Growatt ARK LV
Budget low-voltage (51.2 V) modular LFP storage.
Capacity
2.56–25.6 kWh (modular)
Power
5 kW
Warranty
10 years
Installed price
£2,500–£5,400
Overview
The Growatt ARK LV is the low-voltage (51.2 V) version of Growatt's modular battery, built from 2.56 kWh ARK 2.5L-A1 blocks (cobalt-free LFP). Two to ten modules connect in parallel for 2.56 to 25.6 kWh, and it pairs with Growatt's low-voltage hybrid inverters. With a 6,000-cycle life, IP65 rating and some of the keenest price-per-kWh on the market, it is a flexible budget choice that can start small and grow.
Pros
- Among the lowest upfront costs per kWh
- Plug-together 2.56 kWh modules (2 to 10 in parallel)
- 6,000-cycle life, 10-year warranty
- IP65; widely stocked by UK installers
Worth knowing
- Low-voltage architecture is less efficient than HV at scale
- Needs a matching low-voltage Growatt inverter
Best for
Value-focused buyers on a low-voltage Growatt hybrid inverter
Suits the Trim your bills and Cover your peak and Export & earn tiers in our battery finder.
Technical specifications
Electrical
- Battery module
- ARK 2.5L-A1 (2.56 kWh, 128 Ah, 30 kg)
- Modules in parallel
- 2–10 (2.56–25.6 kWh)
- Rated voltage
- 51.2 V
- Operating voltage
- 47.2–56.8 V
- Charge/discharge current
- 25 A
- Chemistry
- Cobalt-free LFP
- Cycle life
- 6,000
Mechanical & general
- Dimensions per module (W×D×H)
- 650 × 260 × 170 mm
- Weight per module
- 30 kg
- Ingress protection
- IP65
- Communication
- CAN / RS485
- Compatible inverters
- Growatt low-voltage hybrids (SPF/SPH/MIX)
- Warranty
- 10 years
Downloads
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