The Growatt ARK-XH 2.56 kWh (ARK 2.5H-A1) is the main part of Growatt’s most flexible high-voltage storage system. This module is made for the “Battery-Ready” generation and lets homeowners add storage to their existing Growatt XH inverters by stacking them without any cables.
The best battery for the Growatt MIN 5000TL-XH is one that works without any problems.
The Growatt ARK-XH 2.56 kWh series is designed to work with Growatt’s newest inverter lines as their main storage partner. This battery is the best for Growatt MIN 5000TL-XH (single-phase) and MOD TL3-XH (three-phase) systems because it has a direct DC connection that cuts down on energy conversion losses.
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Stackable “Quick-Plug” Design: Forget messy wiring. This cable-free, stackable solar battery installation uses internal plugs to connect modules, creating a clean, professional “tower” look in minutes.
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Smart Management: Through the ShinePhone app, you benefit from a solar battery with remote firmware upgrade capabilities, allowing Growatt to optimize your battery’s performance and safety protocols without a technician ever visiting your home.
Safety First: Modular Cobalt-Free LiFePO₄ Battery 25.6 kWh
In 2026, home safety is the top priority for energy storage. The ARK 2.5H-A1 utilizes Lithium Iron Phosphate (LFP) technology, the safest and most stable lithium chemistry available.
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Non-Toxic & Stable: As a modular cobalt-free LiFePO₄ battery 25.6 kWh powerhouse, it offers higher thermal stability and a longer cycle life (>6,000 cycles) compared to traditional NMC batteries.
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Flexible Growth: Start with two modules (5.12 kWh) and expand up to 10 modules per tower for a massive 25.6 kWh usable capacity.
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Precise Sizing: While competitors force you into 5 kWh jumps, the Growatt ARK 2.5H-A1 price per module allows you to scale in smaller, more affordable 2.56 kWh increments to perfectly match your evening usage.
Built for Extremes: IP65 outdoor solar battery for cold climates
The Growatt ARK-XH 2.56 kWh is made to handle the weather, whether it’s in a garage or on an outside wall. This is a tough IP65 outdoor solar battery for cold weather that is made to keep working even when the temperature drops.
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Extreme Temperature Range: This battery can work in temperatures from -10°C to +50°C. It has internal temperature sensors that speed up charging to protect the cells during the winter.
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Natural Cooling: The fanless design ensures the unit remains whisper-quiet and prevents the intake of dust or debris, further extending the system’s lifespan.
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Technical Specifications (ARK 2.5H-A1)
| Feature | Specification Details |
| Model | ARK 2.5H-A1 (High Voltage) |
| Nominal Energy | 2.56 kWh |
| Nominal Voltage | 51.2 V |
| Operating Voltage | 47.2 V – 56.8 V |
| Standard Charge/Discharge | 25 A (0.5C) |
| Cycle Life | > 6,000 Cycles @ 25°C |
| IP Protection | IP65 (Dust-tight & Water-resistant) |
| Dimensions (WxDxH) | 650 x 260 x 180 mm |
| Weight | 28 kg |
| Warranty | 10-Year Manufacturer Warranty |
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