DC Block

EASYCUBE (835 kWh)

Sermatec · LFP · Liquid cooled

835 kWh outdoor DC battery cabinet using 314Ah LFP cells in a 1500V architecture with two parallel battery clusters. Liquid-cooled with ethylene glycol solution and independent fire detection and suppression per compartment. Designed for flexible DC or AC-coupled pairing with up to 6 cabinets per system.

835.9 kWh
Capacity
LFP
Chemistry
314Ah
Cell
Download Datasheet (PDF)

Specifications

Battery Parameters
Nominal Energy 835.9 kWh
Nominal Power 417.9 kW
Nominal Voltage 1,331.2V
Voltage Range 1,164.8-1,497.6V
Cell Type 3.2V / 314Ah, LFP
Grouping Method 1P104S x 4S x 2P
Charge/Discharge Rate 0.5P
DC-Side RTE 94% or higher (25 C, 0.5P, BOL)
General
Cooling Method Liquid cooling (50% ethylene glycol)
IP Rating IP55 (battery compartment)
Corrosion Resistance C4-M (cabinet), optional C4-M (cooling unit)
Design Life 20 years (main structure)
Operating Temperature -30 to +50 C (derating above 45 C)
Altitude 4,000 m (no derating below 2,000 m)
Dimensions (W x D x H) 1,425 x 2,595 x 2,516 mm
Weight 8,000 kg approx
Noise 75 dB(A) or less @1m
BMS Balancing Passive balancing
Parallel Configuration 1x BCP with 6x 835 kWh cabinets (standard)

Key Features

  • 1500V DC architecture with two parallel battery clusters for high energy density
  • DC-side round-trip efficiency of 94% or higher at 0.5P discharge rate
  • 20-year design life for main cabinet structure
  • Compatible with DC-coupled or AC-coupled system configurations
  • Multi-level electrical protection: pack fuses, cluster fault ID, cabinet-level breakers, and PCS active protection
  • Independent fire detection and suppression per compartment with gas and water systems
Product Certifications
IEC 62619 IEC 63056 IEC 62477-1 IEC 61000 IEC 60730 UN 38.3 UL 9540A
Environmental Compliance
EU 1542
About the Manufacturer
Sermatec
Shanghai, China · Founded 2017

Shanghai Sermatec Energy Technology Co., Ltd., founded in 2017, is a BNEF Tier 1 energy storage system manufacturer headquartered in Shanghai, China. The company produces liquid-cooled container and outdoor cabinet battery systems for C&I and utility-scale applications. Sermat...

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EASYCUBE (835 kWh) Datasheet
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