Dyness STACK100 5.1kWh — Modular LiFePO4 Battery
The Dyness STACK100 5.1kWh is a modular LiFePO4 battery unit designed for scalable, parallel low-voltage energy storage. Used in conjunction with the STACK100 BDU, multiple modules can be stacked in parallel to build a system sized precisely to your requirements — from a practical residential backup solution to the full 60kWh STACK100 large-scale configuration.
With 8,000 rated cycles, 95% depth of discharge, and a consistent 51.2V LV architecture, the STACK100 module delivers high-performance, long-life storage for both residential and light commercial solar applications across South Africa.
5.12kWh LiFePO4 Storage at 95% DoD
- Rated Capacity: 5.12kWh / 100Ah at 51.2V nominal, with 4.86kWh usable at 95% depth of discharge. LiFePO4 chemistry ensures superior thermal stability, deep-cycle durability, and consistent output throughout the battery's service life.
8,000-Cycle Lifespan
- Cycle Life: Rated for 8,000 charge/discharge cycles under standard test conditions — significantly extending operational lifespan compared to conventional LiFePO4 solutions and delivering outstanding long-term value for daily-cycling solar systems.
Scalable to 60kWh — Parallel Stacking Architecture
- Scalability: Stack multiple STACK100 modules in parallel via the STACK100 BDU to build systems up to 60kWh. The parallel architecture maintains a stable 51.2V LV nominal voltage regardless of the number of modules installed — no high-voltage handling or specialist cabling required.
Uniform, Space-Efficient Form Factor
- Physical: Each module measures 590×133.5×390mm and weighs 47kg, with a consistent profile that simplifies stacking, installation, and future capacity expansion. Designed to integrate cleanly with the STACK100 BDU in a vertical stack layout.
STACK100 BDU Required for System Operation
- System Requirement: Each STACK100 system requires one Dyness STACK100 BDU (Battery Distribution Unit), which serves as the central controller and inverter communication hub for all connected modules. The BDU is sold separately — confirm your full system configuration with your installer before ordering.
Wide Inverter Compatibility
- Compatibility: Compatible with a range of hybrid inverters when used as part of a complete STACK100 system with the BDU. Always verify inverter and system compatibility with your installer prior to purchase.
E&OE. Product specifications are subject to change without notice. Please refer to the official manufacturer datasheet to confirm all specifications before purchase or installation.
| Identification | |
|---|---|
| Brand | Dyness |
| Model | STACK100 (S51100) |
| Capacity & energy | |
| Total energy | 5.12 kWh |
| Usable energy | 4.86 kWh |
| Depth of discharge (DoD) | 95 % |
| Capacity | 100 Ah |
| Electrical | |
| Nominal voltage | 51.2 V |
| Voltage range | Not specified |
| Max charge current | 100 A |
| Max discharge current | 100 A |
| Continuous power | 5.12 kW |
| Peak / surge power | 125 A, 2 min |
| Performance | |
| Chemistry | LiFePO4 |
| Cycle life | ≥8,000 cycles |
| Round-trip efficiency | Not specified |
| System | |
| Scalable / parallel | 3–15 modules per tower; up to 12 towers parallel |
| Communication | CAN / RS485 |
| BMS | Integrated smart BMS (via BDU) |
| Mechanical | |
| Dimensions (W × H × D) | 590 × 133.5 × 390 mm |
| Weight | 47 kg |
| IP rating | IP20 |
| Mounting | Floor / stackable |
| Environment & compliance | |
| Operating temperature | -20 to +55 °C |
| Certifications | CE, IEC 62619, IEC 63056, UN38.3 |
| Warranty | 10 years |
