51.2V 300Ah (15kWh) LiFePO4 Server Rack Battery – High-Density Energy Storage for Solar & Off-Grid
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Model: 51.2V 300Ah (15.36kWh) Ultra-High Capacity Module.
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Space Saving: Replaces three standard 100Ah modules, saving 66% rack space.
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Cell Type: Prismatic LiFePO4 (Grade A EVE/CATL).
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Cycle Life: 6,000+ Cycles @ 80% DOD (Design Life 15+ Years).
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Max Discharge: 150A-200A Continuous (Supports high-power inverters).
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Scalability: Parallel up to 15 units for massive 230kWh+ systems.
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Communication: CAN & RS485 compatible with Victron, Deye, Sol-Ark, Growatt.
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Dimensions: Standard 19-inch rack width (Verify depth/height for your specific casing).
Product Catalogue
Product Description
Maximize Storage, Minimize Footprint: The 51.2V 300Ah LiFePO4 15kWh Rack Battery Revolution
The Balder Power 51.2V 300Ah LiFePO4 Server Rack Battery represents the next generation of residential and commercial energy storage. Packing a massive 15.36kWh of energy into a single module, this battery is designed to simplify installation and maximize energy density.
Why Upgrade to 300Ah?
Traditional setups require stacking multiple low-capacity batteries to achieve sufficient backup power. With our 300Ah module, you can significantly reduce the number of battery units, cables, and connections needed. A simple 2-unit stack provides over 30kWh of power—enough to run a typical American household for days during an outage.
Industrial-Grade Reliability
Built with a heavy-duty metal enclosure and an intelligent Battery Management System (BMS), this battery handles high continuous discharge currents effortlessly. It is the perfect companion for 12kW and 15kW hybrid inverters, ensuring you can run heavy loads like air conditioners and pumps without tripping the system.
Seamless Integration
Despite its high capacity, it fits into standard 19-inch server cabinets. The integrated CAN Bus communication communicates directly with leading inverter brands (Victron, Deye, Luxpower, etc.), enabling closed-loop control for optimized charging and safety.
Technical Parameters
| Model | BPL512100R | BPL512200R | BPL512280R | BPL512300R |
|---|---|---|---|---|
| Nominal Energy | 5,120Wh (5.12kWh) |
10,240Wh (10.24kWh) |
14,336Wh (14.3kWh) |
15,360Wh (15.36kWh) |
| Rated Capacity | 100Ah | 200Ah | 280Ah | 300Ah |
| Nominal Voltage | 51.2V | |||
| Max. Charge Current | 100A | 200A | 200A | 200A |
| Max. Discharge Current | 100A | 200A | 200A | 200A |
| Dimensions (L×W×H) | 483×425×155 mm | 483×580×238 mm | 483×700×238 mm | 483×700×238 mm |
| Net Weight | 46 kg | 83 kg | 110 kg | 110 kg |
| Communication | CAN / RS485 / RS232 | |||
| Cycle Life | ≥6000 Cycles @ 80% DOD | |||
| Charge Temp | 0°C ~ 55°C (32°F ~ 131°F) | |||
| Discharge Temp | -20°C ~ 65°C (-4°F ~ 149°F) | |||
| Certificates | CE, UN38.3, MSDS, UKCA | |||
Features & Advantages
🔋 Ultra-High Energy Density
Delivers 15.36kWh of usable energy per unit. Ideal for projects with limited floor space, offering more power in a smaller footprint than lead-acid or standard lithium banks.
🛡️ Active BMS Protection
Equipped with a 200A Smart BMS that monitors cell voltage differences within 0.05V. Provides quadruple protection against over-current, over-voltage, short circuits, and thermal runaway.
🔌 Reduced Installation Cost
Fewer batteries mean fewer battery cables, fewer breakers, and faster installation time. Lower your Balance of System (BOS) costs significantly.
📡 Tier 1 Inverter Compatibility
Pre-programmed with multiple protocols. Compatible with Victron Cerbo GX, Deye, Growatt, SMA, and Megarevo via CAN/RS485 ports. No external converter box needed.
❄️ Wide Temperature Performance
Engineered to perform in harsh environments. Optional self-heating function available for charging in freezing conditions (customizable for OEM orders).
🏗️ Heavy-Duty Construction
Features a reinforced steel chassis to support the weight of high-capacity cells. Front-mounted handles and sturdy terminals ensure safe handling and secure connections.
Packing & Delivery
Secure & Compliant Packaging
To ensure safe transit for Class 9 Dangerous Goods, every battery is protected with high-quality Pearl Wool (EPE Foam) and encased in UN-certified cartons. For bulk shipments, we utilize sturdy Plywood or Plastic Pallets wrapped in shrink film, fully compliant with international shipping regulations.
Global Shipping Options (Incoterms)
We support flexible shipping terms to suit your business needs, including FOB, CIF, and DDP (Door-to-Door including tax).
- By Sea: The most economical choice for bulk orders.
- By Air / Express: Fast delivery for samples (DHL/UPS/FedEx).
- By Railway: Reliable CR Express service for European and Central Asian markets.
Production Lead Time
Our lead time varies based on product customization:
| Product Type | Samples | Bulk Order |
|---|---|---|
| Standard Models | 15 - 20 Days | 25 - 30 Days |
| Customized Models | 30 - 40 Days | 30 - 40 Days |
FAQ
Q: How heavy is this 300Ah battery module?
A: Due to its high capacity, the unit weighs approximately 110kg-130kg (depending on casing). We recommend a team lift or using a mechanical lift for installation into server racks.
Q: Can I parallel this 300Ah battery with my existing 100Ah batteries?
A: No. We strongly advise against mixing different capacities (Ah) even if the voltage is the same. It creates imbalance and reduces the lifespan of the entire bank.
Q: What size server rack do I need?
A: It fits standard 19-inch width racks. However, please ensure your rack rails can support the weight, and check the depth requirement (usually requires >600mm depth racks).
Q: What is the recommended charging current?
A: For optimal lifespan, we recommend a charging current of 60A-100A (0.2C-0.33C), though the BMS supports higher currents for fast charging scenarios.
Q: Does it come with battery cables?
A: Yes, each unit ships with a pair of heavy-duty parallel cables and a communication cable (RJ45).
