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FranklinWH home batteries in Colorado

FranklinWH's aPower works with any solar inverter brand, which makes it a common add-on to existing Colorado systems. It's rated to 9,843 feet and heats itself in extreme cold; its aGate controller can also bring a generator into the system.

Headquarters
San Jose, California, United States
Where it’s made
FranklinWH says it mass-produces the aPower 2 and aPower S at a US facility in Santa Clara, California, covering battery pack production and complete aPower assembly, 'with domestic content' (no percentage given).
Warranty
15 years or 60 MWh (aPower 2 and S)
Altitude
Rated to 9,843 ft (3,000 m)
Cold weather
Operates to -4°F with built-in heating
Colorado installers
4 of 83 in our October 2026 survey list FranklinWH

Models for home backup

aPower 2 (APR-10K15V2-US), AC-coupled battery

Usable energy15 kWh
Continuous power10 kW (11.5 kVA)
Peak or surge15 kW for 10 s; 25 kW transient for 1 s; 185 LRA (can start a 5-ton A/C, per FranklinWH)
Largest system15 units per aGate (225 kWh)
Whole or partial homeWhole-home or partial via the aGate. FranklinWH says one aPower 2 'can power your entire home', depending on loads
Battery chemistryLFP; fanless convection cooling

aPower S (APRS-10K15V1-US), hybrid battery with built-in solar MPPTs

Usable energy15 kWh
Continuous powerUp to 11.5 kW (the datasheet also lists 8 kW and 10 kW variants)
Peak or surge15 kW for 10 s; 25 kW transient for 1 s
Largest systemUp to 15 aPowers per aGate in total, of which at most 8 can be aPower S
Whole or partial homeWhole-home or partial via the aGate
Solar input20 kW max STC, 4 MPPTs
Battery chemistryLFP

aGate (energy management system / transfer switch)

Rating200 A max backup-load and generator overcurrent protection; 100 A aPower OCPD; 80 A solar OCPD
Transfer timeUnder 16 ms from grid to microgrid
GeneratorOptional Generator Module for standby generator integration
ConnectivityEthernet, Wi-Fi, 4G
EnclosureNEMA 3R, indoor/outdoor

Warranty

aPower 2 and aPower S: 15 years or 60 MWh of aggregate throughput (FranklinWH describes this as more than 10,000 cycles). The capacity-retention percentage for aPower 2/S is not published in the documents reviewed. The posted FranklinWH end-user warranty still describes the first-generation aPower: 12 years or 43 MWh at 70% retention. Its conditions are purchase from an authorized reseller, installation by a FranklinWH Certified Installer, registration, and internet connection for remote updates. An unregistered or persistently offline system drops to a 4-year limited warranty. Confirm the current aPower 2/S terms with FranklinWH before publishing specifics.

Altitude

aPower 2, aPower S and aGate: up to 3,000 m (9,843 ft). No derating curve is published.

Cold weather

aPower 2 and aPower S operate from -20 C to 50 C (-4 F to 122 F), and up to 55 C (131 F) at derated (5 kW) output. A built-in heating blanket / automatic heating turns on in extreme cold. A separate charging-temperature range is not published. aGate: -20 C to 50 C. aPower 2 is IP67 and survives 3.3 ft of water for 30 minutes.

Monitoring and the app

FranklinWH App, through the aGate over Ethernet, Wi-Fi or 4G, with Self-Consumption, Time-of-Use and Emergency Backup modes. The datasheet mentions 'local & remote debugging', but app behavior without internet during an outage is not published.

Recalls

We found no U.S. Consumer Product Safety Commission recalls of this brand’s home-backup products since 2021, as of October 2026.

What a Colorado homeowner should know

FranklinWH is sold and installed through certified installers. Tell us what you need and we’ll connect you with one who installs it in your area.

Get an install quoteSize my backup

Reviewed October 29, 2026 from manufacturer documents and CPSC records. Specs and terms change; confirm with the manufacturer or your installer. Colorado Peak Power is independent of FranklinWH.

Sources

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