Let the sun power your home
Be energy independent
Combining solar, storage and EV charging, offers an all-in-one Home Energy Solution that helps you lower utility bill and reliance on the grid.
Simple to install, easy to use, smart & safe all around, our system is versatile and scalable to meet every need.
Illuminate Your Home with Solar Power
Embrace Energy Autonomy
At night
Enjoy Energy


S40K
Rack Mounting Residential Energy Storage.
Redefining energy storage, charging, and utilization.
S40K Single Battery
Nominal Energy:5.12kWh
Nominal Voltage:51.2 V
Enclosure:IP65
Cycle Life:8000 times
Communication Method:CAN、RS485、WiFi
Multiple Stacks, Flexible Deployment
Each battery supports 2-8 modules stacked.
Individual battery capacity: 10.24 kWh - 40.96 kWh.
Supports up to 15 parallel units.
Let the sun power your homeBe energy independent
Combining solar, storage and EV charging, offers an all-in-one Home Energy Solution that helps you lower utility bill and reliance on the grid.
Simple to install, easy to use, smart & safe all around, our system is versatile and scalable to meet every need.
Self-Consumption
Charge, store, and power your home system seamlessly
Peak Shaving
Harness fluctuating rates to reduce your electric bill
Energy Surplus
Sell your excess power back to the grid and earn
Energy Outage
Stay self-reliant during peak times or grid downtimes
At nightEnjoy Energy
Self-Consumption
Charge, store, and power your home system seamlessly
Peak Shaving
Harness fluctuating rates to reduce your electric bill
Energy Surplus
Sell your excess power back to the grid and earn
Energy Outage
Stay self-reliant during peak times or grid downtimes



S40K
Rack Mounting Residential Energy Storage.
Redefining energy storage, charging, and utilization.
S40K Single Battery
Nominal Energy:5.12kWh
Nominal Voltage:51.2 V
Enclosure:IP65
Cycle Life:8000 times
Communication Method:CAN、RS485、WiFi
Learn moreMultiple Stacks, Flexible Deployment
Each battery supports 2-8 modules stacked.
Individual battery capacity: 10.24 kWh - 40.96 kWh.
Supports up to 15 parallel units.
Learn moreKowint Network
Learn More
Kowint APP
Learn MoreRecent News
-
May 09, 2026 Peak Shaving with BESS: A Complete Guide
For many commercial and industrial facilities, electricity costs are not only determined by how much energy is consumed, but also by when and how quickly that energy is used. Short periods of high pow···
-
Apr 15, 2026 How BESS Reduces Demand Charges for Businesses
Demand charges are one of the largest and least understood components of commercial electricity costs. For many businesses, a single peak demand event can significantly increase monthly energy bills.A···
-
Apr 15, 2026 UL-Certified KS-233A BESS for Distributed Energy Storage and VPP Deployment
As distributed energy resources continue to expand across North America, the demand for safe, compliant, and scalable BESS (Battery Energy Storage Systems) is rapidly increasing. For EPC con···
Residential Energy Storage System
Commercial & Industrial BESS
Residential inverter


