20kWh Whole-Home Battery | High-Capacity Storage | ChenXin
20kWh Whole-Home Battery | High-Capacity Storage | ChenXin
ChenXin 20kWh Home Battery — Flagship Storage for Complete Off-Grid Living
The ChenXin 20kWh is our flagship whole-home battery, engineered for large homes, energy-intensive households and full off-grid properties. 20.48kWh of LiFePO4 capacity with 15kW continuous / 30kW peak output runs an entire household — including air conditioning, well pumps and kitchen appliances — for 24–48 hours without the grid.
Built with industrial-grade Grade-A LFP cells and an advanced multi-layer BMS, it handles cell balancing, over-current and thermal management around the clock. The stackable modular architecture means you can start with one unit and expand later, making it ideal for growing solar installations and businesses such as small shops, farms and remote lodges.
At a fraction of Western premium pricing, the 20kWh delivers the same 6,000+ cycle longevity and 10-year warranty, with real-time WiFi/Bluetooth monitoring. It's the system homeowners choose when "good enough" isn't enough — and when energy independence is non-negotiable. Compare 5kWh vs 10kWh vs 20kWh sizes →
Technical Specifications
| Specification | Detail |
|---|---|
| Battery Capacity | 20.48 kWh (400Ah @ 51.2V) |
| Chemistry | LiFePO4 (LFP) — Grade A cells |
| Max Output | 15 kW continuous / 30 kW peak |
| Cycle Life | 6,000+ cycles @ 80% DoD |
| Round-Trip Efficiency | 95%+ |
| Architecture | Stackable / modular, expandable |
| Operating Temperature | -20°C to 55°C |
| Dimensions / Weight | 600 × 450 × 680 mm / 160 kg |
| Monitoring | WiFi + Bluetooth, communication hub |
| Certifications | CE, FCC, UL ready, UN38.3 |
| Warranty | 10 years |
Not sure which size you need?
Read our kWh sizing calculator or compare all home battery systems. Questions? Contact our team — replies within 24 hours.
Free worldwide shipping · 30-day return policy. Includes heavy-duty mounting kit, communication hub, WiFi module and EN/RU/ES manual.
Frequently Asked Questions
What can a 20kWh battery power in a home?
A 20kWh ChenXin battery can power an entire average home for 24+ hours, including air conditioning, electric cooking, water heating, and all standard appliances. It's designed for whole-home backup and complete energy independence.
Is the 20kWh system suitable for commercial use?
Yes. The 20kWh system is suitable for small businesses, shops, and small office environments. Multiple units can be paralleled for larger commercial requirements up to 80kWh or more.
How many solar panels do I need for a 20kWh battery?
For full daily recharge, we recommend 8-12 x 400W solar panels (3.2-4.8kW array). This generates 15-25kWh per day depending on sunlight conditions, sufficient to fully recharge the battery and power daytime loads.
Does the 20kWh battery support three-phase power?
Yes, when paired with a compatible three-phase inverter, the 20kWh system supports both single-phase and three-phase installations. Contact our team for specific inverter compatibility for your region.
What is the ROI on a 20kWh system?
At $4,299, the 20kWh system costs approximately $210/kWh — among the lowest in the industry. Typical payback periods are 4-7 years through bill savings and generator fuel elimination, with 15-20 years of expected service life.