12V 300AH Marine Batteries
• MOQ: 10
• Delivery: 25 Days
• Customizable / OEM / ODM: Yes
• Delivery Terms: FOB, EXW, CIF
• Payment: T/T, L/C, PayPal
• Sea / Air / Land Shipment: 10FT, 20FT, 40FT, 60FT
Category Page：72V batteries Forklift Batteries
PRODUCT CATEGORIES
Product Overview
The 12V 300AH Marine Batteries are designed to provide stable, high-capacity power for marine electrical systems operating under demanding conditions. Engineered for professional marine environments, this battery solution supports extended runtime, continuous loads, and long service life, making it suitable for commercial fleets, marine integrators, and OEM projects.Key Features & Benefits
High 300Ah capacity supports extended operating hours for onboard systems.12V platform compatibility for widely used marine electrical architectures.
Designed for deep-cycle operation with consistent discharge performance.
Excellent resistance to vibration, humidity, and saltwater exposure.
Maintenance-free design reduces service requirements and downtime.
Optimized for long-term reliability in professional marine applications.
Technical Specifications
Nominal Voltage: 12VRated Capacity: 300Ah
Battery Type: Deep-cycle lithium marine battery
Cycle Life: Designed for repeated deep discharge cycles
Battery Protection: Integrated protection for voltage, current, and temperature
Charging Compatibility: Marine-grade 12V charging systems
Operating Environment: Marine and offshore conditions
Applications
This battery solution is widely used in commercial boats, workboats, yachts, patrol vessels, and offshore support platforms. Typical applications include navigation electronics, communication systems, lighting circuits, auxiliary power systems, and onboard energy storage.Comparison / Advantages
Compared with conventional lead-acid marine batteries, 12V 300AH Marine Batteries deliver longer service life, higher usable capacity, and improved energy efficiency. Compared with lower-capacity 12V options, this configuration provides extended runtime and reduced charging frequency for professional marine operations.Certifications & Quality
Manufactured under strict quality management systems.Designed to meet marine electrical safety and durability standards.
Each battery undergoes electrical, mechanical, and environmental testing prior to delivery.
OEM & Customization
OEM and ODM services are available, including customized enclosures, connectors, communication interfaces, and branding. We support tailored solutions for (OEM marine battery) programs serving global marine equipment manufacturers and fleet operators.CTA
Request a quotation for 12V 300AH Marine Batteries or contact us to discuss OEM customization and bulk supply for marine power projects.| Specifications | ||||
| Lithium Cell Type | LiFePO4 | |||
| Nominal Voltage | 12.8V | |||
| Nominal Capacity | 300Ah | |||
| Nominal Energy | 3840Wh | |||
| Max Charge Voltage | 14.6V | |||
| Discharge Cut-off Voltage | 10V | |||
| Max Continues Charge Current | 200A | |||
| Max Continues Discharge Current | 200A | |||
| Standard Continues Charge Current | 25A | |||
| Standard Continues Charge Current | 25A | |||
| Dimensions(L x W x H) | 523 x 269 x 218 mm | |||
| Weight | 25 kg | |||
| Charger | 14.6V 20A | |||
| Cycle Life | >4000 cycles (DOD 80%) | |||
| Internal Resistance | ≤30mΩ | |||
| Max Series Connections | 4 | |||
| Max Parallel Connections | 4 | |||
| Self-discharge | ≤2% per month | |||
| IP Rating | IP65 | |||
| Charge Temperature | 0°C ~ 60°C | |||
| Discharge Temperature | (-20°C ~ 65°C) | |||
| Storage Temperature | (-10℃ ~ 50℃) | |||
| Self-heating | Optional | |||
| LCD Display | Optional | |||
| Optional Upgrades | Self-heating / Bluetooth / APP / WiFi / 4G / GPS / LCD Display / RS485 / RS232 / CAN bus / RJ45 / Modbus / Power Switch / Circuit Breaker / Active Balance / etc | |||
| BMS | JBD BMS/JK BMS | |||
| Terminal | M8 | |||
| Battery Case | ABS | |||
| Design Life | 10 Years | |||
| Silk-screen / Label / Laser Logo | Yes | |||
| User Manual | Yes | |||
| OEM / ODM | Yes | |||
| Certifications | CE / MSDS / UN38.3/UL | |||
Frequently Asked Questions (FAQs)
What types of vessels commonly use this battery capacity?
Commercial boats, patrol vessels, workboats, and offshore support vessels.
Is this battery suitable for deep-cycle marine use?
Yes, it is designed for repeated deep discharge and recharge cycles.
Can it replace traditional lead-acid marine batteries?
Yes, it is commonly used as a replacement with compatible charging systems.
Does it support continuous onboard electrical loads?
Yes, it provides stable output for continuous marine power demands.
Is the battery resistant to vibration and marine environments?
It is designed to withstand vibration, humidity, and salt exposure.
What charging system is recommended?
A compatible marine-grade 12V charger is recommended.
Can specifications be customized for OEM projects?
Yes, electrical and mechanical customization is supported.
Do you support bulk supply for commercial fleets?
Yes, bulk orders and long-term supply agreements are available.
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