You want the lights, the fridge, and the WiFi to stay on when the grid blinks out. The real question is whether you plug in a battery yourself or hire a crew to wire one into your walls.
EcoFlow Delta Pro 3 — Top Pick
Plug-and-play, expandable, and ready the same afternoon with no electrician, the EcoFlow Delta Pro 3 gives most homeowners flexible, reliable backup that scales from essential circuits toward whole-home, which makes it our winner for 2026.
In a hurry? That's our pick. Want the reasoning and the full comparison? Keep reading.
Home backup power has split into two very different camps, and picking the wrong one costs you time, money, and a lot of frustration. On one side sits the plug-and-play world led by EcoFlow: portable, expandable batteries you set up yourself in an afternoon, no electrician required. On the other sits the permanent, solar-tied world led by Enphase: whole-home batteries bolted to your wall, wired into your panel by a licensed installer, running quietly for years. Both keep your home powered when the grid fails. They just get there in completely opposite ways.
The trap is assuming the fancier, installed system is automatically better, or that the portable one is somehow a toy. Neither is true. The right pick depends on whether you rent or own, how much of your home you need to keep running, whether you already have solar, and how much you want to touch the electrical work. Below we run EcoFlow and Enphase through two honest rounds, then hand you a clear winner for most homeowners plus two strong alternatives if your needs lean whole-home or premium.
Key Takeaways
- EcoFlow is portable, plug-and-play, and expandable, so you set it up yourself in an afternoon with no electrician and grow capacity by stacking extra battery units.
- Enphase is a permanent, solar-tied whole-home battery wired into your panel by a licensed installer for seamless, automatic backup.
- For most homeowners who want flexible, reliable backup without an install, the EcoFlow Delta Pro 3 is our top pick.
- If you want a fully integrated, whole-home solar system that runs invisibly, the Enphase Battery is the one to chase.
- Set on a permanent installed system? The Franklin Battery does whole-home backup, while the Sonnen Battery leads on premium cycle life and longevity.
Round 1: Setup, Backup Scope, and Solar
This is where the two approaches split hardest. The EcoFlow Delta Pro 3 is a portable, plug-and-play battery you unbox and use the same day. You charge it from a wall outlet, from your car, or from solar panels you clip on yourself, and you power devices by plugging them straight in. For deeper backup you can wire it into a transfer switch, but the entry path needs zero electrician and zero permits. That freedom is the whole point: it moves with you, it works in a rental, and you never wait on an installer's schedule.
The Enphase Battery takes the opposite road. It is a permanent, solar-tied battery mounted to your wall and wired into your electrical panel by a licensed installer, designed to back up your whole home automatically. When the grid drops, it switches over seamlessly and keeps running without you lifting a finger. It shines brightest when paired with a solar array, storing your daytime sun for use after dark and during outages. EcoFlow integrates with solar too, but as a flexible add-on you control; Enphase treats solar as the heart of a fixed, always-on system. Round 1 comes down to one question: do you want to plug in and go, or wire in and forget?
Round 2: Capacity, Expandability, Install, and Warranty
Capacity is measured in kilowatt-hours (kWh), and both camps scale, just differently. The EcoFlow Delta Pro 3 starts as a single unit and grows as you stack extra battery packs onto it, so you buy the capacity you need now and add more later without re-engineering anything. That modular, self-serve expandability is rare in home backup and it keeps your options open. A permanent system like the Enphase Battery also expands in modules, but each addition means another visit from your installer rather than a package you plug in yourself.
Install and warranty are where the real cost lives. EcoFlow's DIY path means no labor bill, no permit wait, and no hole in your wall, though you handle the setup and any transfer-switch wiring yourself or with an electrician if you want deeper integration. Enphase, Franklin, and Sonnen all require professional installation, which adds labor and lead time but delivers a clean, code-compliant, whole-home result. On warranty, all four back their batteries for years of daily cycling; premium installed systems like Sonnen emphasize exceptionally high cycle life and long service life, which matters if you plan to lean on the battery every single day for a decade or more. Match the warranty and cycle rating to how hard you will actually use it.
Quick Comparison
| Product | Best For | Setup | Backup | Expandability |
|---|---|---|---|---|
| EcoFlow Delta Pro 3 | Most homeowners | Plug-and-play, DIY | Partial to whole-home | Excellent |
| Enphase Battery | Solar-tied whole-home | Pro install required | Whole-home | Modular, pro-added |
| Franklin Battery | Whole-home installed | Pro install required | Whole-home | Stackable, pro-added |
| Sonnen Battery | Premium longevity | Pro install required | Whole-home | Modular, pro-added |
1. Delta Pro 3 — Best Overall
EcoFlow Delta Pro 3
The EcoFlow Delta Pro 3 is the battery we hand to most homeowners, and it wins this matchup for the majority because it removes every barrier between you and backup power. You unbox it, plug it in, and you are protected the same afternoon, no installer, no permit, no waiting. Charge it from the wall, your car, or clip-on solar panels, then run your fridge, WiFi, lights, and devices straight from its outlets. When you want more, wire it into a transfer switch for deeper home coverage. It fits an owned house, a rental, or a life that might move next year.
What makes it the all-rounder is expandability on your terms. Start with one unit for essential-circuit backup, then stack extra battery packs to grow your kilowatt-hours as your needs grow, all without re-engineering a thing. It integrates with solar when you want it and stays flexible when you do not. If you want reliable backup power without handing your electrical panel to a crew, this is the smart, do-it-yourself choice that still scales toward whole-home.
Pros
- Plug-and-play setup you finish yourself in an afternoon, no electrician
- Expandable capacity by stacking extra battery packs as you grow
- Works in a rental or an owned home and moves with you
- Charges from wall, car, or clip-on solar panels for real flexibility
- Scales from essential-circuit backup toward whole-home coverage
Cons
- Whole-home integration still needs a transfer switch and some wiring
- Portable form takes floor space rather than mounting cleanly to a wall
- Not a fixed, always-on solar system out of the box like installed rivals
2. Enphase — Best Solar-Tied Whole-Home
Enphase Battery
The Enphase Battery is the answer when you want a permanent, whole-home system that simply runs. Wired into your electrical panel by a licensed installer and built to pair with a solar array, it stores your daytime sun and switches over automatically the instant the grid drops. There is nothing to plug in, nothing to move, and nothing to think about; it lives on your wall and keeps your entire home powered through outages while you carry on as normal. For a solar household that wants seamless, invisible backup, this is the benchmark.
It asks more of you up front. You need a licensed installer, a permit, and the lead time that comes with a professional job, and it makes the most sense when solar is central to your setup rather than an afterthought. But once it is in, the payoff is genuine set-and-forget reliability across your whole home, with modular capacity your installer can add to over time. If your home is solar-first and you want a fixed system that runs itself, the Enphase Battery earns its runner-up spot.
Pros
- Seamless, automatic whole-home backup the moment the grid drops
- Purpose-built to pair with solar and store your daytime power
- Mounts cleanly to the wall with nothing to plug in or move
- Modular capacity your installer can expand over time
- Truly set-and-forget once professionally installed
Cons
- Requires a licensed installer, a permit, and real lead time
- Makes the most sense only when solar is central to your setup
- Fixed to your home, so it cannot move with you or work in a rental
3. Franklin — Best Whole-Home Installed
Franklin Battery
The Franklin Battery is built to back up your entire house, not just a few essential circuits. Installed by a licensed pro and wired into your panel, it delivers whole-home coverage designed to run your major loads through an outage without you rationing what stays on. It is a strong choice for a household that wants the confidence of full-house backup and is happy to bring in a crew to wire it in properly and to code.
You trade flexibility for that completeness. Like the other installed systems here, it needs professional installation, a permit, and lead time, and it stays fixed to your home rather than moving with you. But its capacity stacks, so your installer can add modules as your needs grow, and it works with solar for a self-sufficient setup. If your priority is dependable whole-home backup from a permanent system, the Franklin Battery makes a compelling case.
Pros
- Designed for genuine whole-home backup, not just essential circuits
- Stackable capacity your installer can grow over time
- Integrates with solar for a self-sufficient home setup
- Clean, code-compliant permanent install by a licensed pro
- Confidence of running major loads through an outage
Cons
- Requires professional installation, a permit, and lead time
- Fixed to your home and cannot move with you
- No plug-and-play or rental-friendly entry path like EcoFlow
4. Sonnen — Best Premium Longevity
Sonnen Battery
The Sonnen Battery is the premium, long-haul pick. Built around exceptionally high cycle life and a reputation for longevity, it is made for the household that will lean on its battery every single day for many years, cycling through solar storage and grid support without wearing out early. Installed by a licensed professional and wired for whole-home backup, it combines that endurance with refined build quality and smart energy management that quietly optimizes how your power flows.
That refinement comes at a premium, and like every installed system here it needs a pro, a permit, and lead time. But for buyers who value durability and daily-cycling stamina above all else, and who plan to run their battery hard for a decade or more, the extra investment buys peace of mind and a longer service life. If you want the most enduring, premium whole-home system and you will actually use it every day, the Sonnen Battery is worth the look.
Pros
- Exceptionally high cycle life built for heavy daily use
- Reputation for long service life and durability
- Refined build quality with smart energy management
- Whole-home backup wired in by a licensed pro
- Peace of mind for a decade-plus of everyday cycling
Cons
- Commands a real premium over other installed systems
- Requires professional installation, a permit, and lead time
- Fixed to your home, so it offers no portable or DIY path
Which Should You Choose?
Pick the EcoFlow Delta Pro 3 if you want flexible backup without an install
If you want your home protected this week, not next month, and you would rather plug in a battery yourself than hand your panel to a crew, the EcoFlow Delta Pro 3 is your pick. Its plug-and-play setup, expandable capacity, and rental-friendly freedom cover more situations than any fixed system here, and you can scale it from essential circuits toward whole-home as your needs grow. For most homeowners, this is the smart, do-it-all choice.
Pick the Enphase or Franklin Battery if you want a permanent whole-home system
Want a fixed system that runs your entire house automatically and you already have or plan to add solar? The Enphase Battery delivers seamless, solar-tied, whole-home backup that lives on your wall and switches over on its own. Want full-house coverage from a dedicated whole-home battery? The Franklin Battery is built for exactly that. Both need a licensed installer and a permit, and that is a fair trade for clean, always-on, whole-home reliability.
Pick the Sonnen Battery if longevity and daily cycling matter most
Some buyers plan to lean on their battery every single day for a decade or more. The Sonnen Battery answers that with exceptionally high cycle life, refined build quality, and a reputation for lasting. It still needs professional installation and costs a premium, but if endurance and daily-cycling stamina are your top priorities, the extra investment buys a longer, more dependable service life, and that is worth it if that matters to you.
Ready to Keep Your Home Powered No Matter What?
The EcoFlow Delta Pro 3 gives you flexible, expandable backup power you set up yourself in an afternoon, with no installer and no permit. Check current pricing and see why it wins our EcoFlow vs Enphase matchup for most homeowners.
Explore Brainstamped's Free ToolsFrequently Asked Questions
For most homeowners, the EcoFlow Delta Pro 3 is the better all-round pick. It sets up plug-and-play in an afternoon with no electrician, works in a rental, and expands by stacking extra battery packs, scaling from essential circuits toward whole-home. The Enphase Battery is the stronger choice if you want a permanent, solar-tied system that backs up your entire home automatically and you are happy to bring in a licensed installer.
It depends on the type. The EcoFlow Delta Pro 3 needs no electrician for its plug-and-play setup, though wiring it into a transfer switch for deeper home backup is best done by a pro. Permanent systems like the Enphase, Franklin, and Sonnen batteries all require a licensed installer and a permit, because they wire directly into your electrical panel for whole-home coverage.
Capacity is measured in kilowatt-hours (kWh), and the right amount depends on which loads you want to run and for how long. Essential-circuit backup, the fridge, WiFi, lights, and a few outlets, needs far less than running your whole house with air conditioning. Both EcoFlow and the installed systems expand in modules, so a good approach is to start with what covers your must-haves and add capacity as your needs grow.
Yes, all of them work with solar, just differently. The EcoFlow Delta Pro 3 charges from clip-on solar panels you add yourself as a flexible option. The Enphase, Franklin, and Sonnen batteries are designed as solar-tied systems, storing your daytime power and using it after dark or during an outage, which makes them a natural fit if solar is central to your home.
Longevity comes down to cycle life, how many times a battery can charge and discharge before it wears down. The Sonnen Battery emphasizes exceptionally high cycle life and long service life, which suits a household that cycles its battery hard every single day for a decade or more. All four batteries back their systems for years of daily use, so match the cycle rating to how heavily you actually plan to lean on it.