FranklinWH aPower S 15kWh Integrated Hybrid Inverter Battery

About This Product

The FranklinWH aPower S 15kWh Integrated Hybrid Inverter Battery is an all-in-one residential energy storage solution combining lithium iron phosphate (LFP) battery technology with a built-in hybrid solar inverter. Designed for US residential solar and backup power installations, the aPower S provides 15 kWh of usable energy storage and supports direct connection of solar PV panels through four integrated MPPT inputs.

The FranklinWH aPower S delivers up to 11.5 kW of continuous AC output when supported by solar PV, or 10 kW when operating from battery power alone. It supports 120/240 Vac and 120/208 Vac single-phase electrical systems, offering a flexible platform for new solar installations and home energy storage projects. Integration with compatible FranklinWH energy management equipment enables coordinated solar generation, battery operation and backup power management.

Who This Product Suits

The FranklinWH aPower S is suited to homeowners seeking an integrated solar and battery storage system for energy independence, solar self-consumption and backup power. Its combined inverter and battery design makes it particularly suitable for new residential solar installations where a consolidated energy storage solution is preferred over separate components.

The system is also suitable for professional solar installers designing projects requiring substantial battery capacity, direct DC solar integration and compatibility with FranklinWH home energy management equipment. Applications include time-of-use energy management, backup of selected household circuits and appropriately designed whole-home backup systems.

Final installation requirements, system compatibility, backup load capacity and electrical protection must be assessed by a qualified installer in accordance with applicable NEC and local electrical codes.

Specifications Explained

• Battery capacity: 15 kWh of usable energy storage per aPower S unit.
• Battery chemistry: Lithium iron phosphate (LFP), providing a durable battery platform designed for residential energy storage.
• Integrated hybrid inverter: Combines solar inverter functionality and battery storage in a single enclosure.
• Continuous discharge power: Up to 11.5 kW with supported solar PV contribution, or 10 kW from battery power alone, subject to the installed model and operating conditions.
• Peak discharge power: Up to 15 kW for 10 seconds, helping support temporary high-demand household loads.
• Charging power: Up to 8 kW continuous battery charging power.
• Solar input: Supports up to 20 kW of solar PV STC input capacity, subject to the manufacturer’s electrical design limits.
• MPPT inputs: Four integrated MPPT trackers with a maximum operating current of 15 A per MPPT.
• AC configuration: Supports 120/240 Vac and 120/208 Vac single-phase electrical systems at 60 Hz.
• Round-trip efficiency: Approximately 90.5% under the manufacturer’s specified test conditions.
• Expandable storage: Compatible FranklinWH system configurations can support up to 15 aPower S units per aGate, providing up to 225 kWh of total usable storage.
• Installation environment: Suitable for indoor and outdoor applications, with protective enclosure design and environmental ratings appropriate to the manufacturer’s installation requirements.
• Mounting: Supports wall-mounted or floor-mounted installation in accordance with manufacturer specifications.
• Manufacturer warranty: 15 years or 60 MWh aggregate warranted energy throughput, whichever occurs first, subject to FranklinWH warranty terms and conditions.

Summary

The FranklinWH aPower S 15kWh Integrated Hybrid Inverter Battery combines high-capacity residential battery storage with direct solar PV integration and powerful AC output in one consolidated energy storage system.

With 15 kWh of usable storage, up to 11.5 kW continuous output under supported operating conditions, four integrated MPPTs and a 15-year limited manufacturer warranty, the aPower S provides a practical solution for modern US solar-plus-storage installations.

For homeowners and installers seeking an expandable energy storage platform with solar self-consumption, energy management and backup capability, the FranklinWH aPower S offers a flexible approach to residential energy independence. Final system design should account for compatible FranklinWH components, electrical service requirements, solar array configuration and planned backup loads.

Further Information From The Manufacturer

The FranklinWH aPower S is an integrated residential solar and battery storage device featuring a built-in hybrid inverter, lithium iron phosphate battery chemistry and direct solar PV connectivity. The system is designed to operate with compatible FranklinWH energy management equipment and can be configured for solar self-consumption, time-of-use optimization and backup applications.

Specifications are based on published FranklinWH product information. Equipment ratings, installed configuration, compatibility and warranty eligibility should be confirmed against the applicable manufacturer documentation. Listed dimensions and weight refer to the product unit, not packaged shipping dimensions.

About FranklinWH

FranklinWH is an energy storage technology company specializing in residential battery systems, home energy management and integrated solar-plus-storage solutions. The company develops its Franklin Home Power platform to help homeowners manage electricity consumption, solar generation and backup power through coordinated battery storage and intelligent energy controls.

Its product range includes the aPower battery family, aGate energy management equipment and the FranklinWH monitoring application. FranklinWH systems are designed to support residential energy independence, flexible battery expansion and dependable backup power across a wide range of US home installations.