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The like-new batteries were purchased by customers who mistakenly bought the wrong capacity or incompatible batteries for their applications. We assure you that our batteries are thoroughly checked and tested before delivery ( only a few have minor scratches on the surface). May be missing accessories (e.g., user manual, bolts). Please contact us directly with any questions prior to purchase.
One 12V 400Ah Battery to Be Your Final Solution
Unlock Energy with the LiTime 12V 400Ah LiFePO4 Battery
The LiTime 12V 400Ah battery provides reliable, long-lasting energy storage. Its large 400Ah capacity makes it ideal for residential, recreational, off-grid and commercial solar applications that require clean, renewable energy solutions.
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.
Reliable and Unbeatable Service
Enjoy responsive online and phone assistance from our expert technical staff. Receive helpful feedback within 24 hours to quickly resolve any issues. Batteries are shipped efficiently within 2-5 business days of order from local warehouses across Australia.
Trusted Power for Every Journey
Yes. LiFePO4 is an inherently safe chemistry and the most stable lithium-type battery on the market. LiTime lithium cells are UL certified for the highest safety and sustainability standards. All LiTime LiFePO4 batteries come with an internal Battery Management System which protects against under-voltage during discharge, over-voltage during charge, over-current during discharge, over-temperature during charge and discharge, and short-circuit protection – protects battery cells from damage. Additionally, LiTime LiFePO4 Lithium batteries have been tested to be free from the risk of fire, and electric shock in harsh environments.
The runtime of our 12V 400Ah battery depends entirely on the power draw (watts) of the appliances you connect. With a massive 5120Wh of usable energy, it can power your essential devices for hours or even days.
Here are some real-world examples based on continuous use:
Quick Tip: To estimate the runtime for your own devices, use this simple formula:
Runtime (in hours) = 5120 / (Wattage of your device)
No. LiTime LiFePO4 lithium batteries are not intended to be used as starting batteries but energy storage, please do not use them to start any devices.
Our 12V 400Ah battery is designed for flexible charging. There are three primary ways to charge it, all of which require a charger compatible with LiFePO4 chemistry.
1. Solar Panels
Yes, you can charge your battery using the sun. A quality MPPT solar charge controller is required to manage the power safely and efficiently.
2. Vehicle Alternator or Generator
You can charge on the go or with backup power.
3. LiFePO4 Smart Charger (Standard AC Outlet)
This is the most direct method. Simply connect a dedicated LiFePO4 smart charger to the battery and plug it into a standard wall outlet.
For methods 2 and 3, use a charger with the following settings for optimal performance and speed:
Please be aware that this 400Ah model does not featured low-temp protection and should only be charged when the battery's temperature is above 32°F (0°C). Charging in freezing temperatures will damage the cells. On cold days, the best practice is to bring the battery indoors to charge.
For Charging in Freezing Temperatures: If your application requires charging in sub-zero weather (e.g., winter RVing, off-grid cabins), consider our LiTime 12V 280Ah Lithium Battery. The battery includes a built-in system (low-temperature charging off protection) that automatically manages charging in the cold, protecting your investment.
Proper storage is the key to ensuring your LiTime LiFePO4 battery delivers years of reliable performance. Follow these simple steps to protect your investment when the battery is not in use.
1. Aim for a 50% Charge
Before storing, bring your battery to approximately 50% State of Charge (SOC). Avoid leaving it fully charged or completely empty. For storage longer than three months, simply recharge it back to 50% every 3 months to keep the cells healthy and balanced.
2. Disconnect from Your System
Ensure the battery is completely disconnected from all chargers and devices (loads). This prevents "phantom drains" that can slowly deplete the battery and cause irreversible damage over time.
3. Find the Right Environment
Store your battery in a cool, dry, and stable location.
4. Keep it Protected
We recommend storing your battery in a battery box. This shields it from moisture, dust, and accidental impacts, ensuring it's in perfect condition when you need it next.
5. "Waking Up" After Storage
After a long storage period, it's best practice to "wake up" the battery with one complete cycle (a full charge followed by a full discharge) before putting it back into regular service.
Typical applications include RVs, marine vessels, solar home energy storage, off-grid power systems and industrial equipment.
Yes! You can significantly expand your power system by connecting multiple LiTime 12V deep cycle batteries. This allows you to increase voltage for more powerful equipment or increase capacity (Ah) for longer runtimes.
Here are your options:
For safety and performance, all connected batteries MUST meet these conditions:
