Sigenergy (SigenStor) Solar Batteries Scalable & Modular Energy Storage
Sigenergy (with their SigenStor line) provides modern solar battery storage systems designed for flexibility, safety, and integration with solar panels, inverters, and even EV charging. These are suited for homes wanting backup power, higher self-consumption of solar energy, or gradually growing storage systems over time.
Key Features & Technical Highlights
Here are some standout features of Sigenergy’s battery systems:
Lithium Iron Phosphate (LiFePO₄) chemistry — stable, safer, long-life battery cells.
Modular / stackable design — small battery packs (modules) that you can combine (stack) to reach higher capacities (from small homes to large residential / light commercial).
5-in-1 system — integrates several functions into one: battery pack, hybrid inverter / power conversion, energy management system (EMS), optional EV charger, etc. This simplifies setup and often improves cost / efficiency.
Strong safety & durability — multi-layer protection (over/under voltage, thermal management, etc.), weather protection (IP66 rating in many modules), designed for indoor or outdoor installation.
Scalability & expandability — you can start small (one module) and add more modules or even stacks later, without major rewiring.
Types / Models & Capacity Ranges
Sigenergy offers multiple module sizes and stacking options. Here are the main types and what wattage (storage) ranges customers can expect:
Module Sizes
Small module: ~5 kWh usable capacity (around 5.38 kWh total, ~5.2 kWh usable in many models).
Larger module: ~8 kWh usable capacity (around 8.06 kWh total, ~7.8 kWh usable).
Stacking / Capacity Scaling
Modules are stackable, up to 6 modules per stack, which means a single stack can go up to ~48 kWh in usable energy or close to that depending on the configuration.
Parallel stacking is also possible for some setups, allowing multiple stacks working together for even larger capacity (for larger homes or small commercial use).
Power / Output / Inverter Compatibility
Continuous discharge/charge power per module: ~2.5 kW for smaller (5 kWh) modules, higher (~4.0 kW) for larger (8 kWh) modules.
Peak / short-term power higher (for example, some peak outputs for short times in larger modules).
The system includes hybrid inverters capable of handling these batteries, often single-phase or three-phase mains.
What Makes Sigenergy a Good Option
Here are some advantages of choosing Sigenergy batteries:
High round-trip efficiency and good usable energy ratio (most of the rated storage is usable).
Fast backup / power outage switching in many units, ensuring power for essentials when grid power fails.
Optional EV charger modules (DC charging), and future-ready features like vehicle-to-home or vehicle-to-grid in some configurations.
Ten-year warranty is common, with manufacturers claiming long life cycles (many thousands of cycles) with minimal capacity degradatio