APsystems APstorage 10.24kWh Battery Storage Kit

11.4 kW Inverter + 10.24kWh Lithium Battery ELS-11.4 / APbattery-51.2V/10.24kWh-U

MPNs: ELS-11.4 + APbattery-51.2V/10.24kWh-U

Complete Home Battery Backup & Energy Storage Solution

The APsystems APstorage Energy Storage System combines the powerful ELS-11.4 Power Conversion System (PCS) with the APstorage 10.24kWh Lithium Iron Phosphate Battery, creating a complete residential energy storage solution for backup power, self-consumption, time-of-use savings, and energy independence.

Designed specifically for homeowners who want to add battery storage to an existing solar system—or build a new AC-coupled storage system—the APstorage platform delivers 11.4kW of continuous output power, 17.1kW peak backup capability, and 10.24kWh of expandable battery storage in a safe, intelligent, and scalable package.

Unlike traditional hybrid inverters, the ELS-11.4 is an AC-coupled battery inverter and Power Conversion System (PCS), making it ideal for homeowners who already have solar installed and want to add backup power without replacing their existing solar inverter.

This Kit Includes

• (1) APsystems ELS-11.4 PCS Power Conversion System
• (1) APsystems APbattery-51.2V/10.24kWh-U Lithium Battery
• Integrated Battery Management System (BMS)
• CAN / RS485 Communications
• Wall-Mount Hardware
• APstorage Monitoring & Energy Management Platform Compatibility

Why Choose the APstorage Energy Storage System?

Add Battery Backup to Existing Solar

The ELS-11.4 is purpose-built as an AC-coupled storage solution, allowing homeowners to add battery backup to existing solar systems without replacing their current string inverter or microinverter system.

Perfect for:

• Existing grid-tied solar systems
• Enphase systems
• APsystems microinverter systems
• SolarEdge systems
• SMA systems
• New solar-plus-storage installations

Powerful Whole-Home Backup Performance

At the heart of the system is the ELS-11.4 PCS, delivering:

• 11.4kW Continuous Output Power
• 17.1kW Peak Backup Power
• 120/240V Split-Phase Output
• UPS-Level Transfer Time (<10ms)

This performance allows the system to support critical household loads during outages, including refrigeration, lighting, internet, well pumps, and many HVAC applications.

10.24kWh of Premium Energy Storage

The included APstorage battery utilizes premium CATL Lithium Iron Phosphate (LiFePO4) cells, providing exceptional safety, cycle life, and long-term reliability.

Battery specifications include:

• 10.24kWh Storage Capacity
• 51.2V Nominal Voltage
• 200Ah Capacity
• 6.14kW Continuous Charge Power
• 6.14kW Continuous Discharge Power
• 8.19kW Peak Discharge Power

Intelligent Energy Management

The APstorage platform provides multiple operating modes that help homeowners maximize savings and energy independence.

Available modes include:

• Backup Power Supply
• Self-Consumption
• Peak & Valley Time Shifting
• Peak Shaving

The integrated control platform automatically manages charging and discharging based on solar production, utility rates, and homeowner preferences.

Expand as Your Needs Grow

Need more storage in the future?

The APstorage battery platform supports:

• Up to 16 batteries in parallel
• Up to 163.84kWh total storage capacity

This allows homeowners to start with a single battery and expand over time as backup requirements increase.

Generator Ready

The ELS-11.4 includes a dedicated generator interface and dry-contact controls for seamless integration with standby generators, providing additional flexibility for extended outages.

Built for Indoor or Outdoor Installation

Both components are designed for demanding residential environments.

Features include:

• IP65 Weather-Resistant Enclosures
• Indoor or Outdoor Installation
• Smart Cooling Technology
• Optional Battery Self-Heating
• Charging Support Down to 23°F

Product Specifications

Dimensions & Weight

ELS-11.4 PCS

• Dimensions (L × W × H): 11.0 × 34.4 × 18.7 in
• Weight: 109 lbs

APstorage Battery

• Dimensions (L × W × H): 6.5 × 21.7 × 39.4 in
• Weight: 213.8 lbs

Combined System Weight

322.8 lbs

A Flexible Alternative to Traditional Hybrid Inverters

For homeowners who already have solar installed, the APsystems APstorage Energy Storage System provides a straightforward path to backup power and energy storage without replacing existing solar equipment. With 11.4kW of backup power, premium CATL lithium batteries, intelligent energy management, and future expandability to over 160kWh of storage, this system is built to deliver reliable energy security for years to come.

Key Features

• Complete 11.4kW battery backup system
• Includes 10.24kWh APstorage battery
• AC-coupled design for existing solar systems
• 17.1kW peak backup capability
• CATL LiFePO4 battery cells
• Expandable to 163.84kWh
• Generator-ready integration
• UPS-level backup transfer (<10ms)
• Indoor or outdoor installation
• UL1741SB, UL9540A, and IEEE1547 compliant
• IP65-rated equipment
• Smart energy management platform