Skip to product information
1 of 1

Fox ESS

Fox ESS EQ3300-H 12.8kWh 256V High Voltage Heated Battery Stack, Master and Slave

Fox ESS EQ3300-H 12.8kWh 256V High Voltage Heated Battery Stack, Master and Slave

Regular price €4,027.07
Regular price Sale price €4,027.07
Sale Sold out Excl. VAT — calculated in the cart315 €/kWh
See the price with VAT

Price including VAT by delivery country

  • Italy22% €4,913.02
  • Germany19% €4,792.21
  • France20% €4,832.48
  • Austria20% €4,832.48
  • Belgium21% €4,872.75
  • Bulgaria20% €4,832.48
  • Croatia25% €5,033.83
  • Cyprus19% €4,792.21
  • Czech Republic21% €4,872.75
  • Denmark25% €5,033.83
  • Estonia24% €4,993.56
  • Finland25.5% €5,053.97
  • Greece24% €4,993.56
  • Hungary27% €5,114.37
  • Ireland23% €4,953.29
  • Latvia21% €4,872.75
  • Lithuania21% €4,872.75
  • Luxembourg17% €4,711.67
  • Malta18% €4,751.94
  • Netherlands21% €4,872.75
  • Poland23% €4,953.29
  • Portugal23% €4,953.29
  • Romania21% €4,872.75
  • Slovakia23% €4,953.29
  • Slovenia22% €4,913.02
  • Spain21% €4,872.75
  • Sweden25% €5,033.83

Shown prices exclude VAT. At checkout the rate of the delivery country applies. Businesses with a valid EU VAT number buy without VAT (reverse charge).

10 units at this price

  • Prices exclude VAT: tax is calculated in the cart based on the delivery country.
  • EU businesses: 0% VAT with a VAT number valid in VIES — the field appears at checkout, below the delivery address.
  • Reduced 10% VAT on solar and storage for customers in Italy: write to us before ordering.

Shipping

  • Italy: €13 on orders up to €150, free shipping over €150.
  • European Union: 60 € per order, with no threshold

Rates apply to the cart total and are confirmed at checkout, where shipping to countries outside the EU is also calculated.

View full details
Delivery in 10-20 daysFox ESS

Fox ESS EQ3300-H 12.8kWh 256V High Voltage Heated Battery Stack, Master and Slave

The Fox ESS EQ3300-H 12.8kWh stack is a high voltage storage block supplied already made up: four LiFePO4 modules of 3.2kWh each, one master and three slave modules. It banks the energy the solar array produces during the day and releases it in the evening, or when the grid is down, without having to pick the individual modules one by one.

The master module carries the management system that watches every cell and talks to the hybrid inverter over CAN: it is the part that holds the stack together, while the slaves only add capacity. The stack does not stop here either, since it takes up to six modules in total, that is 19.2kWh: it starts at 12.8kWh and grows when consumption or array size changes.

Every module in this block has built-in heating, which widens the usable temperature range and makes it the right choice for garages, cellars and unheated plant rooms. Heated and non-heated modules can share the same system, but if a single battery in the stack does not support heating the function is disabled system-wide. The cells are lithium iron phosphate with a declared depth of discharge of 90%, and mounting is plug-in. Check the inverter model against the official Fox ESS compatibility list; installation and commissioning must be carried out by qualified personnel.

Key strengths

12.8kWh already made upFour EQ3300-H modules of 3.2kWh under one part number.
Master and slaves includedOne master with BMS and CAN communication, plus three slave modules.
Expandable to 19.2kWhThe stack accepts up to six modules in total.
Built-in heatingWorks in cold rooms too: garages, cellars, plant rooms.
65A peak for 60s50A continuous, about 12800W, peaking at about 16640W.

Technical specifications

Feature Value
Product code FE-HV-EQ-A-4-3.3-12.8
Manufacturer Fox ESS
Series EQ3300-H
Type High voltage storage stack
Contents 1 master module + three slave modules EQ3300-H, all heated
Chemistry LiFePO4 (lithium iron phosphate)
Nominal energy 12.8kWh (4 x 3.2kWh)
Usable energy 11.52kWh (12.8kWh at 90% DoD)
Nominal system voltage 256V (4 modules of 64V in series)
Operating voltage range 232-292V
Nominal capacity 50Ah
Depth of discharge (DoD) 90%
Maximum charge and discharge current 50A (about 12800W at 256V)
Recommended discharge current 25A (about 6400W at 256V)
Peak discharge current 65A for 60s (about 16640W at 256V)
Modules per stack 2 to 6 (1 master and up to 5 slaves)
Maximum system capacity 19.2kWh
Heating Built into every module
Communication CAN, from the master module to the inverter
Ingress protection IP65
Weight 142.8kg
Source of the technical data Figures declared by Fox ESS, EQ3300 datasheet (EQ3300-L4 configuration); power values are derived from the declared currents at nominal voltage