Apollo A Series 20kWh All-in-One ESS
Model: SCAP-A-51.2-400

Product Overview
Is the SCAP-A-51.2-400 the Right Capacity for You?
Best suited for
The 20kWh Apollo A with a 6KW inverter is built for near-total energy independence in homes with moderate peak loads: four stacked modules carry a normal household through a full night and well into the next day, and support extended outages and light off-grid living.
Typical loads this capacity handles
The 6KW inverter covers ordinary fridge, lighting, entertainment, and intermittent appliance use, but not simultaneous climate and cooking loads; those homes need the 400P. With 9000W PV input, plan a sufficiently large solar array so the 20kWh bank refills in reasonable daylight.
Estimated runtime
Backup example: roughly 18kWh usable. A 600W average lasts about 30 hours and a 1000W load around 18 hours, delivering close to two days of normal essentials without recharge.
Sizing advice
Pick the 20kWh 6KW when autonomy is the main goal and the home does not run many high-wattage devices at once. It is a popular choice in regions with daily blackouts, where long duration matters more than powering every appliance simultaneously.
Technical Specifications
- Power
- 6KW
- Battery Input Voltage
- 51.2V
- Inverter Output Voltage
- 230V
- Max PV Input Power
- 27A/9000W
- PV Input Voltage Range
- 80V-500V
- Max MPPT Charge Current
- 120A
- Dimensions
- (60*40.5*19.5CM)*4
- Voltage
- 51.2V
- Capacity
- 20480Wh(400Ah)
- Discharge Current
- 400A
- Battery Type
- LiFePO4
Key Advantages
- ✓6KW hybrid inverter with 230V AC output and surge headroom for motor starts
- ✓20480Wh(400Ah) 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 80V-500V PV range, 120A MPPT charge current, for fast solar recharge
- ✓Stackable modular architecture: add 5kWh modules on site from 5kWh up to 30kWh without replacing the inverter
- ✓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 Apollo A Series 20kWh All-in-One ESS 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 Apollo A Series 20kWh All-in-One ESS power my home during an outage?
The Apollo A Series 20kWh All-in-One ESS provides 20,480Wh of stored energy (approximately 18,432Wh 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 36.9 hours. At 1,000W, runtime is approximately 18.4 hours. Actual runtime depends on total connected load and usage patterns.
What appliances can the 6KW inverter handle?
The Apollo A Series 20kWh All-in-One ESS features a 6KW hybrid inverter with 230V AC output. At 6KW, 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 6KW rating.
Can this system operate off-grid and with solar panels?
Yes. The Apollo A Series 20kWh All-in-One ESS supports grid-tied, off-grid, and hybrid operation modes. It features an integrated MPPT solar charge controller with a PV input voltage range of 80V-500V, 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.
Can I expand the battery capacity later?
Yes. The Apollo A series uses a modular design that allows you to add battery modules over time. Each module provides 400Ah at 51.2V. Capacity can be scaled from 5kWh up to 30kWh (or higher depending on the configuration) by stacking additional modules without replacing the existing system. This modular approach protects your initial investment and allows capacity to grow with your energy needs.
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