Solar Battery Storage System 126.6kWh All-in-One Smart ESS

Name: Solar Battery Storage System | 60kW BESS - ETEK Electri
SKU: BESS-M-60-126-75

The BESS-M 60-126-75 is an all-in-one solar battery storage system that combines 126.6kWh of LFP storage, a built-in PCS, STS and dual-input solar MPPT in one IP54 cabinet, built for diesel hybrid and off-grid microgrids.

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ModelBESS-M-60-126-75

CategoryUncategorized

AvailabilityIn stock

CE & TUV certified
Worldwide shipping
OEM & ODM support

Product Features of Solar Battery Storage System

This solar battery storage system integrates battery, power conversion, static transfer switching, and PV input in a single cabinet, simplifying installation in the PV-ESS-Diesel Microgrid System.

Status Indication: shows system status, including load, storage capacity, and power.
Multi-Mode Operation: supports multi-level priority control for reliable power from the grid, PV, and loads.
Battery Management: integrated BMS for battery monitoring and protection.
Remote Monitoring: multi-end remote access via a self-service platform and device-side protocols.
Easy Installation: IP54 cabinet with flexible installation options.
Scalable Output: selectable PCS output of 24kW, 36kW or 60kW, with up to 5 PCS in parallel.
Fast Transfer: built-in STS with a switching time of ≤10ms.
Wide Operating Range: -30~60°C working temperature (derating above 45°C), dry self-cooling, up to 4000m altitude (derating above 2000m).

Commercial Applications of Solar Battery Storage System

In off-grid sites without city power, this solar battery storage system acts as the core of a tiered “solar + battery + diesel generator” supply. The EMS prioritizes solar generation, storing energy by day and releasing it at night, which minimizes generator start-up time and cuts fuel, transport, and maintenance costs.

PV-ESS-Diesel microgrid: solar array, diesel generator and ETEK storage cabinets

Applications & Use Cases

Remote and off-grid sites: a 60kW battery system delivers an autonomous, reliable power supply where no utility grid exists.
Diesel fuel reduction: a solar diesel hybrid system lets the generator run in an efficient, stable range, improving fuel efficiency and extending equipment lifespan.
Power quality and stability: the storage balances load fluctuations instantly, suppressing the frequency and voltage oscillations caused by equipment start-up/shutdown and renewable variation.
Critical load protection: multi-energy complementarity keeps critical loads running through extreme weather and sudden load changes.
Self-consumption: off grid power storage retains daytime solar for nighttime use.
Load smoothing: peak shaving battery storage handles short-term load peaks so the diesel generator is not forced to follow them.

System topology: diesel generator, STS, PCS, battery pack with BMS, PV array, EMS and load

Technical Specifications of Solar Battery Storage System

The tables below list the verified data for the BESS-M 60-126-75 solar battery storage system, as published in the ETEK PV-ESS-Diesel Microgrid System datasheet.

Battery Module

Parameter	Value
Voltage	57.6V
Capacity	314Ah
Energy	18kWh
Cooling method	Dry self-cooling

Battery Cluster

Parameter	Value
Rated voltage	403V
Grouping method	1P126S
Rated capacity	314Ah
Output voltage range	352.8V~447.3V
Rated energy	126.6kWh
Max continuous charging current	157A
Max continuous discharge current	157A

Work & Storage Environment

Parameter	Value
Charging temperature	-30~60℃
Discharging temperature	-30~60℃
Operating humidity	RH≤80%
Short-term storage (<1 month)	-20~55℃
Storage humidity	RH≤80%

PCS Parameters

Parameter	Value
Rated current	86.6A / 91.2A
Maximum output current	95.3A / 100.3A
Overload capacity	110% long-term
Output power	24kW / 36kW / 60kW
AC port voltage	2P/N/PE: 120V/240V (24kW); 3P/N/PE, 3P/PE: 208V/220V/240V (36kW), 380V/400V/415V (60kW)
Frequency	50/60Hz ±5Hz
Power factor	0.8 lead ~ 0.8 lag
Battery side voltage	150V-800V
Parallel	Max 5 PCS
STS switching time	≤10ms

PV Parameters

Parameter	Value
Maximum power	38.4kW + 38.4kW
Maximum PV voltage	850V
MPPT voltage range	200V-800V
Maximum DC input current	64A + 64A
PV startup voltage	250V

System Parameters

Parameter	Value
*Dimension (WDH)*	110014252110mm
Weight	1620kg
Degree of protection	IP54
Working temperature range	-30~60°C (>45°C derating)
Cooling	Dry self-cooling
Relative humidity	5~95% (no condensing)
Highest altitude	4000m (>2000m derating)

Dimensions and Wiring of Solar Battery Storage System

The cabinet of this solar battery storage system measures 1100mm (W) x 1425mm (D) x 2110mm (H) and weighs 1620kg. The front, side and back views below show the door, ventilation and connection areas for site planning; floor space and lifting must allow for the cabinet weight.

Wiring

The system connects to the diesel generator and load on the AC side (through the STS), to the PV array on the DC/MPPT side, and to the battery pack through the BMS. The EMS communicates with the cloud and dispatching platforms over the COMM line (see topology diagram above).