Growatt LV ARK2.5L-A1 from 2.56kWh to 25.6kWh 48V Solar Battery System

By Growatt

Installation & VAT Refund

Delivery available

Experience Energy Independence with Growatt ARK LV Storage Modules

Cobalt-Free Lithium Storage with LiFePO4 Technology!

During the day, you can conveniently use the electricity generated by your solar system. But what happens when the sky is overcast or you produce more electricity than you need? Or do you want to maximise self-sufficiency? Power storage is the answer. The Growatt ARK LV storage modules are easy to install as a simple plug-and-play system and can be expanded up to ten modules, providing up to 25.64 kWh of storage capacity. This allows you to use at night or on cloudy days the solar power generated during sunny hours, giving you greater independence.

The Growatt ARK2.5L-A1 2.56-25.6kWh is designed for seamless integration with Growatt SPF 3500 ES 3.5kW, and SPF 3500 ES 5.0kW Single-Phase Off-grid Hybrid Inverters.



  • Compatible with SPF series inverters
  • Uses LFP (lithium-iron-phosphate) batteries, which are cobalt-free, ensuring excellent safety and reliability
  • Easy installation with a modular, stackable design
  • Remote firmware updates
  • Long lifespan with a 10-year warranty
  • Requires a minimum of 2 batteries for single-phase inverters
  • IP65 rated for reliable indoor and outdoor use
  • Compact size (650*260*180mm) and lightweight (30kg)
  • Monitors total battery state and individual cells, providing full protection
  • Balances cell voltage, extending battery life
  • Covered by the Growatt warranty plan

Installation available - please call 020 8064 0335 or email for a quote.

      Detailed specifications:

      Battery Module Type: LiFePO4 Cobalt Free
      Nominal Capacity: 2.56kWh
      Nominal Voltage: 51.2V
      Operating Voltage: 47.2- 56.8V
      Max. Charge/Discharge Current: 50A (2 Modules), 75A (3 Modules), 100A (4 and more Modules)
      Depth of Discharge: 90%
      Scalability: Up to 10 units in parallel
      Cycle Life: >6000 
      Installation Location: Indoor/Outdoor
      Operating Temperature Range: -10 ~ +45°C
      Ingress Protection: IP65
      Module Net Weight: 28kg
      Module Size:  650 * 260 * 170mm (stackable up to 10 Modules)
      Battery Base Weight: 5.5kg

      In the Box:
      • From 2x to 10x (depending on the chosen option) Growatt ARK2.5L-A1 LV Lithium Battery Module,
      • 1x ARK LV Battery Base,
      • 1x Growatt ARK LV-SPF-SPH Wiring, and
      • 1x Growatt ARK2.5L-A1 LV Lithium Battery User's Manual.

      For more information, call us on 020 8064 0335 or email