FranklinWH aPower 2 (15 kWh Whole-Home Battery)

The FranklinWH aPower 2 is a robust residential battery aimed at whole-home backup with a single unit. It boasts a 15-kWh usable capacity – one of the largest single-battery capacities on the market – and delivers 10 kW of continuous AC power output (with 15 kW peak for 10 seconds). 

Features:

• Large Capacity & Power: Each unit provides 15 kWh of storage and 10 kW continuous output, often sufficient for whole-home backup with just one battery. Fewer units are needed to meet high energy demands compared to smaller batteries.
• Extended 15-Year Warranty: Backed by a 15-year or 60 MWh throughput warranty, demonstrating confidence in the product’s long-term durability. 
• Whole-Home Backup Ready: Supports 120/240 V split-phase output natively (no need for multiple units to cover both legs). High surge tolerance (starts 5-ton AC units). With the aGate controller, it can seamlessly disconnect from the grid and power the entire home during outages.
• Flexible Integration: The aGate controller allows integration of solar (any inverter brand), grid, and even a standby generator. This system-agnostic approach means the Franklin battery can work with virtually any existing solar setup and provide generator-solar-battery coordination for extended outages.
• Quiet & Resilient Design: Passive cooling (fanless) and an IP67 rated enclosure for outdoor installation. It operates in a wide temperature range (-4°F to 131°F) with built-in thermal management, making it suitable for harsh climates. The unit is also aesthetically pleasing with an LED status light and low noise (~30 dBA).
• Peak Power: 15 kW (for 10 seconds); 
• Chemistry: Lithium Iron Phosphate (LFP); 
• Integration: AC-coupled with included aGate controller (manages grid/islanding, solar inverter, generator, EV, etc.); Scalability: up to 15 batteries (225 kWh) on one system; 

Enphase IQ Battery 10C (10 kWh Home Battery)

Enphase IQ Battery 10C is a 10-kWh all-in-one AC-coupled home battery known for its high-power output and seamless integration with Enphase solar systems.

Features:

• 10.0 kWh of usable capacity and up to 
• 7.08 kW continuous AC power.
• Output 120/240 V AC directly and support heavy loads like air conditioners or pool pumps with 14.16 kW peak power for short bursts. 
• Designed for whole-home backup when paired with the Enphase System Controller (Enpower switch) for grid isolation. 
• Modular design (multiple units can be combined for more capacity).
• 15-year warranty (up to 6,000 cycles) (60% capacity retention).
• Microinverter Redundancy: Contains four IQ8 microinverters inside.
• Safe & Long-Lasting: Uses cobalt-free LFP battery chemistry and is UL 9540A safety certified. Backed by 15-year/6,000-cycle warranty. well above the 10-year industry standard.
• Seamless Solar Integration: AC-coupled design works with new or existing solar. Optimized for Enphase solar installations with integrated monitoring and smartphone app control.

Tesla Powerwall 3 (13.5 kWh Advanced Battery System)

The Tesla Powerwall 3 is the latest iteration of Tesla’s famed home battery, offering 13.5 kWh of usable energy storage per unit. What sets Powerwall 3 apart is its integrated solar inverter and dramatically higher power output than previous models 

Features:

• High Power & Performance: Delivers 11.5 kW continuous output per unit – over twice the output of Powerwall 2. This means fewer units can support more of your home. Excellent surge capability (can start 5-ton AC units with 185 LRA) for whole-home backup.
• Integrated Inverter (Solar-Ready): Built-in multi-string solar inverter with 6 MPPTs allows direct connection of solar panels (up to 20 kW), reducing the need for a separate solar inverter. This all-in-one design simplifies installations and immediately lets you store solar energy.
• Scalable Capacity: Base 13.5 kWh unit can be expanded with up to 3 additional battery modules (each 13.5 kWh) for up to 54 kWh in one stack. Multiple stacks can be installed for even greater capacity, making it suitable for large homes or off-grid use.
• Smart Software & Ecosystem: Seamless integration with the Tesla app for monitoring, smart charging (time-of-use shifting), and over-the-air updates. Can participate in Tesla’s Virtual Power Plant programs in some regions. The ecosystem (Gateway/Backup Switch and app) is well-established and user-friendly.
• Sleek Design & Tesla Reliability: Minimalist design (wall-mounted white unit) that’s water-resistant (IP67)for indoor or outdoor install. Warranty: 10 years (warranted ≥70% capacity).
• AC & DC-coupled hybrid (built-in solar inverter, requires Tesla Backup Gateway or Switch for grid disconnect).

Choosing the Right Home Battery

All three of these batteries are premium solutions that can power a home when it counts. The best choice depends on your priorities:

• Enphase IQ Battery 10C – Ideal if you already have (or plan to install) an Enphase microinverter solar system and value a long warranty. It’s a compact, safe choice for moderate energy needs, and you can stack units for more capacity. Choose Enphase if you want tight integration with your solar and a proven 15-year lifespan.
• Tesla Powerwall 3 – Great for those wanting highest power output and an all-in-one solar + battery solution. If you have heavy daily loads or plan to go off-grid/whole-home backup with fewer batteries, the Powerwall 3’s power is unmatched. It’s also a good fit if you’re comfortable in Tesla’s ecosystem and want the user-friendly app and potential future virtual power plant earning opportunities.
• FranklinWH aPower 2 – A single-unit solution for whole-home backup. If you have a large home or critical loads that you don’t want to shed during outages, the 15 kWh aPower 2 can handle it. It’s also very flexible with existing solar inverters and generators, making it ideal for retrofit scenarios where you want everything to work together. The 15-year warranty provides peace of mind that it will last for the long haul.

Before deciding, consider your daily energy usage, critical loads, whether you need full-home backup or just essential loads, and if you have an existing solar system to integrate. It’s wise to get a professional assessment of your home’s load profile.
All currently available, there’s never been a better time to add a battery to your solar system. Contact Infinium Solar Roofing and Electric Roofing and Electrical today for a free consultation on bringing resilient, clean energy storage to your home.