
12V400Ah Lithium Battery for Trailers, Campers, Boats, and RVs
The 12V lithium-ion battery pack serves three major applications:
First Application: Ideal for high-capacity electric power supply in trailers, camper vans, motorhomes, and boats.
Second Application: An excellent replacement for traditional lead-acid batteries in electric tricycles, low-speed electric cars/trucks, electric golf carts, sanitation trucks, sweepers, scrubbers, and arm gates.
Third Application: Efficient energy storage for electricity generated by solar panels or windmills.
Long Cycle Life: Our lithium batteries boast a long cycle life, enduring over 4000 charge and discharge cycles with minimal performance loss. Perfect for long-term use in trailers, campers, RVs, and boats.
Fast Charging Capability: Our lithium batteries support rapid charging, ideal for quickly recharging trailers and boats while docked, reducing downtime and boosting efficiency.
Intelligent Management System: Equipped with intelligent battery management systems, these batteries monitor status, optimize charging/discharging processes, and offer remote monitoring and management functions. This ensures safe operation, extends battery life, and enhances system performance.
High Adaptability: Thanks to their lightweight and compact size, our 12V batteries can easily replace most lead-acid batteries in various applications.
We produce energy storage battery packs in various capacities including 12V50Ah, 12V80Ah, 12V100Ah, 12V150Ah, 12V200Ah, 12V300Ah, 12V400Ah, and 12V500Ah. They can also be used in parallel and series configurations for versatile energy solutions.



We proudly export our cutting-edge batteries to a diverse array of nations, including the USA, Canada, Mexico, Brazil, Germany, Japan, Hong Kong, Vietnam, Turkey, France, Poland, and Indonesia.
Our esteemed company boasts an experienced and enthusiastic R&D team, brimming with exceptional expertise and innovative prowess in battery technology and materials science. Through relentless research and development, we consistently unveil high-performance, ultra-safe, and exceptionally reliable lithium-ion battery products, meticulously crafted to cater to diverse sectors such as electric vehicles, energy storage systems, consumer electronics, and industrial equipment.
As a conscientious enterprise, we place paramount importance on product quality and environmental sustainability. We rigorously comply with international standards, leveraging state-of-the-art production processes and stringent quality control measures to ensure our products epitomize the zenith of quality. Concurrently, we champion sustainable development by integrating eco-friendly materials and production methodologies to significantly mitigate environmental impact.
We have forged enduring partnerships with our clients, delivering bespoke solutions and unparalleled after-sales service. Our stellar reputation spans both domestic and international markets, fostering collaborations with global partners to collectively advance clean energy technology.
Jiangsu Surelithium New Energy Technology Co., Ltd. aspires to ascend as a global leader in the new energy arena, offering dependable energy solutions to customers worldwide through relentless technological innovation and superior quality. We ardently invite partners and customers to join us in crafting a future powered by clean energy.



What is the regular lead time after I place my order?
We are a factory specializing in make-to-order solutions. Typically, sample orders take about 15-20 days, while batch orders require approximately 25-30 days. The lead time varies based on order quantities and capacities. If necessary, we can expedite the process to meet urgent deadlines.
What are your trade terms and payment terms?
We accommodate a variety of common trade terms, including EXW, FOB, CIF, DDU, etc.
For orders to be processed, we generally require a minimum of 30% advance payment. The remaining 70% must be settled upon acceptance of the finished products and prior to delivery. We also accept irrevocable L/C at sight.
What kind of shipping methods do you provide?
Considering that lithium-ion batteries are classified as Class 9 Dangerous Goods, we strongly recommend shipping all batteries via sea freight for safety and compliance reasons.
Do you provide warranty, if yes, how long?
Yes, we offer a standard three-year warranty for all our battery packs. Buyers can request an extended warranty period before placing orders. Please inquire about the 'Terms and Conditions of the Warranty' beforehand.
What are the application fields of your battery packs?
We supply Li-ion battery packs for a wide range of applications: electric vehicles (4-wheeled and 3-wheeled trucks, sweepers, cars, forklifts, golf carts, sightseeing buses, monorails, ATVs, UTVs, tricycles, motorcycles, toy cars, etc.), solar energy power storage, electric equipment (floor scrubbers, lifting platforms, small excavators, tractors, pallet stackers, grass cutters, small cranes, garbage tanks, arm gates, etc.), outdoor portable power supplies, portable power for construction equipment, streetlight power packs, boat power packs, camper power packs, and more.
As a customization-oriented Li-ion battery manufacturer, we welcome customizations for various applications.
Can your batteries be used in series?
Most of our batteries are not designed to be used separately. However, we offer small 12V battery modules that can be used in series or parallel, ideal for replacing old lead-acid batteries. Please inquire in advance for specifics.
Do your batteries have a thermal management system?
Yes, most of our batteries are equipped with a thermal management system controlled by the BMS (Battery Management System). This system prevents battery use under extreme temperatures. Please inquire for more details.
Do you provide OEM or ODM.
Yes.
How many years will your battery last?
Lithium Iron Phosphate (LiFePO4) batteries can be cycled 2000 to 5000 times. If cycled daily at 80% DoD (Depth of Discharge), you can expect a lifespan of 5-10 years.
How do I install your batteries?
All our batteries come with free ring terminals for easy connection to your inverter, cart, or busbar system.
Can I leave your batteries outside?
No. Our batteries are not rated for marine or weatherproof conditions. Exposure to the sun or rain can cause damage, which is not covered under the warranty.