Keep Your Phone Powered Through Blackouts with the Emergency Solar Power Bank
Reliable backup power for blackouts, storms, and off-grid emergencies, so your phone stays on when wall outlets go down.
- 20,000mAh Capacity: 4–6 phone charges for a full weekend
- 20W Fast Charging: Get compatible phones to 80% in around 30 minutes
- 3 Devices at Once: Charge through USB-C, USB-A, and wireless
- Emergency-Ready: Dual LED lights, IPX4 splash resistance, and solar top-ups
Selling out fast
Due to high demand, limited quantities available.
Trusted by 200K+ customerswho choose Fort Sentinel for backup power when it matters most.
90-Day Return WindowChanged your mind? Contact us within 90 days of delivery to request a return. Unopened, unused items in their original packaging are eligible under our refund policy. Approved returns are refunded after inspection.
How much backup power can I expect for my phone?
A charged power bank can give your phone several extra charges when you cannot reach an outlet. The exact number depends on your phone's battery and whether you use it while charging. Fully charge Fort Sentinel before a trip or storm so you have that reserve ready for a weekend away or a short outage.
How fast will it charge my phone?
The USB-C port delivers 20W fast charging. That can get a compatible iPhone from dead to about 80% in around 30 minutes. The USB-A port and wireless charging are slower, but still useful for overnight or passive charging.
Is it waterproof? How durable is it?
It's rated IPX4 splashproof, meaning rain, sweat, splashes, and spills should not hurt it. It also has a rugged ABS and PC shell with reinforced rubber edges. Do not submerge it in water.
Can it charge multiple devices at the same time?
Yes, up to 3 devices at once. You have a USB-C port, a USB-A port, and wireless charging all working simultaneously.
Can I take it on a plane / Is it TSA approved?
Yes. The TSA limit is 100 watt-hours. This power bank is 37Wh, so it is below the limit. Bring it in your carry-on and check your airline's rules before departure.
How long does the solar panel actually take to charge this?
The solar panel is your backup, not your main charger. It slowly tops the power bank up during the day. For a dependable full charge, plug it into a USB-C charger before you leave home.
How do returns work?
You can request a change-of-mind return within 90 days of delivery. The item must be unopened, unused, and in its original packaging. Email support@fortsentinel.com before sending it back so our team can provide return instructions.
A backup plan for staying in touchKeep Fort Sentinel charged before a storm or trip. Its battery gives your phone reserve power when outlets are unavailable, and the solar panel can slowly add power in daylight. That extra option can help you stay in touch when plans change.
Introducing Fort Sentinel
The Emergency Solar Power Bank
Are sudden blackouts leaving your family without a reliable way to stay connected?
Or are you worried your phone will die before the power comes back on?
Meet Fort Sentinel, the all-in-one emergency power solution that keeps your phone alive when the grid goes down.
Its high-capacity 20,000mAh battery stores enough reserve for up to six phone charges, while the built-in solar panel provides slow emergency top-ups when no outlet is available. And the rugged, portable design makes it perfect for blackouts, severe weather, road trips, camping, travel and more.
Over 23,000+ prepared customers trust Fort Sentinel and feel better knowing backup power is ready before the next outage. Will you be joining them soon?
Introducing Fort Sentinel
The Emergency Solar Power Bank
Are sudden blackouts leaving your family without a reliable way to stay connected?
Or are you worried your phone will die before the power comes back on?
Meet Fort Sentinel, the all-in-one emergency power solution that keeps your phone alive when the grid goes down.
Its high-capacity 20,000mAh battery stores enough reserve for up to six phone charges, while the built-in solar panel provides slow emergency top-ups when no outlet is available. And the rugged, portable design makes it perfect for blackouts, severe weather, road trips, camping, travel and more.
Over 23,000+ prepared customers trust Fort Sentinel and feel better knowing backup power is ready before the next outage. Will you be joining them soon?
Keep Your Devices Powered When the Grid Goes Down
These emergency-ready features make Fort Sentinel the complete backup power solution.
20,000mAh (74Wh)
Power Reserve
Charges 3 Devices
at Once
Solar Emergency
Top-Ups
Flashlight, SOS
and Compass
Meet Fort Sentinel
Keep your phones, tablets and other essential USB devices powered when the grid goes down.
We studied common portable chargers and discovered something they were all missing.
Most are designed for everyday convenience, providing a short burst of power before becoming another dead device.
Fort Sentinel was built differently. Its 20,000mAh (74Wh) battery stores enough reserve for up to six typical phone charges, while its built-in solar panel can recover small amounts of power when no outlet is available.
The result is an emergency power bank designed to keep your essential devices running when ordinary power sources disappear.
So you can stay connected when it matters most.
Portable and Rechargeable
Thanks to its rechargeable 20,000mAh (74Wh) battery, Fort Sentinel can provide up to six typical phone charges before needing an outlet. Recharge it through USB-C before you need it, or use the built-in solar panel for slow emergency top-ups when wall power is unavailable.
Built for Real Emergencies
Fort Sentinel's shockproof construction and IPX4 splash resistance help protect it from drops, bumps and light rain. Its rugged body is designed to handle the rough conditions emergency gear often faces.
Fort Sentinel is a tougher alternative to fragile everyday power banks built only for desks and handbags.
Features of Fort Sentinel
Fort Sentinel combines a 20,000mAh power reserve with emergency-ready tools designed to keep your essential devices running when outlets are unavailable.
20,000mAh (74Wh) Power Reserve
Stores enough backup power for up to six typical phone charges.
Charges 3 Devices at Once
Use USB-C, USB-A and wireless charging to power three compatible devices at the same time.
Slow Solar Emergency Top-Ups
The built-in solar panel can slowly recover small amounts of charge when wall power is unavailable.
Flashlight, SOS and Compass
Light your surroundings, signal for help and find your bearings during an emergency.
Rugged and Splash-Resistant
Shockproof construction and IPX4 splash resistance help protect against bumps, drops and light rain.
Portable and Travel-Ready
Keep it in your home, vehicle, emergency kit or travel bag so backup power is always close.
20,000mAh (74Wh) Power Reserve
Stores enough backup power for up to six typical phone charges.
Charges 3 Devices at Once
Use USB-C, USB-A and wireless charging to power three compatible devices at the same time.
Slow Solar Emergency Top-Ups
The built-in solar panel can slowly recover small amounts of charge when wall power is unavailable.
Flashlight, SOS and Compass
Light your surroundings, signal for help and find your bearings during an emergency.
Rugged and Splash-Resistant
Shockproof construction and IPX4 splash resistance help protect against bumps, drops and light rain.
Portable and Travel-Ready
Keep it in your home, vehicle, emergency kit or travel bag so backup power is always close.
How Does Fort Sentinel Work?
CHARGE IT
Fully charge via USB-C before an outage.
CONNECT DEVICES
Charge up to three devices at once.
USE SOLAR
Top up with solar when outlets aren’t available.
Special Offer On Now
50% discount on Fort Sentinel for first-time buyers
Limited Time Offer!
:
:
Special LIMITED TIME Offer:
Pay Only $ 49.99
Fast USA-based shipping
90-Day Returns for Eligible Orders
Amazing Customer Support
Extra discount when ordering more than one
Special Offer On Now
50% discount on Fort Sentinel for first-time buyers
Limited Time Offer!
:
:
Special LIMITED TIME Offer:
Pay Only $ 49.99
Fast USA-based shipping
90-Day Returns for Eligible Orders
Amazing Customer Support
Extra discount when ordering more than one
Customer Testimonials
What Our Customers Say About Us
4.8
Average Rating
88%
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Kylie D. - Orlando, FL
Verified Buyer
Here in Florida, power outages come with the weather. What worried me most was not being able to reach my kids if my phone died. I keep the Fort Sentinel charged with our hurricane supplies now. It gives me some peace of mind knowing I have a few extra phone charges ready.
Ryan P. - Memphis, TN
Verified Buyer
We lost power for nearly a week once and I ended up charging my phone in the car. I do not want to do that again, especially when gas can be hard to find. The Fort Sentinel stays in our emergency bin now, and I ordered another one for my son.
Vanessa D.
Verified Buyer
Mine arrived in three days. I charged it right away and the flashlight is brighter than I expected. So far, so good.
Angel P.
Verified Buyer
Shipping was quick and it feels solid. I have not had a real outage since it arrived, so I cannot speak to that part yet. I am still glad to have it ready.
Ashley C.
Verified Buyer
We have been upgrading our camping gear with emergencies in mind. This now lives in our bag. It charged both our phones with no problem and the flashlight came in handy after dark.
Dan P.
Verified Buyer
My wife used to tell me I worried too much. Now she asks if the Fort Sentinel is charged whenever a storm is coming. That says it all.
Alvin S.
Verified Buyer
I would not call myself a prepper. I just like being prepared. The news lately was enough to get me off the fence, and now I wish I had ordered sooner.
Jamie P.
Verified Buyer
My kids live in different states, so a dead phone during a grid outage is what worries me most. Having backup power ready gives me one less thing to think about.
Below is a list of frequently asked questions about Fort Sentinel
Fort Sentinel is a rugged, portable emergency power bank with a 20,000mAh (74Wh) battery. It can charge up to three compatible devices at once and includes wireless charging, a built-in flashlight, SOS mode, a compass and a solar panel for slow emergency top-ups.
During a blackout, your phone is how you contact family, receive emergency alerts, check the weather, use maps and call for help. Fort Sentinel stores backup power before you need it, so one dead outlet does not leave you completely cut off.
Charge Fort Sentinel through USB-C and keep it with your emergency supplies. If the grid goes down, connect your phone by USB-C, USB-A or wireless charging. Its 20,000mAh battery can provide up to six typical phone charges, while the solar panel can slowly recover small amounts of power when no outlet is available.
Each package contains one Fort Sentinel Emergency Solar Power Bank, one USB-C charging cable and a user manual.
For normal charging, connect Fort Sentinel to a wall charger using the included USB-C cable. A full charge takes approximately 6 to 8 hours, depending on the charger used. The built-in solar panel is designed for slow emergency top-ups, not as a replacement for wall charging.
Yes. Fort Sentinel is compact enough to keep in a backpack, vehicle, emergency kit or travel bag. Its 74Wh battery is below the standard 100Wh airline carry-on limit for power banks, although you should always check your airline's current rules before travelling.
Yes. Fort Sentinel includes built-in protection against overcharging, excessive current, short circuits and overheating. Its shockproof construction and IPX4 splash resistance also help protect it from bumps, drops and light rain. It is splash-resistant, not waterproof, and should never be submerged.
Very little. Keep the charging ports and solar panel clean and dry, and recharge the battery at least once every three months while it is in storage. That way, it is ready when an outage happens.
Fort Sentinel can charge most USB-C, USB-A and wireless-compatible phones, tablets, earbuds, GPS units, cameras and other small electronics. It can power up to three compatible devices at the same time.
Orders ship from our U.S. warehouse and normally arrive within 3 to 5 business days. Tracking details are emailed as soon as your order ships.
Its 20,000mAh (74Wh) battery can provide up to six typical phone charges. The exact number depends on your phone model, battery size and whether you are charging other devices at the same time.
You can request a change-of-mind return within 90 days of delivery for an unopened, unused item in its original packaging. Contact support@fortsentinel.com before sending anything back. Damaged or defective items may qualify for a replacement under our refund policy.
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