12V 400Ah Lithium Battery - OEM Factory in China

12V 400Ah Lithium Battery (Group 8D)

• Cell: LiFePO4 (LFP)
• MOQ: 5
• Delivery: 20 Days
• Customizable / OEM / ODM: Yes
• Factory: Redway, Huizhou, Guangdong, China
• Delivery Terms: FOB, EXW, CIF
• Payment: T/T, L/C, PayPal
• Sea / Air / Land Shipment: 10FT, 20FT, 40FT, 60FT

Description

Meet the Redway Power 12V 400Ah Lithium Battery, designed for high-capacity energy storage in demanding applications like off-grid power solutions, RVs, and marine use. Utilizing advanced LiFePO4 technology, this robust battery delivers exceptional performance and reliability, making it an ideal choice for OEM, ODM, and wholesale buyers.

Key Features:

High Capacity: With a nominal capacity of 400Ah and energy output of 5.12kWh, this battery is perfect for powering larger systems and appliances.
Long Cycle Life: Designed for over 4000 cycles at 80% Depth of Discharge (DOD), ensuring longevity and cost-effectiveness.
Wide Operating Temperature Range: Functions efficiently in temperatures from -20°C to 60°C, suitable for various environments.
Advanced Battery Management System (BMS): Provides protection against overcharge, over-discharge, and short circuits for enhanced safety.
Customizable Options: Available for OEM/ODM projects, allowing tailored specifications to meet your unique requirements.

Product Description:

The Redway Power 12V 400Ah Lithium Battery is engineered for those who require reliable and efficient energy solutions in a high-capacity format. With a nominal voltage of 12.8V, this battery features premium LiFePO4 cells that ensure safety and stability. Its dimensions of 523 x 269 x 218 mm (20.6 x 10.6 x 8.6 inches) and weight of approximately 39 kg make it suitable for various applications including RVs, marine vessels, and solar systems.

This battery supports a maximum continuous charge and discharge current of 100A, making it ideal for high-demand situations. The robust construction features an IP65 rating, providing protection against dust and water ingress. Optional functions such as Bluetooth connectivity and an LCD display allow for enhanced monitoring and customization.

Backed by a design life of up to 10 years and compliance with multiple certifications including UL, CE, and RoHS, the Redway Power 12V 400Ah Lithium Battery stands as a trustworthy choice for automotive, renewable energy, marine, and backup power applications. Whether you’re looking to stock up for wholesale distribution or seeking custom solutions for your brand, this battery is your go-to option for superior performance and reliability in the energy sector.

Specifications

12V400Ah	Specifications
Cell Type	LiFePO4 (LFP)
Nominal Voltage	12.8V
Nominal Capacity	400Ah
Nominal Energy	5.12kWh
Max Charge Voltage	14.6V
Discharge Cut-off Voltage	10V
Max Continues Charge Current	100A
Max Continues Discharge Current	100A
Dimensions [L x W x H]	523 x 269 x 218 mm (20.6 x 10.6 x 8.6 inches) Group 8D
Weight	~39kg
IP Rating	IP65
Max Parallel	4
Cycle Life	>4000 cycles (DOD 80%)
LCD Display	Yes (SOC)
Charge Temperature	0°C ~ 60°C
Discharge Temperature	-20°C ~ 60°C
Optional Functions	Bluetooth / APP / WiFi / 4G / GPS / Self-heating / RS485 / CAN-bus / RS232 / Active Balance /etc.
Charger	Optional
BMS	Over current / Over charge / Over discharge / Overload / Over voltage / Low voltage / Overheat / Over temperature / Low temperature / etc.
Terminal	M8
Battery Case	ABS
Design Life	10 Years
Silkscreen / Label / Laser Logo	Yes
User Manual	Yes
Customization / OEM / ODM	Yes
Certifiaction	UL 1642 / IEC 62133 / CE / RoHS / UN38.3

Applications and FAQs

China OEM Market & Certifications

What is China OEM Group 8D lithium battery market position?
China dominates the global OEM market, supplying 60%+ of Group 8D lithium batteries. Chinese manufacturers offer 40-60% cost savings versus Western brands while maintaining comparable quality through automated production and strict quality control.

What certifications do China OEM 8D lithium battery manufacturers hold?
Essential certs include UN38.3, CE, and IEC 62619. Marine versions add DNV-GL, while industrial models require UL 1973. Top factories maintain ISO 9001 and IATF 16949 for automotive-grade quality.

What innovations drive China OEM 8D lithium battery technology?
Recent advances include modular designs, self-heating cells, and AI-powered BMS. Energy density improves 5-7% annually through nanomaterial electrodes and stacking process optimization.

Pricing & Budgeting

What is the average 12V 400Ah lithium battery price?
Wholesale prices range $1, 200 -$ 2,500 depending on quality. Grade A cells with smart BMS cost $1, 800 + * *, w hi l e b u d g e t o pt i o n ss t a r t a t * *$ 1,200. Bulk orders (10+) typically qualify for 10-25% discounts.

Which brands offer affordable 12V 400Ah lithium batteries?
Value leaders include Ampere Time, SOK, and Chins. These offer 80% of premium features at 60-70% of the cost, with 3-5 year warranties and basic BMS protection.

How to budget for a 12V 400Ah deep cycle battery?
Allocate $1, 500 -$ 2,000 for quality batteries, plus $200 -$ 500 for compatible charger and installation accessories. Factor in 5-10 year lifespan for lower TCO versus lead-acid.

Customization & Shipping

Can I customize voltage and capacity requirements?
Yes, most OEMs offer voltage adjustments (12V-48V) and capacity tweaks (±20%). Custom BMS programming, connectors, and casings are available at 50-unit MOQs, with 2-3 week lead times.

What advantages do they have over lead-acid batteries?
Key benefits include 3x lifespan, 50% weight reduction, and 5x faster charging. Unlike lead-acid, they allow 100% DoD, need zero maintenance, and have stable voltage output.

Shipping time and cost to major countries?
Sea freight takes 4-6 weeks ( $800 -$ 2,000/container), while air shipping costs $5 -$ 10/kg (7-10 days). Hazardous fees add 15-20%. Many suppliers offer DDP terms for easier import.

Technical Specifications

What is a Group 8D lithium battery?
Group 8D refers to standardized dimensions (L20.7×W8.9×H9.8 inches) for high-capacity batteries. Lithium versions provide 300-400Ah capacity at 60% less weight than lead-acid, with 5000+ cycles at 80% DoD.

How long do Group 8D lithium batteries last?
Lifespan averages 10-15 years with 80% capacity retention after 4000+ cycles. Proper maintenance (avoiding full discharges) can extend this to 5000+ cycles in moderate climates.

What safety features do Group 8D lithium batteries have?
Standard protections include overcurrent cutoff, thermal sensors, and cell balancing. Marine versions add waterproof casings (IP67) and vibration-resistant mounting for harsh environments.

Certification Details

What are key international 400Ah lithium battery certifications?
Essential certs are UL 1973 (safety), IEC 62619 (performance), and UN38.3 (transport). EU markets require CE and RoHS, while marine needs DNV-GL and ABYC TE-13.

How does certification address thermal runaway in 400Ah batteries?
Testing protocols include nail penetration, oven thermal, and overcharge tests. Certified batteries must contain fires and prevent cascading failures for 30+ minutes under extreme conditions.

What standards govern 400Ah lithium battery transportation safety?
UN38.3 mandates vibration, shock, and altitude tests. Shipping requires 30% SOC max, UN-approved packaging, and hazardous cargo documentation via DG-certified carriers.

Performance & Maintenance

What factors affect 12V 400Ah lithium battery lifespan?
Key factors are charge cycles, depth of discharge, and operating temperature. Avoiding full discharges, extreme heat, and incompatible chargers can double usable lifespan.

How to optimize charging for 400Ah lithium battery longevity?
Use LiFePO4-specific chargers with temperature compensation. Maintain 20-80% SOC for daily use, with monthly full charges for balancing. Never charge below 0°C without battery heating systems.

What applications benefit most from long-lasting 400Ah batteries?
Best matches are off-grid solar, marine trolling, and RV power systems. The high capacity supports 3000W+ loads for 8-12 hours, ideal for energy-intensive mobile applications.