Custom Lithium Marine Battery Manufacturer in China
The two most common types of lithium marine batteries are deep-cycle lithium batteries and cranking lithium batteries. Deep-cycle batteries provide stable power for shipboard equipment (8-24 hours) and have deep discharge capabilities while adapting to long-term medium and low current discharge. Cranking batteries provide instantaneous high current to start the ship engine, ensuring rapid ignition. And support short-term high-power equipment operation.
VTCBATT can manufacture the above two types of lithium marine batteries, so that your ship can obtain sufficient power to operate on the water for a long time without long-term charging. At the same time, our lithium marine batteries have a sturdy and tight structure, are waterproof, and leak-proof. The BMS system features a high-temperature compensation mechanism, preventing both high-temperature overcharging and low-temperature lithium dendrite formation. It can also be customized with a Bluetooth application, so that you can quickly check the remaining power on your mobile device.
Whether you are a luxury yacht, ferry, fishing boat, or a special operation research vessel, customizing our lithium marine batteries is the best choice.
Lithium Marine Battery Model
Advantages of VTCBATT Lithium Marine Batteries
With the same capacity, the volume is 60% smaller than that of lead-acid batteries, and the weight is reduced by 70%, which can significantly improve the cargo.
The life of lithium iron phosphate (LiFePO₄) batteries is 10 years at 80% discharge depth, which is 5-10 times that of lead-acid batteries.
Supports full charge in 4 hours (lead-acid batteries take 8-12 hours), and energy can be replenished during port docking.
Although the initial cost is 2-3 times that of lead-acid batteries, the maintenance-free and long-life characteristics save 40-60% of the total cost over 10 years.
No heavy metals such as lead and cadmium, in compliance with the IMO 2020 sulfur limit and the EU Ship Recycling Regulations.
Recycling rate>95%.
Passed rigorous tests such as needle puncture and extrusion, equipped with an intelligent BMS to monitor temperature/voltage in real time.
Low-temperature performance: -20℃ capacity retention rate>85% (lead-acid battery capacity drops by 50% at 0℃).
High-temperature tolerance: No obvious attenuation of cycle life in a 60℃ environment.
Charge and use at any time; monthly self-discharge rate is less than 3% (lead-acid: 5-10%). It can still start quickly after long-term mooring.
Ultra-Lasting Marine Lithium Battery With Waterproof Casing
Meeting the rigorous standards for vibration,humidity and deep cycling, VTCBATT Marine lithium batteries feature internally injected with waterproof gel to resist vibration, an IP67 waterproof casing, and a smart BMS for protection.These design elements guarantee a safe power source for sailing, strong power output and ultra-long endurance.
Different Application Scenarios Of VTCBATT Lithium Marine Batteries
Ship Power SystemAll-electric propulsion
Replaces traditional diesel engines and is used in yachts, ferries, tugboats, etc., significantly reducing carbon emissions and noise pollution.
Hybrid auxiliary
Combined with traditional power systems, it optimizes fuel efficiency and reduces fuel consumption by 30%-50%.
Onboard Power SupplyLife electricity
Provides power for air conditioning, lighting, kitchen equipment, etc., in the cabin to support long-term offshore navigation.
Navigation and communication equipment
Provides stable power for key equipment such as radar, GPS, and radio to ensure navigation safety.
Emergency and Backup Power SupplyUninterruptible power supply (UPS)
Provides emergency power for key systems (such as steering gear and fire pumps) when the generator fails.
Safety system backup
Supports the continuous operation of life-saving equipment, emergency lighting, and alarm systems.
Special Operations and EquipmentTwo motor drives
Powers the electric towing motor of small fishing boats or leisure boats to improve maneuverability and quietness.
Scientific research and monitoring equipment
Sensors, underwater robots (ROVs), and data acquisition systems for marine research vessels.
Fishing applications
Support the automated operation of fishing equipment (e.g,. electric winches, freezer compartments).
Small boats
Voltage: 12v, Capacity: 20-100ah
Typical product: 12V 50AH, for powering small motors such as trolling motors.
7.4v 4,9ah, ultra-lightweight, for powering handheld devices.
Medium sailboats and yachts
Voltage: 12v-48v, Capacity: 100-600ah
Typical product: 12V 105Ah, for powering large equipment such as coffee machines, suitable for 2500W inverters.
48V 50AH supports 100A continuous discharge, suitable for electric outboard boats.
Large electric ships and speedboats
Voltage: 48v-350v, Capacity: 50-400ah
Typical product: 350V 50AH, continuous 2c discharge, peak 3c/10s, used for high-speed cabin power systems.
48v 100ah: suitable for electric outboard motors.
Special ships
Must have multiple protections, wide temperature adaptability, and anti-electromagnetic interference.
Typical products: 25.2V 40Ah (18650 battery), used for ship emergency equipment.
In general, 36V lithium batteries are more suitable than 12V.
Advantages of choosing 36V lithium batteries:
System simplification: Compared with three 12V series solutions, a single 36V battery reduces 67% of physical connection points, reduces the risk of line failure, and reduces maintenance costs.
Weight advantage: The 36V system is about 35% lighter than the equivalent 12V combination, which is conducive to ship weight optimization.
Space efficiency: A single battery saves 60% of installation space and is more suitable for cabin layout.
Performance matching: 36V systems are recommended for boats over 20 feet (about 6 meters) to better support high-power electric propulsion.
Scenario for choosing a 12V system:
Small boats: For small boats less than 5 meters, 12V systems can meet basic power needs.
Backup redundancy: When the compatibility requirements of existing 12V equipment are high, the voltage can be kept consistent.
Split power supply: More flexible when a separate power supply is required for different equipment (such as navigation and lighting).
Key decision factors:
Power demand: 36V system supports continuous high-load operation for more than 10 hours; 12V system is more suitable for intermittent use.
Budget considerations: The initial purchase cost of 36V is about 25% higher, but the life cycle cost is 30% lower.
Charging support: 36V requires a dedicated charger, and the 12V system has better compatibility.
Temperature control
The ideal storage temperature is 0-30℃ (32-86℉). Avoid extreme low temperature (<0℃) or high temperature (>40℃).
For long-term storage, the recommended temperature is kept at around 15℃ to delay battery aging.
Power management
Before storage, adjust the power to 30%-50%, avoiding full charge or deep discharge.
Check the voltage regularly (recommended once a month), and charge it in time if the voltage is lower than the safety threshold.
Environment and storage method
The storage area needs to be dry and ventilated, with a relative humidity of ≤60%, away from water and corrosive substances.
The battery should be placed upright to avoid stacking or tipping; it should be isolated from metal objects to prevent short circuits.
Store in fireproof and explosion-proof containers (such as metal boxes) or special battery cabinets equipped with heat insulation/insulating materials.
You can ask us to customize the matching charger for you when you customize our lithium marine batteries. If you don’t want to customize chargers from us, we have the following suggestions:
First, a dedicated lithium charger, preferably a charger marked with LiFePO4/Lithium compatible, which supports the voltage characteristics of lithium batteries (such as 12V/24V system).
Secondly, compatible AGM chargers. If the output voltage matches (such as a 12V lithium battery requires a charging range of 13.6-14.6V), some AGM chargers can be used temporarily, but dedicated lithium chargers are recommended for long-term use to optimize life.
Finally, a multi-channel intelligent charger that supports charging multiple groups of batteries at the same time.
The charging temperature should be controlled at 0-55℃, and the optimal range is 5-45℃.
Use a smart charger and keep the power level at 20%-80% to extend the life.
Do not mix old and new batteries or batteries of different models to prevent voltage imbalance.
Use shock-absorbing materials (such as foam pads) during installation to avoid severe vibration.
Ensure ventilation and heat dissipation during installation and avoid confined spaces; circuit connections must be waterproof and sealed.
Check the appearance of the battery (bulge, rust, leakage) and the tightness of the connectors every month.
Conduct a thermal runaway risk assessment and equip special fire-fighting equipment (such as Class A + Class D fire extinguishers).
