Proven and Cost-Effective Home Energy Storage
15kWh LiFePO₄ battery for home or business.
Tailored Lithium Battery for Modern Homes
Our advanced LiFePO₄ lithium battery is designed for long life, daily use, and seamless compatibility with leading inverters , all at a competitive price. Whether you're off-grid, grid-tied, or preparing for blackouts, this is the best battery for home energy storage. 15kWh LiFePO₄ battery by Freen is engineered for true versatility. Compatible with all low-voltage inverter systems, this lithium iron phosphate LiFePO₄ battery offers an exceptional lifespan and performance. As manufacturers, we offer custom builds to match your unique needs, from extra capacity to higher voltage or performance in very hot or cold environments.
15 kWh LiFePO₄ Battery for Home Specification
Low Voltage
- Cell type LiFePO₄
- Rated capacity 300 Ah
- Nominal energy 15 kWh
- Usable energy 15 kWh
- Nominal voltage 51.2 V
- Operating voltage 49-53 V
- Max. charging current 150 A
- Max. discharging current 150 A
- Rated charge / discharge power 7.5 kW
- Max.charging power 7.5 kW
- Max.discharging power 7.5 kW
- Dimensions, mm（W / D / H） 952 x 208 x 745
- Battery module weight 123 kg
- Mounting method Floor mounted
- Installation location Indoor
- Storage temperature range, °C -10 – +35
- Operating temperature range, °C Charge -10 – +55, Discharge -40 – +60
- Degree of protection IP65
- Cooling concept built-in fan
- Communication Bluetooth
- Relative humidity <70%
- Round-trip efficiency >97%
- Life cycle >10 000 times
- Warranty 5 years
High Voltage
- Cell type LiFePO₄
- Rated capacity 25 Ah
- Nominal energy 15 kWh
- Usable energy 15 kWh
- Nominal voltage 614 V
- Operating voltage 485-690 V
- Max. charging current 12.5 A
- Max. discharging current 12.5 A
- Rated charge / discharge power 7.5 kW
- Max.charging power 7.5 kW
- Max.discharging power 7.5 kW
- Dimensions, mm（W / D / H） 952 x 208 x 745
- Battery module weight 123 kg
- Mounting method Floor mounted
- Installation location Indoor
- Storage temperature range, °C -10 – +35
- Operating temperature range, °C Charge -10 – +55, Discharge -40 – +60
- Degree of protection IP65
- Cooling concept built-in fan
- Communication CAN
- Relative humidity <70%
- Round-trip efficiency >97%
- Life cycle >10 000 times
- Warranty 5 years
Our home battery 15kWh solution integrates perfectly with solar panels, wind turbines, the grid, and your household loads. Here's how:
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Stores excess energy from your renewable sources
When your small wind turbine or solar panels produce more electricity than your home uses, the LiFePO₄ battery captures and stores that surplus for later use — preventing energy waste.
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Discharges when demand is high or during outages
The system automatically supplies stored energy when household consumption spikes or the grid goes down, ensuring your essential devices stay powered.
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Allows selling to the grid at peak times
You can discharge the battery to the grid when electricity prices are highest, maximizing return on your generated energy and improving overall system economics.
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Works as a backup system in blackouts
In case of a power outage, the LiFePO₄ battery kicks in, providing uninterrupted power for critical appliances and lighting.
Reliable Performance. Advanced Technology. Practical Design.
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Long Cycle Life:
Our LiFePO₄ batteries exceed 10,000 cycles with minimal degradation
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Safety and Stability:
The lithium iron phosphate battery chemistry is safe for indoor use
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Stable Power Output:
Constant voltage discharge ensures devices and systems run smoothly
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Wide Temperature Range:
LiFePO₄ lithium batteries have a working span from -10°C to 60°C
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Compact & Lightweight:
Our lithium iron phosphate LiFePO₄ battery is easy to install and space-efficient
We Go Beyond Standard Lithium Battery Tech
Our LiFePO₄ storage system is engineered with features that outperform typical lithium-ion batteries, delivering longer life, higher safety, and better system compatibility.
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Built-in Cooling for Long-Term Stability
Integrated active cooling prevents overheating and slows degradation, ensuring consistent performance even under heavy loads or in hot climates.
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150A Charge/Discharge for High-Power Demands
A rare feature in home systems, the 150 amp throughput supports high-demand appliances and fast energy transfer, ideal for dynamic home usage.
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10,000+ Charge Cycles with Low Lifetime Cost
This battery offers one of the lowest costs per cycle in its class — making it a smart investment for long-term energy independence.
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Safe, Stable, and Inverter-Friendly
Non-toxic, cobalt-free chemistry and a stable voltage curve make the system compatible with both low-voltage and SLA inverters — no need for complex upgrades.
A Complete Small Wind System: LiFePO₄ Battery + Freen Turbines
Reliable storage for intermittent power. Designed for real energy independence. Combine Freen’s small wind turbines, vertical or horizontal, with our LiFePO₄ lithium iron phosphate battery to build a stable, high-performance home energy system. This pairing ensures that wind energy is stored efficiently, delivered reliably, and available exactly when you need it.
Why Combine Small Wind and LiFePO₄ Energy Storage?
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Stable Power Anytime
Our home lithium battery captures excess generation and keeps your home or site running smoothly, even when the wind slows down.
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Off-Grid Ready
Whether you're in a rural area or just want independence from rising grid costs, Freen wind turbines + LiFePO₄ storage give you a dependable off-grid setup.
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High Efficiency, Low Losses
With consistent voltage and >95% round-trip efficiency, LiFePO₄ lithium batteries are ideal for managing renewable inputs.
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Durability in Every Condition
Built to withstand harsh climates, this system performs from -10°C to 60°C — in wind, snow, or sun.
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Cost-Effective Over Time
Thanks to long battery life and zero fuel costs, this solution reduces your lifetime energy spend. Say goodbye to noisy generators and unstable pricing.
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Modular and Scalable
Start with one turbine and one 15kWh LiFePO₄ battery — expand as needed. Perfect for homes, farms, remote infrastructure, or microgrids.
See Our Other Products
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FREEN-20 kW
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FREEN-H15 kW
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FREEN-6 kW
Talk to an expert to learn more about usage of LiFePO₄ battery and wind power.
contact usChoose the Best Energy Storage for Home
See how our lithium iron phosphate (LiFePO₄) battery compares to older lithium-ion and hydrogen systems, offering greater safety, longer life, higher efficiency, and minimum maintenance. Invest in a solution that truly supports your household’s energy independence.
Home Batteries: Which Technology Wins?
| Feature | LiFePO₄ Solution | Old Lithium-ion | Hydrogen Storage |
|---|---|---|---|
| Safety | Highly stable & safe | Risk of overheating | High-pressure hazard |
| Cycle life | 10,000+ cycles | ~2000 cycles | N/A |
| Maintenance | Close to Zero | Requires balancing | High upkeep |
| Efficiency | >95% round-trip | 85% round-trip | <60% |
| Cost per cycle | Low lifetime cost | High | Very High |
Still Have Questions?
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A LiFePO4 battery, or lithium iron phosphate battery, is a type of lithium battery known for long life, safety, and stability.
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LiFePO4 batteries are safer, longer-lasting, and more stable than standard lithium-ion batteries.
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Yes! With over 10,000 cycles, excellent thermal stability, and fast charging, LiFePO4 lithium batteries are ideal for home energy storage.
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Extremely safe. Our lithium iron phosphate LiFePO4 battery is non-flammable, cobalt-free, and has built-in BMS protection.
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Compared to other options, our 15kWh LiFePO4 battery offers the lowest cost per cycle — a smart long-term investment.
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Yes — our system operates at 51.2V, which is the nominal voltage for modern 48V 15kWh lithium ion batteries based on LiFePO4 chemistry. It’s fully compatible with inverters and setups labeled for a 48V 15kWh battery, and offers the same energy capacity with greater stability and efficiency.
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Technically yes, but they are a safer and more stable form of lithium-ion technology. Think of them as the best version of lithium batteries.
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Yes — contact us below to buy LiFePO4 batteries and request a tailored offer.
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Yes — our battery has a capacity of 150Ah LiFePO4 lithium battery in real-world use. Our system still delivers 15kWh of reliable storage with a high discharge rate and long cycle life.
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No. Each battery module comes ready to install with standard SurLock connectors and all the accessories you need.
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We use high-performance materials for long life and reliability. In anode, durable hard carbon. In cathode, advanced mixed oxide of nickel, iron, and manganese.
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For optimal airflow and heat management, we recommend leaving about 15 cm (6 inches) between modules. Above, leave about the same space.
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The built-in Battery Management System (BMS) constantly monitors temperature. If it gets too hot, the system automatically reduces power or disconnects the battery to protect it.
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You can easily check battery status, track performance, and adjust settings.
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