product details

Energy Storage Pack QCESS-261AC

Flexible Expansion: Supports parallel connection of up to 10 units.

Ultimate Safety: Features fire detection, active venting, and passive explosion-proof design.

Intelligent Temperature Control: BUtilizes PACK-level intelligent liquid cooling and PCS intelligent air cooling technology. It maintains cluster-level temperature difference within ≤3°C, effectively extending battery cell lifespan.

High Protection Rating: IP55 rated, with optional C3/C5 anti-corrosion grades for the entire unit. Designed to withstand harsh environments with high humidity and high salt mist corrosion.

Specification

Large Current

High Voltage

Convenient Installation

Low Resistance

Protection grade up to IP68

Certified by TUV and UL

Technical Data

Item	QCESS-261AC
Battery Parameters
Battery Type	LiFePO4
Cell Capacity	314Ah
Pack Configuration	1P52S*5
Rated Current	157A
Max. Current	180A
Battery Voltage Range	754-936Vdc
System Nominal Capacity	261Kwh
Grid-connected AC Parameters
Rated Power	125kW
Max. AC Current	200A
Rated AC Voltage	230/400V
Wiring Method / Connection Type	(3W+PE) 3-phase 3-wire / (3W+N+PE) 3-phase 4-wire
Frequency	50/60 (±5) Hz
Power Factor	0.99
Current Distortion Rate	＜3% (At rated power)
Max. Parallel Units	10
System Parameters
Weight	2600±100KG
Dimensions (W/D/H)	98013752265
Max. Efficiency	90%
Liquid Cooling Unit Power	5kW (Cooling capacity), 2kW (Heating capacity)
Operating Temperature	0℃ ~45℃ for charging, -20℃~ 45℃ for discharging
Operating Humidity	≤ 85%
Protection Degree	IP55
Anti-corrosion Grade	C3 (C5 optional)
Cooling Method	PACK liquid cooling + PCS air cooling
Noise Level	≤ 75dB
Altitude	3000m(Derating above 2000m)
Display	Touch screen
Fire Protection	Novec, compound / water immersion detection, explosion-proof exhaust
Communication	4G / Ethernet / RS485
Certification	CE, UN38.3