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18.00 kWh 51.2V LiFePO4 (LFP) StorageDOCK Battery

The Storagedock ES18K is an ultra-high-capacity 51.2V LiFePO4 battery, representing one of the most powerful single-unit solutions for large-scale energy storage. Delivering a massive 18kWh of total energy, this unit features bolted Grade A Prismatic cells and a 10-year warranty, providing an elite power foundation for heavy-duty residential, commercial, and industrial 48V systems.

Retail price: R66,386.87 excl. VAT

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Monumental Energy Density & Industrial Build

The Storagedock ES18K (51.2V / 352Ah) is engineered for environments that demand maximum energy reserves and uncompromising durability. It is constructed with bolted Grade A LiFePO4 Prismatic cells clamped at 5000N and protected by MICA-based dividers to ensure ultimate structural and thermal stability. Providing 14.4kWh of usable energy at 80% Depth of Discharge, it is designed to sustain high-performance loads with a professional-grade service life.

Intelligent Monitoring & System Management

Stay in complete control with the ES18K’s advanced digital ecosystem. The unit features an integrated 3-page color touch screen for real-time local data access, supplemented by a Bluetooth App for mobile monitoring on both Android and iOS. For seamless system-wide integration, it includes CAN-bus communication fully compatible with Victron Energy ecosystems, delivering precise SOC (State of Charge) and SOH (State of Health) data while recording all historic performance parameters.

Elite Protection & Exceptional Scalability

Safety is managed by a heavy-duty 300A BMS and an integrated 300A circuit breaker with trip function. To maintain the health of the massive 352Ah cell pack, a 3A active cell balancer works continuously to ensure perfect voltage equilibrium across all cells. For massive industrial requirements, up to 8 units can be connected in parallel, creating an expansive 144kWh energy storage bank. The unit is housed in a rugged polymer-coated steel shell with a galvanized steel internal cell pack, designed for professional wall or floor installation.

Key Product Specifications

  • Battery Type: Grade A LiFePO4 Prismatic Cells (Bolted)
  • Nominal Voltage: 51.2 VDC
  • Total Energy Capacity: 18 kWh (352 Ah)
  • Usable Energy: 14.4 kWh (@ 80% DoD)
  • User Interface: 3-Page Color Touch Screen & Bluetooth App
  • Communication: CAN-bus (Victron Interface)
  • Protection: 300A BMS & 300A Circuit Breaker with trip function
  • Recommended Inverter: 15kVA
  • Scalability: Parallel up to 8 Units (144kWh Total)
  • Warranty: 10 Years / 3000 Cycles @ 80% DoD
Technical Specifications ES18K – 51.2V
Product code ES18K
Battery type Grade A LiFePO₄ prismatic cells, bolted
Number of internal modules 1
Nominal voltage 51.2 V
Nominal Ah 352 Ah
Total energy capacity 18 kWh
Available energy @ 80% DOD 14.4 kWh
Recommended charge current 0.5C
Maximum charge current 300 A
Bulk / Absorption charge voltage 56.2 VDC
Float voltage 56.2 VDC
Sync voltage Over ruled by BMS ± 55.2 VDC
Recommended discharge current 0.5C
Maximum discharge current 300 A
Protection: Circuit breaker type 300 A with trip
BMS ampere & number 300 A x 1
Recommended inverter size 15 kVA
Maximum parallel of units 8
Parallel ampere per unit: Discharge 300A / 600A / 800A / 1000A / 1000A / 1000A / 1000A / 1000A
Parallel ampere per unit: Charge 300A / 600A / 800A / 1000A / 1000A / 1000A / 1000A / 1000A
CAN-bus communication Yes
Recommended operating temp: Charge 5° – 45°C
Recommended operating temp: Discharge 0° – 50°C
Warranty period 10 Years / 3000 cycles @ 80% DOD
Nett weight 143kg
Dimensions (h x w x d) 675mm x 600mm x 300mm
Recommended cable size 120mm²
Installation type Indoors – Wall / floor
Ventilation distance 200mm
Installation conditions Dry. Clean. Regulated temperature
Enclosure Galvanized steel cell pack. Polymer coated steel shell
User interface 3 “page” colour touch screen
Essential accessories Storagedock 400A cable kit

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