An all-in-one battery energy storage cabinet—battery, PCS, air conditioning and fire suppression in one IP54 enclosure—that connects on the AC side of an existing PV system. The HC-UPSA241 provides 105kW / 241kWh and lists both on-grid and off-grid operation.
The HC-UPSA241 connects on the AC side of an existing PV inverter. Confirm inverter compatibility, metering and control design, protection coordination, and outage/islanding requirements before using it for a retrofit.
Record the PV inverter model, AC capacity, and any export limit so the cabinet's charge and discharge can be coordinated with it.
The control strategy depends on where the site meter and current sensors sit. Map them before defining peak-shaving or self-consumption behaviour.
Adding a 105kW source on the AC bus changes fault levels and protection settings. Include them in the engineering review.
Off-grid operation is listed for this model; which loads stay powered, and how transfer happens, is a site design decision.
The cabinet measures 1600 × 1103 × 2254mm and weighs about 2.5t. Confirm the pad, clearances, cable route, and service access.
Communication is via Ethernet. Define who provides the EMS logic and how it interacts with the existing PV monitoring.
The all-in-one cabinet suits retrofit and smaller C&I loads. When the project needs more power or duration, compare the split cabinet systems.
| Option | Power | Capacity | Architecture | Typical Fit | |
|---|---|---|---|---|---|
| HC-UPSA241 | 105kW | 241kWh | All-in-one, AC-coupled | Existing PV, smaller C&I loads | View specs → |
| Split Cabinet Systems | 300kW–1.26MW | 723kWh–2.5MWh | Battery + PCS cabinets | Larger C&I peak and backup | View specs → |
Start from the existing PV system and the site load profile. The cabinet adds storage on the AC side; the value comes from how it is controlled against the meter.
Store midday PV that would otherwise be exported or curtailed, without rewiring the array.
Clip a recurring peak where 105kW / 241kWh matches the measured load profile.
Keep selected loads running using the listed off-grid mode, subject to the site transfer design.
How an AC-coupled battery connects alongside an existing PV inverter, and what that means for retrofit projects.
Read the guide
Compare AC- and DC-coupled architectures before choosing between a retrofit cabinet and an integrated PV-storage system.
Compare architectures
Identify the load and tariff inputs, compare cabinet and container layouts, and prepare a first engineering review.
Plan a C&I system
A cabinet that connects to the site on the AC side, alongside an existing PV inverter, rather than to the PV array's DC side. The HC-UPSA241 integrates the battery, PCS, air conditioning, and fire suppression in one enclosure.
It is designed for AC-coupled retrofit. Inverter compatibility, metering, protection, and control design must be confirmed for the specific site.
105kW rated power, 241.152kWh rated capacity, LiFePO4 cells (3.2V / 314Ah), air cooling, IP54, C4 anti-corrosion rating, and FK-5-1-12 fire suppression, per the product datasheet.
The datasheet lists an off-grid rated power of 105kW at 400V. Which loads are backed up and how transfer works depend on the site electrical design.
When the project needs more than 105kW / 241kWh—Hua Power split cabinet systems cover 300kW to 1.26MW with separate battery and PCS cabinets.
Share the existing PV inverter details, export limit, meter position, load data or utility bills, and the backup objective. Our engineering team can check fit for the HC-UPSA241 and identify what still needs review.
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