lifespan compared to a lithium-ion battery used in a less demanding application. Similarly, if a battery is stored in an environment that is too hot or too cold, it will degrade more quickly.
Also, Quality of the battery also plays a major role in determining its lifespan. A high-quality lithium-ion battery that is well-maintained and used in appropriate conditions is likely to last longer than a lower quality battery.
In any case, lithium-ion batteries have a longer service life than lead-acid batteries and are generally considered more reliable and durable. Some manufacturers even provide a warranty on the battery for a certain period.
- Can you charge a lithium marine battery with a regular charger?
- It is not recommended to charge a lithium marine battery with a regular charger, as regular chargers are typically designed for lead-acid batteries and may not have the appropriate charging profile for lithium-ion batteries. Lithium-ion batteries require a different charging voltage and current compared to lead-acid batteries, and using a regular charger may lead to overcharging or undercharging, which can shorten the battery's lifespan or even cause damage.
Lithium-ion batteries require a specific charging algorithm and voltage, which is usually provided by a lithium-ion battery charger. These chargers are specifically designed to charge lithium-ion batteries and are often equipped with features such as temperature sensing, overcharge protection, and automatic shut-off. Using a charger that is specifically designed for lithium-ion batteries will help ensure optimal performance and longevity of the battery.
It is also important to note that different types of lithium-ion batteries have different charging parameters, so it is essential to use a charger that is specifically designed for the type of lithium-ion battery you have.
Copyright © 2023 KET Battery. All Rights Reserved.