Battery Product
This comparison covers seven leading residential battery storage systems from major manufacturers, highlighting their specifications, features, and capabilities.
Battery Product
Tesla Powerwall 3
The Tesla Powerwall 3 is a fully integrated solar and battery storage system designed to enhance energy independence and sustainability. It stores excess solar energy or grid power for use during outages or peak pricing periods, helping homeowners reduce electricity costs and reliance on the grid. With a sleek, compact design, it supports up to 20 kW DC solar input and delivers 11.04 kW AC continuous power, making it suitable for most households.
Key advantages include its modular scalability, allowing up to four units to be connected for expanded capacity. The system is managed through the Tesla App, which provides real-time monitoring and customizable energy settings. It also features high efficiency, with 89% solar-to-battery and 97.5% solar-to-grid conversion rates. Built for durability, it operates in temperatures from -20°C to 50°C and comes with a 10-year warranty.
Battery Product
Sungrow SBR Series
The Sigen Energy Controller is a high-performance energy management system designed for both single-phase (3.0–6.0 kW) and three-phase (5.0–25.0 kW) applications. It integrates seamlessly with SigenStor batteries, offering precise control over energy flow, backup power, and grid interaction. The system excels in off-grid and hybrid setups, supporting multi-source block starts and DC/AC ratios up to 2:1 for optimized solar utilization.
Paired with SigenStor batteries (5.0–25.0 kWh), the system provides flexible capacity expansion and high-efficiency storage. The batteries use LiFePO4 chemistry, ensuring long cycle life and safety. The entire setup is IP66-rated, making it suitable for outdoor installations in harsh conditions. With real-time monitoring via the mySigen App, users can track energy usage and adjust settings remotely.
Battery Product
Sigen Energy Controller
The Sigen Energy Controller combines an 8-10 kW single-phase inverter with support for up to 50 kWh battery capacity. Featuring 16 kW PV input, 3 MPPTs, and IP66 protection, it enables on/off-grid compatibility and DC/AC ratios up to 2. Paired with SigenStor batteries (5-25 kWh), this system offers 2500-6000W charge/discharge power, CAN communication, and compliance with IEC/EN standards. Ideal for Australian homes, it includes smart air cooling, a 10-year warranty, and integration with the mySigen App for real-time energy optimization.
Battery Product
Alpha ESS SMILE-G3-S5 Hybrid Inverter
The Sigen Energy Controller is a high-performance energy management system designed for both single-phase (3.0–6.0 kW) and three-phase (5.0–25.0 kW) applications. It integrates seamlessly with SigenStor batteries, offering precise control over energy flow, backup power, and grid interaction. The system excels in off-grid and hybrid setups, supporting multi-source block starts and DC/AC ratios up to 2:1 for optimized solar utilization.
Paired with SigenStor batteries (5.0–25.0 kWh), the system provides flexible capacity expansion and high-efficiency storage. The batteries use LiFePO4 chemistry, ensuring long cycle life and safety. The entire setup is IP66-rated, making it suitable for outdoor installations in harsh conditions. With real-time monitoring via the mySigen App, users can track energy usage and adjust settings remotely.
Battery Product
SolarEdge Energy
Optimized for SolarEdge Energy Hub inverters, the 10kWh Energy Bank delivers 9700 Wh usable energy with 94.5% round-trip efficiency. Designed for on-grid and backup power, this DC-coupled battery features 5000W continuous output (7500W peak for 10 seconds) and wireless communication to reduce installation complexity. Its IP55-rated enclosure supports indoor/outdoor use, while certifications like IEC 62619 and UL1973 ensure safety.
Expandable with up to 3 batteries per inverter, it includes a 10-year warranty and compatibility with SolarEdge’s ecosystem for unified energy management via a single app.
Battery Product
SAJ B2
The SAJ B2 High Voltage Battery offers flexible energy storage with stackable capacity from 5 kWh to 25 kWh, ideal for residential and commercial use. Built with LiFePO4 cells and a 95% depth of discharge (DoD), it ensures maximum energy utilization.
Its modular design supports wall or ground mounting, IP65 protection, and CAN communication for seamless integration. With 30A continuous charge/discharge current, natural convection cooling, and certifications like IEC 62619, this battery delivers reliability in temperatures from -10°C to 50°C. Backed by a 5-year product and 10-year performance warranty, it’s a durable solution for scalable solar storage
Battery Product
Alpha ESS SMILE-G3-B5
The Alpha ESS SMILE-G3-B5 is a modular residential energy storage system designed for scalability and reliability. With 5 kW power output and a 10.1 kWh base capacity (expandable to 60.5 kWh), it supports 24/7 monitoring and grid-forming capabilities for VPP integration. Featuring LiFePO4 (LFP) battery chemistry, IP65 outdoor protection, and a hybrid inverter (5000 W max charging/discharging), this system ensures high efficiency (97.3%) and UPS backup during outages.
Enjoy 5-year product and 10-year battery warranties, Ethernet/WiFi connectivity, and compliance with IEC/EN safety standards. Perfect for homes seeking sustainable, future-proof energy independence.
Battery Storage System Comparison Summary
| Feature | Tesla PW3 | Sungrow | Sigenergy | Alpha S5 | Alpha B5 | SAJ | SolarEdge |
|---|---|---|---|---|---|---|---|
| Type | AC-coupled | HV Battery | HV Battery | Hybrid | AC-coupled | HV Battery | DC-coupled |
| Capacity | 13.5kWh | 6.4-25.6kWh | 5-80kWh | 10.1-60.5kWh | 10.1-60.5kWh | 5-25kWh | 9.7kWh |
| Power | 11.04kW | Up to 15.36kW | 4-6kW | 5kW | 5kW | 3.84-15.36kW | 5kW |
| Chemistry | LFP | LFP | LFP | LFP | LFP | LFP | LFP |
| Warranty | 10y | 10y | 10y | 5+10y | 5+10y | 5/10y | 10y |
| Protection | IP55/IP67 | IP55 | IP66 | IP65 | IP65 | IP65 | IP55 |
| Mounting | Wall/Floor | Floor | Wall/Floor | Wall | Wall | Wall/Floor | Wall/Floor |
Selection Considerations
For Solar Integration:
Tesla PW3 – Fully integrated with Tesla solar systems.
SolarEdge – Optimized for SolarEdge inverters.
For High Capacity:
Sigenergy – Up to 80kWh capacity.
AlphaESS – Up to 60.5kWh capacity.
For High Power Output:
Tesla PW3 – 11.04kW continuous power.
Sungrow – Up to 15.36kW power output.
For Modularity:
SAJ – Precise capacity scaling.
Sungrow – Flexible capacity options.
For Warranty:
Most brands – Offer 10-year battery warranties.
AlphaESS – 5+10 year warranty structure.
All systems use safe LFP chemistry and are suitable for residential applications, with varying degrees of solar integration and scalability options.
Get in Touch with Us
Have questions or need assistance? Our team is here to help! Contact us today, and we’ll get back to you as soon as possible