Sungrow PowerKeeper Secondary Accessory Kit - inc BMS + Base
This kit is used to support parallel expansion by adding additional battery towers within the Sungrow PowerKeeper C&I energy storage system.
Designed for commercial and industrial installations, the kit provides the essential components needed to add extra tower capacity. It includes a secondary BMS and an auxiliary battery stack base for use with Sungrow PowerKeeper STC 12.5-V1 modules.
The integrated BMS supports battery monitoring, communication, protection, and long-term system reliability, helping ensure safe and efficient operation as storage capacity is expanded.
Key features
- Suitable for commercial and industrial energy storage applications
- Auxiliary accessory kit for Sungrow PowerKeeper C&I battery systems
- Supports additional battery stack installation
It includes:
- PowerKeeper Secondary BMS (Upper Cover)
- Auxiliary PowerKeeper Base Unit
- Cable Management Base Unit
- Accessories
- Five-year standard product warranty
Learn More About Sungrow PowerKeeper System
Proven Experience, Trusted Partner
With over 1,000 C&I energy storage projects deployed globally, including 200+ projects across Europe, Sungrow brings deep field experience and end-to-end service capabilities to every installation.
One System, Multiple Applications
PowerKeeper adapts seamlessly to diverse C&I scenarios:
- PV + ESS
- PV + ESS + EV charging
- Microgrid & backup
- Stand-alone C&I energy storage
- Off-grid and hybrid applications
0 Waste: Modular by Design
PowerKeeper is designed to protect every customer’s investment through a highly flexible, modular configuration. Built on a 12.5 kWh module architecture, a single hybrid inverter supports 50–1000 kWh of storage with 2–8 hours of duration. For larger requirements, multiple inverters can be connected in parallel, enabling seamless and scalable system expansion.
This modular approach enables precise capacity matching across applications, from small supermarkets to large industrial facilities, maximising energy utilisation, reducing upfront costs, and improving system efficiency.
0 Outage: Continuous Power for Critical Operations
PowerKeeper delivers seamless backup power to keep businesses running without interruption, even during grid failures. It supports critical loads in supermarkets, factories, warehouses, and commercial buildings.
- 10 ms ultra-fast switching to off-grid mode during grid outages
- Built-in Automatic Transfer Switch (ATS) supporting up to 250 kW load
- No external ATS cabinet required, saving space, time, and cost
7 Ups: A Better Experience at Every Step
1. Easy Installation
2. Fast Deployment & Commissioning
3. Reliable Operation in Harsh Environments
4. Simple Maintenance
5. Profit Optimisation
6. Comprehensive Safety
7. Long-Term Value
| High / Low Voltage Battery | High Voltage |
| Battery / System Model | Sungrow PowerKeeper (C&I) |
| Brand | Sungrow |
| Battery End User | Commercial/Industrial |
| Battery IP Rating | IP66 |
| Product Weight (Kg) | 67 |