FranklinWH aPower 2: Full Specs, Pricing & Honest Review (2026)

Brand:

FranklinWH

Quick Verdict

The aPower 2 packs the largest single-unit capacity in this comparison — 15 kWh and 10 kW continuous output from one battery, enough to start and run a 5-ton air conditioner while covering the rest of the home.

It's part of a broader FranklinWH energy management system (via the aGate controller) that can also integrate generators and EV charging, not just solar.

Best for: Larger homes wanting whole-home backup from as few battery units as possible, especially those with high-draw appliances like central AC.

<p class="font_8">Typical unit price: $9,000–$11,000 for the battery alone, plus the required aGate controller (roughly $2,000–$2,500). A single aPower 2 + aGate system commonly runs $14,000–$18,000 installed before incentives.</p>
<p class="font_8"><br></p>
<p class="font_8">Note: Pricing varies by installer, region, and system configuration. These are general market ranges, not a quote. ElecGuys doesn't sell equipment directly.</p>

Conceptual illustration of a large-capacity home battery unit (not the actual product)

Product image is a conceptual illustration for reference purposes only and does not depict the actual manufacturer product. Specifications are sourced from official manufacturer datasheets.

Key Features

15 kWh capacity per unit — largest single-unit capacity compared here
10 kW continuous output, 15 kW peak surge (handles 5-ton AC start-up)
15-year warranty covering 60 MWh throughput (10,000+ cycles)
IP67 weatherproof rating, fanless natural cooling at ~30 dBA

Key Specs

Usable Capacity:	15 kWh (per unit)
Continuous Power:	10 kW; up to 11.5 kW when PV and battery supply together
Peak Surge:	15 kW for 10 seconds
Chemistry:	LFP (Lithium Iron Phosphate)
Warranty:	15 years or 60 MWh throughput, whichever comes first
Weatherproofing:	IP67 (battery pack and inverter)
Operating Temperature:	-4°F to 131°F
Controller Required:	FranklinWH aGate
Expandability:	Up to 15 units per aGate (225 kWh total)

Note: Specs reflect the current aPower 2 datasheet as of 2026. Confirm exact configuration with your installer.

Price Range

Typical unit price: $9,000–$11,000 for the battery alone, plus the required aGate controller (roughly $2,000–$2,500). A single aPower 2 + aGate system commonly runs $14,000–$18,000 installed before incentives.

Note: Pricing varies by installer, region, and system configuration. These are general market ranges, not a quote. ElecGuys doesn't sell equipment directly.

Pros

Highest single-unit capacity and power output in this comparison — fewer units needed for whole-home backup
Tied for the longest warranty in the category (15 years)
Fanless, natural-cooling design means quieter operation and one less mechanical failure point
Broader FranklinWH ecosystem integrates generators and EV charging, not just solar

Cons

Requires the separate aGate controller to function, adding to total system cost
Larger physical size and weight (357 lb) than most competitors — installation planning matters
Newer brand with a shorter market track record than Tesla or Enphase

FAQ

Q: Can one aPower 2 really back up a whole home?

A: For many California homes, yes — its 15 kW peak surge can start a 5-ton AC unit while running other essential loads, and 15 kWh covers a typical overnight backup cycle for most households.

Q: What is the aGate and do I need it?

A: The aGate is FranklinWH's energy management hub — it's required to operate the aPower 2 and is what coordinates solar, grid, generator, and battery power sources. It's not optional.

Q: How does FranklinWH compare to Tesla Powerwall 3 on backup power?

A: The aPower 2 has a higher single-unit capacity (15 kWh vs. 13.5 kWh) and a longer warranty (15 years vs. 10), while Powerwall 3 has the advantage of an integrated inverter and broader brand recognition.

[No dedicated ElecGuys battery post yet — see note below]