More Than Just High Capacity — Built for High Power & ❄️ Low-Temperature Performance.

EVE LF334 18kWh LiFePO₄ Battery Pack

Real 350Ah Capacity | JK V19 Smart BMS | -10°C Charging

More than just a battery.

Built for cold climates, high-power applications, and long-term reliability.

❄️ Charge Even Below Freezing

Most LiFePO₄ batteries stop charging at 0°C.

The new EVE LF334 changes the rules.

✅ Supports charging down to -10°C

✅ Perfect for winter solar systems

✅ Better charging efficiency during cold mornings

✅ Less dependence on external battery heaters

Why does this matter?

EVE 334Ah can be regarded as a low-temperature battery cell. It supports charging at temperatures as low as -10°C, whereas most LiFePO₄ cells on the market can only be charged safely above 0°C. This is one of the biggest advantages of the EVE 334Ah.

With the EVE LF334, the low-temperature charging capability is built directly into the cells, allowing many installations to operate without a dedicated battery heating system.

💡 Less hardware. Lower installation costs. Greater reliability.

 

⚡ Massive Power When You Need It

Power isn't just about capacity.

It's about delivering energy instantly when heavy loads demand it.

EVE LF334 Performance

⚡ Continuous Discharge
167A (0.5C)

🚀 Peak Discharge
1002A (3C)

Compared with conventional 314Ah cells, the LF334 delivers significantly higher surge capability, making it ideal for:

🏠 Heat Pumps

❄️ Air Conditioners

🚗 EV Chargers

🔨 Workshop Equipment

🚿 Water Pumps

⚡ Large Hybrid Inverters

We believe you should get exactly what you pay for—or better.

That is why every one of our battery packs is load-tested before shipment, with our EVE Grade A cells consistently hitting actual capacities well over 350Ah. With up to 18kWh of usable energy (16S) at your disposal, you get more than just a battery; you get a reliable power reserve that maximizes your solar storage, keeps your lights on longer during outages, and boosts your daily energy independence.

Our Quality: Genuine EVE A+ Grade Cells

At the heart of every Deligreen battery pack lies the industry’s gold standard: Brand New EVE 334Ah Cells. * Factory Original: We guarantee 100% authentic, fresh-from-the-factory A+ grade cells.

This is our latest 2026 official EVE authorization certificate. We are one of EVE’s officially authorized agents.

• All EVE cells we supply are:
• Genuine A+ grade
• Brand newWith original factory QR codes, intact and traceable

Even though we source original, authentic products directly from the EVE factory, we still carry out capacity grading and aging tests. Why do we incur additional costs to perform this step?

 Why must Deligreen do this?

Step 1-Capacity grading

Capacity grading ( Full name: capacity sorting and cell matching) is a core manufacturing process. It uses standardized charge-discharge cycles to accurately measure the core parameters of each individual cell, including actual capacity, internal resistance, charge-discharge voltage platform, and self-discharge rate. Cells with highly consistent parameters are then screened and grouped into the same batch for battery pack assembly.

Address the Barrel Effect
The overall performance of a battery pack is determined by its weakest cell. When cells with different capacities and internal resistance are used together, lower-capacity cells will reach full charge or discharge earlier, triggering BMS protection prematurely.
As a result, the pack cannot fully utilize its energy, and the capacity of other cells is wasted.

Eliminate Inherent Inconsistencies
Even within the same batch, cells have slight differences in capacity, internal resistance, and self-discharge due to production variations.
While negligible for single-cell use, these differences are amplified after pack assembly through repeated charge and discharge cycles, eventually leading to premature pack failure.

Prolong Battery Pack Lifespan
Industry data shows that battery packs without proper cell grading achieve only 30%–50% of the cycle life compared to packs with matched cells.
Proper cell matching significantly extends the overall lifespan and reliability of the battery system.

Step 2-Aging Test

The aging test, also known as the resting or storage test, is performed after cell formation. During this time, key parameters such as voltage and internal resistance are continuously monitored to evaluate self-discharge behavior.

Key Benefits

1. Detect Abnormal Self-Discharge (Critical Step)
A healthy cell shows minimal voltage drop during storage.
Cells with hidden defects, however, will exhibit rapid voltage loss.

Through aging tests, we can accurately identify and eliminate these defective cells.
If such cells were used in a battery pack, they would continuously drain energy from other cells, leading to imbalance, reduced performance, and potential safety risks.

2. Stabilize Internal Chemistry
The resting process helps stabilize the SEI (Solid Electrolyte Interphase) layer on the anode, improving long-term performance and enhancing cycle life.

3. Improve Reliability and Consistency
Aging allows internal stresses within newly formed cells to settle, ensuring more stable and predictable performance during real-world operation.

⚠️ Why Cell Quality Matters (The Deligreen Promise)

The price of a battery is the price of its cells. Many low-cost competitors use Grade B/C, recycled, or aged cells that fail within 2-3 years. At Deligreen, we have a Zero-Tolerance Policy for:

❌ Grade A- or B Cells

❌ Unknown or Unbranded Sources

❌ Stockpiled or Old Inventory

❌ Second-hand/Refurbished Cells

We are so confident in our quality that we encourage you to open the case and inspect the cells upon arrival. 🛠️

Built-in JK V19 BMS

1. Industry-Leading 2A Active Balancing 

Unlike traditional "Passive" BMS that waste energy as heat, JK uses patented Active Balancing technology. With a massive 2A balancing current, it transfers energy from high-voltage cells to low-voltage cells in real-time.

• The Benefit: Extends your battery’s lifespan by 2-3 years and unlocks up to 15% more usable capacity by eliminating the "bottleneck" effect.

2. 200A Continuous Power ⚡

Engineered for high-demand environments. Supporting 200A continuous discharge and up to 400A peak current, this BMS can easily handle whole-home loads, heavy appliances, and power surges without breaking a sweat.

3. Universal Inverter Compatibility (CAN/RS485) 

Equipped with RS485 and CAN communication ports, it comes pre-loaded with protocols for the world’s leading inverter brands.

• Fully Compatible with: Victron, Pylontech, Deye, Growatt, Goodwe, Sofar, Luxpower, Must, Solis, SolarEdge, Easun and many more.
• Plug-and-Play: Real-time data synchronization between your battery and your inverter.

4. Scalable for the Future: 16 Packs in Parallel 🔋

Your energy needs might grow, and your BMS should grow with you. This unit supports the parallel connection of up to 16 battery packs, intelligently managing current distribution across the entire system.

5. Advanced Thermal Management 🛡️

Integrated with multiple temperature sensors and a dedicated heating function interface. This ensures your LiFePO4 cells stay safe and operational even in freezing winter conditions.

🥇Official Warranty & Service Commitment🥇

Since 2010, Deligreen Power has been dedicated to delivering innovative, reliable energy solutions with a mission to exceed customer expectations. For nearly 15 years, your satisfaction has been our driving force. To uphold this commitment, we proudly offer the following guarantees:

1. Comprehensive Warranty Coverage

10-Year Full Warranty:
All order product are covered against defects in quality issue for 10 years from the date of purchase.

Free Replacement or Refund: If a defect is confirmed, we will replace the product or issue a full refund at no cost to you.

No-Hassle Process: Simply contact our support team with proof of purchase and a detailed description of the issue.

2. Life Time Technical Support

• Enjoy free technical support for 10 years, including:
• Troubleshooting guidance for installation, configuration, and software.
  
• Remote diagnostics via SEPLOS BATTERYMONITOR software.

Warehouse address: Klonowa 48, Warszawa, Mazowieckie, Kajetany 05830, Poland

Maintenance address: ul.Szeroka 75, 05-831 Parole, Poland