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- 10kW AC output for whole-home coverage. In battery mode the inverter delivers a rated output of 10,000W, enough to drive multiple heavy appliances at the same time during the evening peak or an outage.
- Dual MPPT solar input. Two independent PV inputs accept up to 5,500W each (up to about 11kW total), with a wide 100–500VDC working range, so you can harvest more from a two-string rooftop array.
- Stackable 5.12kWh modules. Add modules to scale from 10.24kWh up to 25.6kWh as your home's needs grow, using 550×500×170mm modules that stack in place.
- Grade A LiFePO4 cells. All-new Grade A LFP cells deliver a 6,000-cycle service life at 90% DOD — built for daily charge and discharge.
- Comprehensive certification. CE, UL, FCC, UN38.3 and MSDS documentation, as shown in the product data sheet.
- Intelligent, mobile and space-saving. The stack runs on rollers, uses a home-appliance style enclosure, and includes CAN/RS485/RS232 communication with optional Wi-Fi monitoring.
The KINPOWER K-STACK is a 10kW solar energy storage system that pairs a dual-MPPT hybrid inverter with stackable lithium iron phosphate (LiFePO4) battery modules. Available in standard configurations from 10.24kWh to 25.6kWh — that is 2 to 5 battery modules — this low-voltage stacked all-in-one unit is built for whole-home backup and higher daily electricity consumption. Every module uses all-new Grade A LFP cells rated for 6,000 cycles, with high-level safety protection from a built-in BMS. For households with larger solar arrays and heavier evening loads, it delivers the output and storage needed to run more appliances at once.
Why Choose the K-STACK 10kW Solar Energy Storage System
Models and Specifications
| Model | SMP-EU202-2 |
|---|---|
| Module Number | 2 PCS |
| Total Energy | 10.24kWh |
| Standard Voltage | 51.2V |
| Working Voltage | 43.2–57.6V |
| Discharge / Charge Current | 100A / 50A |
| DOD | 90% |
| PV Working Range | 100–500VDC |
| MPPT Range | 125–425VDC |
| PV Input Power | PV1 5500W / PV2 5500W |
| Max PV Current | PV1 22A / PV2 22A |
| Max Charging Current | 50A |
| Rated Input Voltage | 220/230/240VAC |
| Input Voltage Range | 90–275VAC |
| Max Bypass Current | 50A |
| Rated Output Voltage | 220/230/240VAC |
| Rated Output Power | 10000W (battery mode) |
| Total Product Dimension | 550×500×723mm |
| Communication | CAN/RS485/RS232/WiFi(Optional) |
| IP / Temp / Humidity | IP20 / 0–55℃ / −20–55℃ / ≤80% |
All standard configurations share a 51.2V low-voltage design, 90% DOD, IP20 protection, and the same 550×500×170mm module footprint.
How the 10kW System Supports a High-Usage Home
During the day, two PV strings feed the dual-MPPT inverter, which charges the battery modules and powers loads directly. In the evening, or when grid rates rise, the system discharges stored energy at up to 10kW so the home runs on battery power instead of the grid. With 25.6kWh of storage in the largest standard configuration, the system can store a full day's solar surplus for night-time and next-morning use. When the grid fails, the unit switches to battery mode to keep essential circuits running.
Stackable Design, Easy Expansion and Mobility
Each 5.12kWh module measures 550×500×170mm and weighs 46kg. The system is installed by stacking modules on a base unit with rollers, so it can be positioned and moved as needed. Total product height ranges from 723mm with 2 modules to 1233mm with 5 modules, and the series supports stacking up to 15 battery modules for future expansion beyond the standard configurations.
