FranklinWH aPower S 15kWh Hybrid Battery System

The aPower S is a battery storage device with integrated inverters to support a direct connection to solar (PV) panels. The front wiring design makes installation easier and more efficient. The aPower S also supports parallel AC-coupled connection with FranklinWH aPower 2 batteries to expand power and capacity for homes at the same time. It can be flexibly deployed according to customer requirements. Excellent load adaptability provides the best backup experience to users. The aPower S combines a 15 kWh LFP battery, 11.5 kW continuous output, 20 kW direct solar input, and four built-in MPPTs in an integrated solar and storage system. Expandable up to 225 kWh per aGate, the system supports DC-coupled solar, AC coupling with the FranklinWH System, generator or V2L integration, and indoor or outdoor installation. The load start capacity up to 185A LRA, which can provide whole home backup with a single battery or parallel units. It provides a 60 MWh throughput or 15-year warranty, helping users to easily achieve reliable energy independence and freedom over the long term. The aPower S is an integrated solar and storage solution for new installations: aPower S delivers a unified energy ecosystem with unmatched efficiency, higher return on investment (ROI), and lower lifetime costs compared to conventional systems. Its fully integrated design enables direct solar connection, maximizing solar energy capture, storage, and utilization. Whole-home and Partial-home backup supported DC-Coupled and AC-Coupled supported Key Features Direct Solar Connection Up to 20kW direct solar input and 4 MPPTs adapt to complex solar setups Fast Setup Simplified installation and AI commissioning as fast as 3 mins Stronger Load-handling 11.5kW continuous output with PV , up to 185 A LRA Greater capacity and expansion 15kWh per unit, up to 15 units parallel with an aGate to get 225kWh Reliable Backup Zero interruption and UPS-level power quality Flexible Expansion Compatible with V2L with aHub or generators, previous aPower models FranklinWH aPower S Specifications Battery & Energy Storage Battery Chemistry: Lithium Iron Phosphate (LFP) Usable Energy: 15 kWh per unit System Expansion: Up to 15 units / 225 kWh per aGate Charge Power: 8 kW continuous Discharge Power with PV: 11.5 kW continuous Battery-Only Discharge Power: 10 kW continuous Round Trip Efficiency: 90.5% Warranty: 15 years or 60 MWh throughput SKU: APRS-10K15V1-US AC Electrical Nominal AC Voltage: 120/240 V, 120/208 V Frequency: 60 Hz Coupling: Hybrid-Coupled Phase: 2 W + N + PE CEC Efficiency (Solar to Home/Grid): 97.5% Short-Circuit Current Rating: 10 kA AC Metering: Revenue Grade, ±0.5%, ANSI C12.20 User Interface: FranklinWH App Operating Modes: Self-Consumption, Time of Use, Emergency Backup Solar PV Input Maximum Solar STC Input: 20 kW PV DC Input Voltage Range: 60–600 Vdc MPPT Voltage Range: 90–480 Vdc MPPTs: 4 Maximum Current per MPPT: 15 A Maximum Short-Circuit Current per MPPT: 20 A Maximum Power per MPPT: 5 kW Maximum Continuous Total MPPT Output: 15 kW Backup & Off-Grid Peak Output Power: 15 kW for 10 seconds Transient Load Capacity: 25 kW for 1 second Load Start Capability: 185 A LRA Load Imbalance Ratio: 100% THDU: <1% Voltage Regulation Accuracy: ±1% Frequency Accuracy: ±0.1 Hz Mechanical Dimensions (H × W × D): 45.2 × 29.5 × 11.8 in (1149 × 750 × 300 mm) Weight: 388 lb (176 kg) Weight Without Cover: 365 lb (166 kg) Mounting: Wall or Floor Mount Cooling: Natural Cooling Environmental Installation: Indoor / Outdoor Enclosure Type: Type 3R Ingress Protection: IP55 (Wiring), IP67 (Battery Pack & Inverter) Operating Temperature: -4°F to 122°F (-20°C to 50°C) High-Temperature Operation: Up to 131°F (55°C), derated output Humidity: Up to 100% RH, condensing Maximum Altitude: 9,843 ft (3,000 m) Certifications UL9540, UL9540A, UL1973, UL1741, UL1741 SB, UL1741 PCS, UL1741 Multimode, UL1741 CRD, UL3141, UL1699B, UL1998, UN38.3, IEEE 1547, IEEE 1547.1, CSA 22.2 No.107.1 Download Datasheet FranklinWH aPower S datasheet User manual aPower S Installation Guide Certification aPower UL9540A aPower UL9540 aPower UL1741 Warranty aPower S Warranty About FranklinWH FranklinWH is focused on home energy management and storage solutions that provide safety, reliability and energy freedom for homes. The FranklinWH System integrates solar, battery, grid, generator and EV power sources, intelligently managing them to optimize energy supply for maximum efficiency and security. Designed with simplicity in mind, the system is easy to install, operate, and maintain, making home energy management and storage accessible for every home. FranklinWH Energy Storage is the manufacturer of the FranklinWH System. FranklinWH is a market-oriented, research-driven company focused on next-generation residential energy management and storage solutions. Headquartered in the San Francisco Bay Area, FranklinWH's team has decades of experience in energy systems, from design, through manufacturing, to sales and installation. FranklinWH is AVL-listed with multiple financial institutions.