Supply backup power in case of an electrical grid failure until complete power restoration. Save time and money by eliminating downtime.
REDOUBT 13.5 kWh
An Advanced, Easy to Install, Industry Leading Energy Storage System (ESS) for Any Off-Grid or Grid-Tied Application.
● Lion Energy Sanctuary Energy Storage System / 13.5 kWh Battery Capacity With a 10 Year Industry Leading Warranty.
– 1x Hybrid Inverter (12kW Solar/DC Input, 8-14kW AC Output, 90A Grid Passthrough)
– 1x 13.5 kWh LiFePO4 Batteries (13.5 kWh Total Capacity)
– Industry Leading Safety Certification and Compliance
● Free Shipping (Within the Continental US). Ships Within 7-18 Business Days.
$13,974 $7,200
NEW! 4-Step Payment Plan Available at Checkout! ✅ Learn More
The Grid Down Redoubt is one of the worlds most advanced, modular, easy to install and comprehensive energy storage systems on the market. Expandable from 14kWh to 172 kWh, our new Redoubt bundle takes energy storage a step further by including EMP Shields advanced EMP and lightning protection. The Grid Down Redoubt is on average 20%+ more affordable than most other comparable energy storage systems. With a focus on safety, our Grid Down Redoubt provides industry leading safety certification and compliance. Our systems feature more storage capacity and inverter capability than most other energy storage systems on the market in this class. For anyone looking to purchase an energy storage system, we challenge you to shop around. After you do your research you will find that the Grid Down Redoubt's features, warranty, safety, protection, and price make it one of the best energy storage systems in the industry.
Key Features
◼︎ Expandable From 14.3 kWh to 172 kWh
◼︎ 12kW Inverter /18kW Solar
◼︎ Lithium Iron Phosphate Batteries - Safest Chemistry
◼︎ Stackable/Modular
◼︎ Indoor/Outdoor Rated
◼︎ Mobile App Integration
◼︎ Production & Consumption Management Functionality
◼︎ Pre-Commissioned Prior to Delivery
◼︎ Easy to Install
◼︎ Provides On & Off Grid Functionality
◼︎ Complete EMP Shield Lightning and EMP Protection Included
◼︎ 10-year Warranty/100% Lightning Guarantee with $25K Insurance
◼︎ Advanced Monitoring & Control Capabilities
◼︎ In-House Creation & Management of Software & Firmware
◼︎ Partner & Customer Support Team
◼︎ 100% Of Product Testing Is US Based
◼︎ US Based Servers for App Data Storage
◼︎ Generator Compatibility
◼︎ Free Shipping on Every System
◼︎ 0% Interest Payment Plans Available at Checkout
Need Help? We've Got You Covered
Use the tools below or you can contact us HERE
Our Grid Down Redoubt Selection Tool will help you calculate the total amount of energy your home could potentially use (called the load) and then tell you which Grid Down Redoubt system is best for you.
One question we get asked a lot is: If I have solar panels, how long will it take to charge my Redoubt system? With our new calculator, you can estimate just how long it will take to charge your system using solar panels.
Our Grid Down Redoubt Battery Life Calculator is an advanced tool that will tell you how long your Redoubt battery may last based on the amount of energy you select to be used per day.
I have the Grid Down Redoubt installed and I love it!
Grid Down has teamed up with Lion Energy (which I have owned their Sanctuary system for 2 years now and love) To make what I think is the best Energy Storage system even better! They are making it Lightning and EMP protected and easy for the DIYer to install.
Al Lumnah from Lumnah Acres During Installation of his 81kWH Grid Down Redoubt Off-Grid Solar Energy Storage System Bundle.
Watch Lumnah Acres Install the Grid Down Redoubt: HERE
I've worked with alternative power systems for 20+ years. It's very gratifying to see industry leaders EMP Shield and Grid Down combine there products to provide the highest quality back-up power.
The reputation of these two companies, backed up by their warranties, is just what this industry needs.
John "J.R." Moore
The John Moore Show
Republic Broadcasting Network
Many people think a generator is all they need for a disruption in electrical service. They're wrong. You need two additional things: A way to store the excess electricity and EMP protection.
Grid Down Redoubt is the solution. And it includes EMP Shield, which is the most trusted name in EMP protection.
Glen Tate
Author, 299 Days
Prepping 2.0
Finally a company does it right! An all in one home battery system that will allow you to sell power back to the grid and use it to power the home off grid if the power goes out! I also love that it has an outstanding 25 year warranty. The icing on the cake is that it is also hardened against all types of Electromagnetic Pulses. I give this system 5 stars and can’t wait to get one installed in my home!
JJ Johnson
Reality Survival
We've searched for years to find the right energy storage system for our home. It must meet our daily needs AND take care of us when the grid goes down. Grid Down Redoubt is exactly what we have been looking for. We will rest easy knowing that we have the power to take care of the ones we love. The EMP protection (upstream and downstream), ease of use, safety rating, and the 25-year warranty on the entire system are what sold us on Redoubt. That gives us peace of mind!
From Last Line of Defense
From Provident Prepper
From Lumah Acres
Unlock Savings, Tax Benefits, and Impressive Potential Return on Investment!
Maximize your return on investment with an energy storage system from Grid Down. Our Grid Down energy storage system allows you to leverage the 30% tax credit, dramatically reduce your electrical bill (for grid-tied applications) and potentially increase the value of your home.
Purchasing a Grid Down Redoubt is a strategic investment that can bring significant financial rewards and peace of mind. Grid Down systems provide the security of knowing you’ll always have power when you need it, in any situation.
Solar ROI Calculator
$
| 30% Federal Tax Credit |
$
15,508
|
| Estimated Annual Electricity Savings |
$
4,652
|
| Cost After Incentives & Savings |
$
31,534
|
| Estimated Home Value Increase |
$
72,372
|
Energy Capacity
14.3 kWh per Battery
Backup Power
12kW continuous power / 200 AMP Output
Size and Weight
74.25 in x 18.5 in x 10 in (L x W x D)
375 lbs
Inverter
DC to AC inverter efficiency: 96%
Round-trip efficiency: 94%
Max solar input: 12 kW
Installation
Integrated inverter and system controller
32°F to 86°F
Water and dust resistant
Certification
Meets North America safety and EMI standards.
Meets the most stringent safety protocols (UL9540), which includes UL1741 for the inverter and UL1973 for the battery (lithium iron phosphate or LiFePO4).
Warranty
25 Year Industry Leading Warranty
10 Year EMP Shield Warranty
100% guaranteed lightning protection backed by a $25,000 insurance policy.
Advanced Metrics
Monitor current and past energy usage, turn features and/or products on and off at the touch of a button, and set up custom controls to tailor your Grid Down Redoubt to your needs.
Monitor Current and Past Energy Consumption
See what energy is coming in and going out from both your solar system and Grid Down Redoubt. Look at past energy data by the hour, day, week or month so your system can be more efficient. Make individualized adjustments to create the best experience for yourself.
Set up Personalized Controls
Connect your devices and control the functionality of your Grid Down Redoubt from a distance using Bluetooth Technology. Remotely turn on or off your batteries so you’re not wasting any energy.
Automate & Save
For your Grid Down Redoubt, use the app to automate recharge times to only draw energy from the grid during off-peak hours. Create specific intervals to recharge you Sanctuary batteries, whenever is best for you.
Control Your System
Be ready for a home blackout or a big storm, winterize your RV, or turn your solar generator off or on.
Redoubt Benefits
Load
Management
Accumulate energy when the demand is low and discharge stored energy during peak times, saving money.
Backup Power/
UPS
Renewable Energy
Integration
Open the door to inexpensive electricity continuously available to on-grid, off-grid, and hybrid systems.
Power System
Recovery Capability
Based on battery storage, a Redoubt can restart after a total shutdown without using external electricity networks. Recover in the shortest time possible.
Energy
Time-Shift
In areas where electricity prices fluctuate, energy is purchased at a low price during off-peak periods and sold or used when the price increases.
Frequency
Control
Immediately react to power interruptions and stabilize the grid. It can also ensure voltage stability, maintaining its level within the specified range.
☀️ PV Input
| Max PV Input | 18kW |
| MPPT Input Voltage | 120-500V |
| Max Input Current | 16A*4 |
| Max Short Circuit Current | 22A |
| AC Solar Max | 12kW |
🔌 AC Output (On Grid)
| Nominal Output Power | 12kVA |
| Max Power Apparent Output | 50A |
| Output Voltage Ranger | 110-120/220-240V Split-Phase |
| Grid Frequency (Optional) | 60Hz |
| Max Grid Passthrough | 200A |
⚡️ Battery
| Battery Voltage Range | 40V~60V |
| Max Charging Current | 190A |
| Max Discharging Current | 190A |
📐 System
| Ingress Protection | Type 3R, IP65 |
| Dimensions | 33.6" x 18.50" x 10.08" |
| Weight | 110lbs |
| Max Efficiency | 97.8% |
| PV DC AFCI | Type 1 |
| PVRSS | TIGO RSS Transmitters (RS2) |
Basic System Architecture
This figure depicts the basic application of the Grid Down Redoubt System. Power is fed into the system from the power grid, solar power array or generator to have a complete running system.
Power in the Palm of Your Hand
Redoubt Charging Options
Off-Grid
Off-Grid is when you are getting power from an alternate energy source like solar panels, generator, wind power, or hydro power. This alternate energy source can be used to charge the Redoubt energy storage system and power your home directly.
Grid-Tied
Grid-Tied is when you are getting power directly from the power grid. With the Grid Down Redoubt, the electrical grid can be used to charge the Redoubt energy storage system and also power your home directly.
Combination
A combination system is when you are connected to the grid and also getting power from an alternate energy source. With a combination system, you can charge the redoubt from both power sources and also power your home from both power sources.
