
LiTime | 12V 400Ah LiFePO4 8D Deep Cycle Lithium Battery
12V 400Ah LiFePO4 8D Deep Cycle Lithium Battery – Reliable Power for Solar, RV, Marine & Backup Systems
Upgrade your energy system with the 12V 400Ah LiFePO4 8D Deep Cycle Lithium Battery—a high-capacity, maintenance-free power solution engineered for long-lasting performance in solar setups, RVs, marine vessels, and home backup systems.
Designed with advanced LiFePO₄ prismatic cells, this 8D-size battery delivers exceptional thermal stability, safety, and a cycle life exceeding 4,000 cycles. Its built-in intelligent Battery Management System (BMS) provides comprehensive protection from overcharging, over-discharging, short circuits, and thermal extremes—ensuring reliable performance and a longer lifespan.
Whether you're going off-grid, cruising on a boat, or preparing for power outages, this 12V 400Ah LiFePO4 8D battery offers dependable, lightweight, and eco-friendly power that outperforms traditional lead-acid alternatives.
Key Features of the 12V 400Ah LiFePO4 8D Deep Cycle Lithium Battery
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High 400Ah Capacity: Extended energy storage for demanding applications like solar power systems, RVs, and off-grid cabins
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8D Battery Format: Industry-standard size for easy replacement and high-capacity configurations
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LiFePO₄ Prismatic Cells: Superior safety, chemical stability, and longer lifespan compared to lead-acid and standard lithium cells
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Integrated Smart BMS: Offers advanced protection against over-voltage, under-voltage, short circuits, and overheating
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Lightweight & Maintenance-Free: Easier to install and manage than bulky lead-acid batteries, with zero maintenance required
One Solution to Power All Your Needs
With an immense 5120Wh capacity provided by premium EV Grade-A cells, one 12V 400Ah battery equals 4* 12V 100Ah LiFePO4 batteries in parallel. You can have peace of mind knowing its energy is always smooth and safe and will last for 10 years to come.
Top EV LiFePO4 Cells
LiTime 12V 400Ah battery powers your life safely and sustainably through top EV Grade-A Lithium Iron Phosphate cells. It can be charged up to 4000+ times at 100% DOD over 10+ years of high performance.
250A BMS Safeguards Your Battery
With LiTime's upgraded 250A Battery Management System, you can trust your battery is thoroughly safeguarded. Advanced protections shield against overcharge, over-discharge, overheating(167℉), overcurrent (250A) and short circuit. Advanced BMS has your battery and our environment's best interests at heart.
Up to 81.92kWh Energy
With LiTime 12V 400Ah LiFePO4 batteries expanded to a 4P4S battery system. Unlock a massive 81.92kWh of versatile energy and say goodbye to limitations. You can customize your power solution perfectly by combining multiple units. Have the flexibility to add more capacity whenever life demands it.
Unbeatable Advantages Over Lead-Acid Batteries
Compared with lead-acid batteries, the LiTime 12V 400Ah lithium battery simply can't be beat for ease and portability. Weighing just 86 lbs is 1/3 the weight of equivalent lead acid batteries. Power your home, cabin, RV or worksites without stressing over heavy lifting or space constraints.
Tailored Energy Companion on Life's Adventures
As a versatile and durable energy partner, the powerful LiTime 12V 400Ah LiFePO4 battery seamlessly fuels all your indoor and outdoor needs. Power solar houses or boats, fuel RVs or backup home power with ease.
Faster Charging Efficiency
The LiTime charges at 1C speed to give you continuous power.
Unlike outdated lead-acid batteries with 0.1C charging speed, the LiTime accepts charges from solar, alternators, generators or other LiFePO4 batteries without constraints.
One-Step Power Solution
Don't have to worry about compatibility and complex power assemblies. The LiTime 12V 400Ah battery simplifies setup with a streamlined one-step solution. Just install it and watch the juice flow.
Specification
- Cell Type: LiFePO₄ Prismatic
- Nominal Voltage: 12.8V
- Rated Capacity: 400Ah
- Energy: 5120Wh
- Cycle Life: 4000+ cycles (@100% Depth of Discharge)
- Charging Voltage: 14.6V
- Standard Charging Current: 80A
- Max Charging Current: 120A
- Max Continuous Discharge Current: 400A
- Peak Discharge Current (5 sec): 800A
- Discharge Cut-off Voltage: 10.0V
- Operating Temperature (Charge): -4°F to 122°F (-20°C to 50°C)
- Operating Temperature (Discharge): -4°F to 140°F (-20°C to 60°C)
- Storage Temperature: -10°C to 50°C
- Weight: Approx. 88.2 lbs (40 kg)
- Dimensions (L×W×H): 20.87 × 10.83 × 8.66 in
- Terminal Type: M8
- BMS Integrated: Yes
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Most orders ship within 1–3 business days. You’ll get a tracking number as soon as it ships via email!
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Are Products Brand New?
Yes! All products on Solar Guys Pro are 100% brand-new and in perfect condition.
We do not sell any used or refurbished items.

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Frequently Asked Questions

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