Marine Deep Cycle Battery – Custom & Wholesale from China
Hongyitai is a professional marine battery factory in China, specializing in providing high-quality deep cycle battery wholesale and custom services to global brand owners, wholesalers, and marine assembly plants. We produce a full range of safe and stable lithium iron phosphate batteries.
Whether used in commercial fishing vessels, luxury yachts, or electric propulsion systems, our lithium marine batteries deliver continuous and powerful performance. We offer comprehensive OEM ODM solutions, customizing voltage, capacity, casing size, and waterproof rating to meet your specific specifications, helping you sell your marine products.
Ensures the reliability and safety of the battery when used on a boat, including waterproofing.
Provides stable power output over a long period, supplying power to various onboard appliances.
Can be used for starting the engine and providing long-term power supply.
LiFePO4 batteries require no maintenance, no need to add water.
Hongyitai Different Lithium Marine Battery Types for Sale
To meet the needs of various ships, trolling motors, and marine energy storage systems, Hongyitai develops and manufactures a variety of lithium marine batteries, all using high-energy-density LiFePO4 cells and a smart BMS to support high-rate discharge and charging. Below are some basic parameters of our marine batteries.
28.8V 34.3Ah Marine Battery
Nominal voltage: 28.8V
Nominal capacity: 34.3Ah
Rated energy: 996Wh
Recommend charge current: ≤10A
Peak discharge current: 80A
Max load power: 1452W
51.2V 100Ah Marine Battery
Nominal voltage: 51.2V
Nominal capacity: 100Ah
Rated energy: 5222.4Wh
Recommend charge current: ≤30A
Max discharge current: 80A
Max load power: 4096W
102.4V 150Ah Marine Battery
Nominal voltage: 102.4V
Nominal capacity: 150Ah
Rated energy: 15360Wh
Recommend charge current: ≤40A
Max discharge current: 350A
Max load power: 25600W
72V 108Ah Marine Battery
Nominal voltage: 72V
Nominal capacity: 108Ah
Rated energy: 8294.4Wh
Recommend charge current: ≤40A
Max discharge current: 350A
Max load power: 23040W
57.92V 58Ah Marine Battery
Nominal voltage: 57.92V
Nominal capacity: 58Ah
Rated energy: 3359Wh
Recommend charge current: ≤58A
Max discharge current: 250A
Max load power: 9846.4W
74.6V 95Ah Marine Battery
Nominal voltage: 74.6V
Nominal capacity: 95Ah
Rated energy: 7087Wh
Recommend charge current: ≤50A
Max discharge current: 350A
Max load power: 18650W
76V 58Ah Marine Battery
Nominal voltage: 76V
Nominal capacity: 58Ah
Rated energy: 4408Wh
Recommend charge current: ≤50A
Max discharge current: 220A
Max load power: 15200W
72V 80Ah Marine Battery
Nominal voltage: 72V
Nominal capacity: 80Ah
Rated energy: 6220.8Wh
Recommend charge current: ≤40A
Max discharge current: 220A
Max load power: 15360W
Marine Starting Batteries Features
Our marine starting batteries meet the stringent current requirements of marine outboard and inboard engines, delivering a stable starting current of up to 800-1200A within seconds.
Our advanced BMS enables dual-purpose functionality: powerful starting capability and deep cycle life, continuously powering onboard sensors, GPS, audio, and lighting systems.
Our marine starting batteries can distinguish between peak engine starting current and actual circuit current, allowing for instantaneous high current flow.
All our marine batteries feature laser welding, strapping for secure fastening, and a robust outer casing with PI65 high-strength vibration resistance; simultaneously, they weigh only one-third of equivalent lead-acid batteries, reducing stern weight and increasing boat speed.
Best Rated High-Cranking LiFePO4 Marine Starting Batteries
By optimizing cell structure and discharge rate, we enable high-cranking LiFePO4 batteries to instantly release enormous energy, matching the demands of high-horsepower engines.
1000A – 1400A Peak Current: High-horsepower outboard motors. Unlike ordinary protection boards, our marine battery supports 1000A peak cranking Amps, allowing your high-horsepower Mercury, Yamaha, or Suzuki engines to start instantly.
Perfectly compatible with Mercury marine specifications. Our 12V LiFePO4 marine starting batteries are developed strictly according to international standards. Their continuous discharge current, peak pulse current, and charging voltage match the engine’s output requirements, eliminating compatibility concerns.
5X Fast Charging. Unlike bulky AGM or lead-acid batteries, it reduces weight by 70%.
Smaller size, conforming to group 24, 27, and 31 battery dimensions. 5X charging speed allows for rapid full charging.
Lithium vs. Lead Acid Marine Battery: Which is Better?
Lithium vs. lead-acid battery: This is often the most common choice. Traditional lead-acid batteries have a lower initial price, but LiFePO4 batteries offer better value for money. Here’s a comparison:
Deep Discharge and Usable Capacity: Lead-acid batteries have a maximum safe depth of discharge (DOD) of only 50%, while our lithium marine batteries support 80%-100% DOD. One 100Ah lithium battery has the practical usable capacity equivalent to two 100Ah lead-acid batteries.
Cycle Life and ROI: Traditional marine lead-acid batteries have a cycle life of only 300-500 cycles, requiring replacement every 1-2 years; marine deep cycle batteries boast an ultra-long cycle life of 3000-5000 cycles at 80% DOD. Their lifespan can exceed 10 years.
Weight, Volume, and Boat Weight Distribution: The weight of a boat directly affects fuel consumption and speed. For the same capacity, the lithium marine battery weighs only one-third of a lead-acid battery and is also much smaller in size.
Intelligent Management and Safety: Lead-acid batteries lack self-protection mechanisms and are prone to overcharging, over-discharging, and even acid leakage. The LFP battery BMS can prevent overcharging, over-discharging, short circuits, overcurrent, and overtemperature.
The Best Voltage Marine Battery for Trolling Motor for You
In marine fishing and lure fishing, trolling motors are indispensable equipment. However, you may be confused by the voltage (12V, 24V, 36V, and 48V) selection. The correct voltage depends on the motor’s thrust, boat size, and range. Below is a summary of the best voltage and capacity configurations for different trolling motors, allowing you to quickly obtain OEM ODM solutions.
12 Volt Lithium Marine Battery
Suitable for entry-level boats with thrust between 30 lbs and 55 lbs: kayaks, canoes, and small inflatable boats. The most commonly used are 12V 50Ah and 100Ah batteries, weighing 11Kg, which are ideal for boats sensitive to ballast and fit perfectly into standard group 24/31 battery compartments.
24 Volt Lithium Marine Battery
Designed specifically for heavy-duty mid-mounted motors with thrust between 70 lbs and 80 lbs, these motors are commonly used in 16-19 inch lure boats, fiberglass fishing vessels, and medium-sized offshore workboats. They typically use 24V 50Ah and 100Ah batteries, which reduces wiring by 50%, lowering assembly time and failure rates in assembly plants.
36 Volt Lithium Mamine Battery
Designed for top-of-the-line high-thrust front-mounted motors with thrust ranging from 101 lbs to 112 lbs and above, suitable for large vessels over 20 feet and deep-sea fishing boats. 36V 50Ah and 100Ah, 60kg lighter than traditional lead-acid batteries, effectively improving speed and fuel efficiency.
Marine Battery Terminal & Charger Compatibility Guide
Beyond voltage and capacity, hardware compatibility is crucial for project success and after-sales service. Incompatible terminals can lead to high impedance or even burnout; while incorrect chargers can directly damage the battery or trigger BMS protection. We support comprehensive hardware customization to ensure your battery seamlessly integrates into your existing marine propulsion system.
These are the most commonly used battery terminals: M8/M6 threaded inserts are compact and flat, ideal for tight cabin spaces. SAE post terminals offer direct replacement without modification, allowing you to easily connect them to your original marine wiring harness. Dual marine posts include a SAE cylinder and a threaded steel bolt, supporting simultaneous connection of high-current engine start cables and lightweight cables for auxiliary equipment such as fish finders.
We can provide professional chargers with constant current/constant voltage CC/CV modes, ensuring 100% battery charge and effectively extending cycle life. We do not recommend using older lead-acid chargers.
Why Choose Hongyitai as Your Trusted Marine Lithium Battery Manufacturer?
We have long provided OEM/ODM services to globally renowned marine brands. Here are Hongyitai’s biggest advantages:
1. 100% Automotive-Grade A Cells and Self-Developed Smart BMS. We promise that all our marine deep cycle batteries use brand-new Grade A LiFePO4 cells from industry giants (EVE, CATL), never using any Grade B or salvaged cells. All protection boards undergo high humidity, high salt spray, and turbulence testing, and feature overcharge, over-discharge, short circuit, temperature protection, and automatic balancing functions.
2. Stringent Marine Environmental Testing System. Before shipment, all batteries undergo rigorous QC testing, high-frequency shock resistance testing, salt spray corrosion testing, and 100% aging testing.
3. Flexible and Excellent OEM/ODM Customization Capabilities. We support embedding your own brand logo on the battery casing, packaging box, and even the smartphone Bluetooth app interface.
4. Complete International Export Certifications. Our marine batteries have passed UN38.3, CE, FCC, RoHS, MSDS and other certifications, and the cells comply with IEC62619 standards.
FAQs for marine lithium battery
Our minimum order quantity (MOQ) is very flexible, usually 10-20 sets, which is convenient for small and medium-sized wholesalers to conduct their first order test.
We offer UN38.3, MSDS, CE, RoHS and UL 1642 certifications.
Standard sample orders take 5-7 days, while wholesale orders typically take 15-20 days.
Yes, that's one of our factory's core strengths. We can customize flame-retardant plastic shells that meet international standards, such as Group 24, Group 27, Group 31, Group 4D, and Group 8D, to create battery boxes with true IP67 or even IP68 waterproof ratings.