SimpliPhi SPHI-ESS-25-12 – 24.9 kWh Energy Storage System with 5 × 4.9 kWh Batteries, 12 kW Hybrid Inverter, EnergyTrak & AGS
The SimpliPhi SPHI-ESS-25-12 is a high-capacity, fully integrated energy storage solution featuring five 4.9 kWh Lithium Ferro Phosphate (LFP) batteries, a 12 kW hybrid inverter, and the EnergyTrak control platform. Designed for off-grid, grid-tied, and backup power, it offers 24.9 kWh of scalable storage with intelligent monitoring, remote management, and industry-leading safety.
With IP65-rated components, closed-loop communication, and a 10-year warranty, it ensures reliable, efficient, and expandable energy storage for residential and commercial use.
Key Features
High-Capacity Energy Storage
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24.9 kWh storage with 5 × 4.9 kWh LFP batteries.
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Expandable up to 72 batteries (358.5 kWh total capacity).
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Supports large electrical loads with 12 kW inverter output.
EnergyTrak Intelligent Control
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Mobile app with real-time system monitoring (Wi-Fi, Ethernet, Bluetooth).
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5-step commissioning for fast, simple setup.
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Remote reconfiguration and automatic OTA updates.
12 kW Hybrid Inverter
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Works with solar, grid, or generator in AC/DC coupled configurations.
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<8 ms transfer time for uninterrupted power.
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Dual MPPT, digital LCD interface, and EnergyTrak-enabled for remote access.
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Expandable up to 54 kW total system output.
Safe & Long-Lasting LFP Batteries
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10,000+ cycles at 80% DoD with 80% retained capacity after 10 years.
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96% round-trip efficiency, cobalt-free, no thermal runaway risk.
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Built-in BMS with overcurrent protection.
Rugged, All-Weather Design
SimpliPHI 6 kW Inverter
Hybrid Inverter with integrated MPPT works seamlessly with the SimpliPHI 4.9 Battery, EnergyTrak, and Mobile App to deliver the most efficient, scalable, easy-to-use backup or primary power system available for homes and businesses.
- Multiple Energy Sources - Designed to pair with solar, grid or generator in either AC or DC coupled configurations
- Versatile - On the grid or off, with or without batteries
- Scalable - Add up to 9 inverters for increased load support for a total of 54 kW
- Seamless Transition - Less than 8 millisecond switchover time protects sensitive electronics and minimizes downtime
- Digital interface - Easy programming and monitoring of primary system functions on the LCD screen
- EnergyTrak Enabled - Remote monitoring and quick 5-step commissioning through EnergyTrak mobile app
- IP 65 - rated for indoor or outdoor installations
- Warranty - Up to 10-year limited warranty*
- Product Brochure | Download
- Installation Manual | Download
- Specification Sheet | Download
EnergyTrak Control System
Provides advanced system monitoring through a sophisticated mobile app for smartphones or tablets, delivering real-time status and updates with intuitive control over the entire SimpliPHI Energy Storage System.
- Simple, Smart, and Reliable - EnergyTrak offers an ever-improving platform to maximize value over the life of the system
- Streamlined - 5-step commissioning for fast, frustration-free setup from a mobile device
- Fleet Management - Visibility into customer installations to maximize system uptime
- Remote Re-configuration - Minimizes the need for site visits on commissioned systems
- Over-the-Air Updates - Automatically ensures systems and apps are secure and code-compliant with the latest features
- Connectivity - Wi-Fi, ethernet, and Bluetooth for simple, dynamic communication
- Product Brochure | Download
- Installation Manual | Download
SimpliPHI 4.9 Battery
Leveraging over a decade of battery expertise using Lithium Ferro Phosphate (LFP) chemistry, the SimpliPHI 4.9 Battery delivers efficient, reliable, and safe advanced-level power storage.
- Scalable - Up to 72 batteries with a total capacity of 358.5 kWh
- Closed-Loop Communications - Seamlessly integrate with other system components to streamline programming and ensure peak performance
- Battery Management System (BMS) - Proprietary state-of-the-art BMS protects the battery, creates additional safety, and extends cycle life
- Long Lifespan - 10,000 cycles at 80% DoD
- Maximum Energy Throughput - 34.9 MWh with 96% round trip efficiency increases the value of your storage investment over the life of the battery
- Retained Capacity - 80% remaining capacity after 10 years of use
- Safety-tested - Lithium Ferro Phosphate (LFP) chemistry is industry proven to reduce thermal runaway and fire propagation in residential and commercial installations
- IP 65 - Rated for indoor or outdoor use
- Warranty - 10-year limited warranty*
- Product Brochure | Download
- Installation Manual | Download
ESS Series Comparison
| Model |
Batteries |
Total Capacity (kWh) |
Total Power (kW) |
Inverters (6 kW) |
Includes AGS |
| SPHI-ESS-10-6 |
2 × 4.98 kWh |
9.96 |
6 |
1 × 6 kW |
Yes |
| SPHI-ESS-15-6 |
3 × 4.98 kWh |
14.94 |
6 |
1 × 6 kW |
Yes |
| SPHI-ESS-20-6 |
4 × 4.98 kWh |
19.92 |
6 |
1 × 6 kW |
Yes |
| SPHI-ESS-25-6 |
5 × 4.98 kWh |
24.90 |
6 |
1 × 6 kW |
Yes |
| SPHI-ESS-20-12 |
4 × 4.98 kWh |
19.92 |
12 |
2 × 6 kW |
Yes |
| SPHI-ESS-25-12 |
5 × 4.98 kWh |
24.90 |
12 |
2 × 6 kW |
Yes |
| SPHI-ESS-30-12 |
6 × 4.98 kWh |
29.88 |
12 |
2 × 6 kW |
Yes |
| SPHI-ESS-30-18 |
6 × 4.98 kWh |
29.88 |
18 |
3 × 6 kW |
Yes |
| SPHI-ESS-40-18 |
8 × 4.98 kWh |
39.84 |
18 |
3 × 6 kW |
Yes |
