Tesla
Tesla Powerwall 3
The reference point every other home battery is measured against. Price shown is typical installed cost ($13,000-16,500 in 2026, roughly $9,300-11,500 hardware). One unit delivers 11.5kW continuous with a 185A locked-rotor start rating - enough to run and start central air - plus an integrated 6-MPPT solar inverter that eliminates a separate inverter purchase. LFP chemistry, 97.5% efficiency, 10-year warranty. Owner sentiment: the app is universally called the best in the industry, and per-kWh installed cost is hard to beat. The complaints are real though: a subset of owners report a persistent two-tone hum/vibration from the cooling system audible through garage walls, support tickets that stall between Tesla and third-party installers, and quote quality varies enormously by installer. Expansion packs (13.5kWh, no inverter) bring a unit to 54kWh.
Specifications
Highlights
Pros
- ✓11.5kW continuous + 185A LRA starts central AC without soft-starters
- ✓Integrated 6-MPPT solar inverter saves $2,000+ on new solar installs
- ✓Lowest installed cost per kWh of any major brand
- ✓Tesla app is the consensus best monitoring experience
- ✓LFP chemistry with 10-year, 70%-retention warranty
- ✓Storm Watch auto-charges before forecast severe weather
Cons
- ✗Documented hum/vibration complaints from a minority of installs
- ✗Support routing between Tesla and certified installers frustrates owners
- ✗Installer quote variance of thousands of dollars for identical systems
- ✗DC-couples only to Tesla's own solar - existing inverters must AC-couple
- ✗No federal tax credit in 2026 (25D expired) makes payback longer
Compare the Tesla Powerwall 3
Related units
More from Tesla →
FranklinWH
FranklinWH aPower 2
The Powerwall alternative installers keep steering people toward in 2026, and owner satisfaction scores back them up. One cabinet holds 15kWh - the most storage per unit of any mainstream battery - with 10kW continuous and a 15kW/10-second surge rated to start a 5-ton air conditioner. Price shown is typical installed cost with the aGate controller ($12,000-20,000 depending on market). Because it's AC-coupled, it retrofits onto any existing solar inverter brand - the single biggest reason people pick it over Powerwall 3. The aGate handles whole-home transfer plus generator and even EV-as-load integration. Owner gripes are modest: quotes vary widely between dealers, the app covers essentials but lacks Tesla's polish and power-user data, and the dealer network, while growing fast, is thinner than Tesla's. Expansion runs to a ridiculous 225kWh across 15 units.
Anker
Anker SOLIX X1
Anker's professionally-installed system, built from slim 5kWh modules into the best-looking cabinet in the business - reviewers keep calling it the battery you don't need to hide. Price shown is a typical installed 15kWh configuration (~$9,750-11,000 hardware plus $1,500-5,000 installation). The 6kW/12kW-peak power module handles essential-loads or whole-home duty, modules run at full power from -4°F thanks to per-pack thermal management, and systems parallel to a monstrous 180kWh. Reviewers praise the modular economics - add 5kWh at a time instead of a whole second cabinet. The catch owners and forum threads flag: the certified-installer network is much thinner than Tesla's or Enphase's, so quotes swing wildly and some regions simply have no coverage; the app is solid but young; and 12kWh usable from the '15kWh' stack (90.2% round-trip) needs reading of the fine print.
EcoFlow
EcoFlow OCEAN Pro
EcoFlow's 2026 leap from portable stations into permanently-installed storage, and on paper it's a monster: 10kWh IP67 modules stacking to 80kWh per inverter, a hybrid inverter platform rated to 24kW output with 205A LRA motor-start, 40kW of solar input, an integrated Smart Electrical Panel 40 and 11.5kW EV charger, plus a 15-year warranty that beats everyone except Enphase's on paper. Pricing is quote-only through certified installers - the price shown is an estimated installed starting system (inverter + battery + smart panel) based on early published system ranges; treat it as directional, not gospel. Because it launched this year, real owner history is thin: early impressions praise the AI-driven time-of-use optimization and the whole-ecosystem integration, while the obvious cautions are a brand-new installer network, unproven long-term support for installed products from a portable-power company, and unknown service logistics.