🔄
Skip to content

No Sales Tax 💵 Beat-Anyone Price Match 💲 Free Parts for Life 🛠️ Free Shipping on Most Items 📦

No Sales Tax 💵 Beat-Anyone Price Match 💲 Free Parts for Life 🛠️ Free Shipping on Most Items 📦

No Sales Tax 💵 Beat-Anyone Price Match 💲 Free Parts for Life 🛠️ Free Shipping on Most Items 📦

No Sales Tax 💵 Beat-Anyone Price Match 💲 Free Parts for Life 🛠️ Free Shipping on Most Items 📦

No Sales Tax 💵 Beat-Anyone Price Match 💲 Free Parts for Life 🛠️ Free Shipping on Most Items 📦
Facebook Instagram LinkedIn Pinterest
About Us Contact Us Contact Form Privacy Policy Terms of Service FAQ

Filters

Home Battery Backup

Home Battery Backup: Batteries for Outages, Solar, and Off-Grid Homes

A home battery backup stores electricity so your fridge, lights, internet, furnace blower, and well pump keep running when the grid goes down. Krato Power carries LiFePO4 home batteries from EG4, Rich Solar, Rubix, Renon Power, SimpliPhi, MidNite, Discover Energy, HomeGrid, and more, plus flooded and AGM deep cycle batteries for traditional battery banks. Every order ships free with no sales tax and a price-match guarantee.

Shop by battery type

  • Wall mount batteries: the 16 kWh EG4 Indoor and All Weather WallMount (48V, 314Ah) and the 10 kWh SunGoldPower Powerwall X mount on the wall beside your inverter.
  • Server rack batteries: 48V modules like the Rich Solar Alpha 5, MidNite PowerFlo5, and Discover Energy 5.0 kWh AES slide into a rack, so you can start around 5 kWh and add modules later. Browse all 48V server rack batteries.
  • Stackable and outdoor systems: HomeGrid STACK'D, Renon Power Xtreme, Rubix Stack Series, and SimpliPhi 6.6 kWh modules stack to the capacity you need, and the Discover Energy 16.1 kWh HELIOS installs outdoors as a single unit.
  • 12V and 24V lithium batteries: Rich Solar Alpha batteries for cabins, sheds, RVs, and smaller off-grid systems.
  • Deep cycle lead acid: Trojan, Rolls, and Fullriver 6V L16 batteries for owners who prefer flooded or sealed AGM banks. See all deep cycle batteries.

How much battery do you need?

Size the battery to the loads you want to cover and how many hours you need them, not to the size of your house. As a starting point:

  • Essentials (fridge, lights, internet, phones): about 5 to 10 kWh for a day and a night.
  • Essentials plus comfort (add a well pump, some heating or cooling, more outlets): about 10 to 15 kWh.
  • Whole home (most circuits and heavy appliances): 20 kWh and up, with an inverter sized for motor surges like central air.

Our guide on how big a battery to run a house walks through the math and runtime examples.

What else you need

A battery stores the power, but an inverter turns it into household AC. Pair your battery with a compatible hybrid inverter, and check that the battery is on the inverter's approved list if you want closed-loop communication. To power hard-wired circuits, use a transfer switch or a backup loads panel installed by a licensed electrician. Add solar panels or a generator to recharge during long outages, or charge from the grid if you do not have solar.

Want a simpler setup? Portable power stations combine the battery, inverter, and outlets in one unit and plug in with no installation.

Home battery backup FAQs

How long will a home battery backup last?

Runtime is capacity divided by load. A 10 kWh battery runs about 500 watts of essentials for roughly 16 to 20 hours, and far less once heavy loads like HVAC kick in.

Do I need solar for a home battery?

No. A battery can charge from the grid and hold that power for outages. Solar adds the ability to recharge during a long outage and lower your daily bill. See whole-home battery backup without solar.

Is LiFePO4 better than lead acid?

For most homes, yes. LiFePO4 lasts thousands of cycles, needs no maintenance, and can use most of its rated capacity. Lead acid costs less up front but is heavier, needs more care, and should not be drained as deeply.

Home backup buying guides

See what home battery backup costs and whether it is worth it, compare voltages in 48V vs 24V vs 12V server rack batteries, build a bank with our off-grid battery bank guide, or compare battery, portable, and standby options in Best Generator for Home Backup.

Not sure what fits your home? Call our US-based team at 888-855-7286 with the appliances you need to keep running and we will size the battery and inverter with you.

  • Nature's Generator Powerhouse Power Addition
    Nature's Generator Powerhouse Power Addition
    Save $375.00
    Nature's Generator Nature's Generator Powerhouse Power Addition
    $2,874.99
    $2,499.99

    This power add-on bundle includes an additional Nature's Generator Powerhouse Power Pod and two Nature's Generator Powerhouse Power Panels. Expa...

    View full details
    $2,874.99
    $2,499.99
    Save $375.00
  • A tall, rectangular gray industrial machine with adjustable feet, featuring a circular black 'EG4' logo on the front, photographed against a plain white background.
    A tall, rectangular metallic gray industrial unit with a circular black 'EG4' logo on the front, standing on small feet against a plain white background.
    Sold out
    EG4 EG4 | Indoor WallMount Battery | 48V 314Ah | 16kWh
    $3,909.99
    $3,399.97

    The EG4 WallMount 314Ah Indoor Battery stores 16kWh. Why You'll Love The EG4 WallMount 314Ah Indoor Battery 16kWh of backup you can count on. Sto...

    View full details
    $3,909.99
    $3,399.97
    Sold out
  • The opened casing reveals the inner wiring and connectors of the Fortress Power eForce 9.6kW Lithium Battery-EFORCE9.6
    Fortress Power eForce 9.6kW Lithium Battery-EFORCE9.6 is shown as a sleek gray-and-black wall-mounted battery unit with simple side controls
    Sold out
    Fortress Power Fortress Power eForce 9.6kW Lithium Battery
    $6,668.99
    $5,798.97

    Live Brighter With the Fortress 9.6 Battery by Your SideFortress Power eForce 9.6kW Lithium Battery - EFORCE9.6 delivers reliable whole home energy...

    View full details
    $6,668.99
    $5,798.97
    Sold out
  • An open battery compartment reveals internal wiring inside the Fortress Power eForce 19.2kW Lithium Battery-EFORCE19.2
    Fortress Power eForce 19.2kW Lithium Battery-EFORCE19.2 is shown as a tall gray and black wall-mounted battery unit
    Sold out
    Fortress Power Fortress Power eForce 19.2kW Lithium Battery
    $11,728.99
    $10,198.97

    Make Every Room Feel Secure With Fortress Eforce 19.2kW BackupFortress Power eForce 19.2kW Lithium Battery - EFORCE19.2 delivers high capacity ener...

    View full details
    $11,728.99
    $10,198.97
    Sold out
  • Side view of the Sol-Ark 60 kWh Indoor Lithium Battery System - L3-HV-60KWH, showing its sleek design and yellow cables
    A tall gray rack of stacked Sol-Ark batteries, the Sol-Ark 60 kWh Indoor Lithium Battery System - L3-HV-60KWH, built for energy storage
    Sold out
    Sol-Ark Sol-Ark L3-HV-60-KWH Indoor Battery Bank
    $34,499.99
    $29,999.97

    Megawatt-scale storage for your business: Sol-Ark L3-HV-60 Indoor Why You'll Love The Sol-Ark L3-HV-60 Indoor Battery Bank 61.44 kWh of storage i...

    View full details
    $34,499.99
    $29,999.97
    Sold out
  • Sol-Ark 40 kWh Indoor Lithium Battery System - L3-HV-40KWH is shown in a tall, metal rack configuration with multiple stacked battery modules connected by bright yellow cables
    Sol-Ark 40 kWh Indoor Lithium Battery System - L3-HV-40KWH appears in a side perspective, emphasizing its durable metal housing and modular battery configuration
    Sold out
    Sol-Ark Sol-Ark 40 kWh Indoor Lithium Battery System
    $26,678.99
    $23,198.97

    Store power, cut costs: Sol-Ark L3-HV-40 Indoor Battery Bank Why You'll Love The Sol-Ark L3-HV-40 Indoor Battery Bank Real commercial storage in ...

    View full details
    $26,678.99
    $23,198.97
    Sold out
  • Sol-Ark 60 kWh Outdoor Lithium Battery System - L3-HVR-60KWH appears closed with a side control unit on a sleek gray body
    Sol-Ark 60 kWh Outdoor Lithium Battery System - L3-HVR-60KWH stands tall with a side control panel and sturdy gray design
    Sold out
    Sol-Ark Sol-Ark L3-HVR-60KWH Outdoor Battery Bank
    $45,999.99
    $39,999.97

    Outdoor commercial energy storage: Sol-Ark L3-HVR-60 Battery Bank Why You'll Love The Sol-Ark L3-HVR-60 Outdoor Battery Bank 61.44 kWh of storage...

    View full details
    $45,999.99
    $39,999.97
    Sold out

The Krato Power Promise

Why customers buy their power systems from us

💵
No Sales Tax
Save hundreds to thousands vs local retail. Why?
💲
Beat-Anyone Price Match
Found it cheaper? We'll beat it. See how
🛠️
Free Parts for Life
Genuine replacement parts, free. Details
📦
Free Shipping on Most Items
Ships in 1 business day. Heavy freight: free to 19 states + DC, flat rate elsewhere.

Questions? Call 1-888-855-7286 - US-based experts, M-F 9-5 CST.