Ares 8.5kWh All-in-One ESS with 5KW Inverter
Model: SCAS-5KW-8.5KWh

Product Overview
Is the SCAS-5KW-8.5KWh the Right Capacity for You?
Best suited for
The Ares 8.5kWh pairs a 25.6V 335Ah block with the same 5KW inverter and 77 by 45 by 29 centimeter enclosure as the 7.5kWh, adding about 900Wh of reserve on an identical footprint.
Typical loads this capacity handles
It supports the same fridge, lighting, electronics, and short appliance profile, with the extra capacity showing up as longer runtime rather than more simultaneous power. The 200A discharge keeps DC headroom strong.
Estimated runtime
Backup example: about 7.7kWh usable. A 400W average lasts close to 19 hours and an 800W load roughly 9 to 10 hours, a useful upgrade for homes that repeatedly ended an outage with little reserve in the smaller Ares units.
Sizing advice
Choose the 8.5kWh over the 7.5kWh when recharge is irregular or the household wants a deeper safety margin, since both occupy the same floor space. If the limiting factor is inverter power rather than runtime, the 6KW 10kWh or 12KW 15kWh models are the comparison.
Technical Specifications
- Power
- 5KW
- Battery Input Voltage
- 25.6V
- Inverter Output Voltage
- 230V
- Max PV Input Power
- 27A/9000W
- PV Input Voltage Range
- 60V-450V
- Max MPPT Charge Current
- 160A
- Voltage
- 25.6V
- Capacity
- 8576Wh(335Ah)
- Discharge Current
- 200A
- Battery Type
- LiFePO4
- Dimensions
- 77*45*29CM
- Manual
- 1 manual, 1 fuse
Key Advantages
- ✓5KW hybrid inverter with 230V AC output and surge headroom for motor starts
- ✓8576Wh(335Ah) of Grade A LiFePO4 storage with about 90% usable energy and 2000-4000 cycle life
- ✓Integrated MPPT controller: up to 9000W of solar input, wide 60V-450V PV range, 160A MPPT charge current, for fast solar recharge
- ✓Single floor-standing cabinet with battery, inverter, MPPT, and BMS pre-integrated and factory tested
- ✓5-year warranty with CE, UN38.3, and MSDS certification as standard
- ✓Factory-direct wholesale pricing and full OEM/ODM customization from CMJ Solar
Applications
Shipping & Warranty
Worldwide Shipping
Global shipping via sea freight and express courier. FOB Shenzhen or EXW Jiangmen terms available. Production lead time 10-20 days depending on order volume and customization requirements.
Warranty & Support
5-year warranty on battery systems. LiFePO4 cells rated for 2000-4000 cycles. BMS protection, WIFI monitoring, and technical support included. Spare parts available throughout warranty period.
Frequently Asked Questions
What warranty does this product come with?
The Ares 8.5kWh All-in-One ESS with 5KW Inverter comes with a 5-year warranty covering the LiFePO4 battery cells and integrated BMS. Our LiFePO4 cells are rated for 2,000-4,000 charge-discharge cycles, providing 5-10 years of reliable daily use under normal operating conditions. Spare parts and technical support are available throughout the warranty period.
What is the MOQ (Minimum Order Quantity)?
The MOQ is typically 20 units per model for standard products. Sample orders of 1 unit are welcome for testing and evaluation. For OEM/ODM custom packaging or private labeling, the MOQ is 500 units. Contact our sales team for specific pricing based on your order volume.
How long can the Ares 8.5kWh All-in-One ESS with 5KW Inverter power my home during an outage?
The Ares 8.5kWh All-in-One ESS with 5KW Inverter provides 8,576Wh of stored energy (approximately 7,718Wh usable at 90% depth of discharge). At an average essential-load draw of 500W (lights, router, refrigerator, and TV), it can sustain power for approximately 15.4 hours. At 1,000W, runtime is approximately 7.7 hours. Actual runtime depends on total connected load and usage patterns.
What appliances can the 5KW inverter handle?
The Ares 8.5kWh All-in-One ESS with 5KW Inverter features a 5KW hybrid inverter with 230V AC output. At 5KW, it can simultaneously run household appliances such as refrigerators (150-400W), LED lighting (10-50W), televisions (50-150W), computers (100-300W), and smaller air conditioning units. The inverter also supports surge power for motor startups. For high-power devices like electric ovens or heat pumps, verify the combined load does not exceed the continuous 5KW rating.
Can this system operate off-grid and with solar panels?
Yes. The Ares 8.5kWh All-in-One ESS with 5KW Inverter supports grid-tied, off-grid, and hybrid operation modes. It features an integrated MPPT solar charge controller with a PV input voltage range of 60V-450V, making it compatible with a wide range of monocrystalline and polycrystalline solar panel configurations. The system automatically switches to backup power during grid outages and can store excess solar energy for nighttime use.
What is included in the all-in-one design?
The Ares all-in-one ESS integrates the LiFePO4 battery bank, hybrid inverter, MPPT charge controller, and BMS into a single floor-standing cabinet. This pre-wired, factory-tested design significantly reduces installation time and complexity compared to separate component systems. It includes WIFI monitoring for remote system status tracking via mobile app.
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