Skip to product information
1 of 5

Marstek

Marstek Mars I Plus stackable high-voltage battery module 5.12kWh LiFePO4

Marstek Mars I Plus stackable high-voltage battery module 5.12kWh LiFePO4

Regular price €1,312.50
Regular price Sale price €1,312.50
Sale Sold out Excl. VAT — calculated in the cart256 €/kWh
See the price with VAT

Price including VAT by delivery country

  • Italy22% €1,601.25
  • Germany19% €1,561.87
  • France20% €1,575.00
  • Austria20% €1,575.00
  • Belgium21% €1,588.12
  • Bulgaria20% €1,575.00
  • Croatia25% €1,640.62
  • Cyprus19% €1,561.87
  • Czech Republic21% €1,588.12
  • Denmark25% €1,640.62
  • Estonia24% €1,627.50
  • Finland25.5% €1,647.18
  • Greece24% €1,627.50
  • Hungary27% €1,666.87
  • Ireland23% €1,614.37
  • Latvia21% €1,588.12
  • Lithuania21% €1,588.12
  • Luxembourg17% €1,535.62
  • Malta18% €1,548.75
  • Netherlands21% €1,588.12
  • Poland23% €1,614.37
  • Portugal23% €1,614.37
  • Romania21% €1,588.12
  • Slovakia23% €1,614.37
  • Slovenia22% €1,601.25
  • Spain21% €1,588.12
  • Sweden25% €1,640.62

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).

  • 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.

AVAILABILITY

Product available, quantity not tracked

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 daysBatteryMarstek

Marstek Mars I Plus stackable high-voltage battery module 5.12kWh LiFePO4

This is the 5.12kWh battery module of the Marstek Mars I Plus storage system: automotive-grade LFP cells in a stackable, plug-and-play pack designed to work with the Mars I Plus hybrid inverter in a V-Boost high-voltage configuration of up to 1000V. Real-time cell balancing prevents the weakest module from limiting the whole pack.

Capacity is built to measure: start with one module and grow to six modules for 30.72kWh per system, or up to 122.88kWh by paralleling four Mars I Plus systems. The cells exceed 10,000 cycles while keeping 80% of their capacity for up to 15 years, with a 10-year warranty. IP65 enclosure with fire- and heat-resistant materials, operation from -25 to 60 °C and noise below 30 dB.

Key features

5.12kWh per moduleAutomotive-grade LFP battery pack, stackable and plug-and-play, added whenever more capacity is needed.
From 5.12 to 30.72kWhUp to six modules per system, and up to 122.88kWh by paralleling four Mars I Plus systems.
V-Boost high voltageConfiguration up to 1000V with real-time cell balancing: no barrel effect between modules.
Over 10,000 cycles80% capacity retention for up to 15 years of service, backed by a 10-year warranty.

Technical specifications

FeatureValue
Product codeMars I plus ESS battery
Product typeBattery module for the Mars I Plus storage system
Rated capacity per module5.12kWh
Cell chemistryAutomotive-grade LFP (lithium iron phosphate)
Expandability per system5.12kWh to 30.72kWh (maximum 6 modules)
Parallel expandabilityup to 122.88kWh with 4 Mars I Plus systems
ArchitectureV-Boost high voltage up to 1000V
Cell balancingreal time, at individual cell level
Cycle life> 10,000 cycles
Capacity retention80% for up to 15 years
InstallationModular, stackable, plug-and-play
Ingress protectionIP65
Materialsfire and high-temperature resistant
Operating temperature-25 °C to +60 °C
System noise level< 30 dB
CompatibilityMarstek Mars I Plus hybrid inverter (single-phase and three-phase)
Warranty10 years

Documentation

PDFMarstek Mars I Plus - Product Introduction (PDF)Official manufacturer documentPDFMarstek Mars I Plus Three-Phase - Brochure (PDF)Official manufacturer document

Installation and wiring must be carried out by qualified personnel in accordance with the applicable standards and the electrical design of the system.