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More Power. More Protection. More Preparedness.

Your all-in-one backup power solution — with unmatched protection and a FREE expansion battery for double capacity.

EMP Intercept Technology

Shields sensitive electronics from EMPs, lightning, and surges in just 3 nanoseconds

Double the Capacity — FREE

Includes a 3300XP Expansion Battery (2048Wh) at no extra cost — total 4,096Wh

Massive 1,000W Solar Input

Connect up to 5× 200W panels for faster, more reliable charging

Runs Multiple Appliances & RVs

3300W pure sine wave inverter with 30A RV output powers big and small essentials.

Long-Life LiFePO₄ Battery

Rated for 3,500+ cycles — years of dependable use before capacity fades.

UPS Mode for Instant Backup

Keeps critical devices running seamlessly during outages.

See Run-Time Examples

Run Time Examples

With 4,096Wh of total capacity (your Grid Doctor 3300 plus the FREE 3300XP Expansion Battery), you’ll have hours — or days — of dependable power.

Device

Estimated Run Time*

Refrigerator (150W)

22+ hours

CPAP Machine (40W)

90+ hours

LED TV (100W)

36+ hours

Laptop (50W)

72+ hours

LED Light Bulb (10W)

360+ hours

Microwave (1000W)

3+ hours

Coffee Maker (900W)

3.5 hours

Smartphone (12W)

300 Charges

Portable Fan (50W)

72+ hours

Three Reliable Ways to Charge

Power up your emergency solar generator three ways — by the sun, from a standard AC wall outlet, or through your vehicle’s adapter. Whether the grid is down, you’re stuck in your car, or you’re off-grid in the woods, you’ll have a way to keep energy flowing.

Charge virtually any appliance or device you own.

(Note: Do not use a GFCI outlet to charge this device)

Solar

Wall Outlet

Car

Car Port

Wall Outlet

Solar Panels

Learn More About the Tech

Smarter Power. Stronger Protection. More Peace of Mind.

First-of-Its-Kind EMP Intercept Technology

Think of it as a surge protector on steroids — and it’s the first time this level of defense has ever been built into a solar generator. EMP Intercept Technology protects against electromagnetic pulses from solar flares, coronal mass ejections, or even nuclear events. It’s seamlessly integrated into the Grid Doctor 3300, working 24/7 with no extra buttons or setup. With the ability to stop up to 260,000 Amps AC and 152,000 Amps DC in just 3 nanoseconds, your sensitive electronics stay safe from even the most extreme surges.

Optimized Solar Charging with MPPT

The Grid Doctor 3300 uses a built-in Maximum Power Point Tracking (MPPT) charge controller — the same smart tech found in premium generators — to squeeze every ounce of power from your solar panels. MPPT automatically adjusts to changing sunlight conditions, delivering faster, more efficient charging without wasting a watt. And unlike overpriced competitors, you get this top-tier technology without the premium price tag.

UPS: Instant, Uninterrupted Power

When the grid goes down, many generators have a dangerous “hiccup” before backup power kicks in — not the Grid Doctor 3300. Its Uninterruptible Power Supply (UPS) feature switches over instantly, keeping critical systems running without a single flicker. That means:

  • No life-threatening interruptions to medical devices
  • No data loss or electronics damage from sudden shutdowns
  • No security breaches from offline alarms or cameras
  • No dropped calls or dead internet routers in an emergency
  • No loss of running water from electric pump failures

Pass-Thru Charging: Power While You Recharge

With pass-thru charging, you can charge the Grid Doctor 3300 while using it to run your devices. Perfect for:

  • Keeping refrigerators cold during long outages
  • Powering lights for safety while topping off the battery
  • Using solar power by day, stored energy by night
  • Reducing battery wear by avoiding constant drain-and-recharge cycles

Bottom line: The Grid Doctor 3300 isn’t just a solar generator — it’s a smarter, safer, and more seamless way to keep life running as normal when the power goes out.

Smarter Power. Stronger Protection. More Peace of Mind.

First-of-Its-Kind EMP Intercept Technology

Think of it as a surge protector on steroids — and it’s the first time this level of defense has ever been built into a solar generator. EMP Intercept Technology protects against electromagnetic pulses from solar flares, coronal mass ejections, or even nuclear events. It’s seamlessly integrated into the Grid Doctor 3300, working 24/7 with no extra buttons or setup. With the ability to stop up to 260,000 Amps AC and 152,000 Amps DC in just 3 nanoseconds, your sensitive electronics stay safe from even the most extreme surges.

Optimized Solar Charging with MPPT

The Grid Doctor 3300 uses a built-in Maximum Power Point Tracking (MPPT) charge controller — the same smart tech found in premium generators — to squeeze every ounce of power from your solar panels. MPPT automatically adjusts to changing sunlight conditions, delivering faster, more efficient charging without wasting a watt. And unlike overpriced competitors, you get this top-tier technology without the premium price tag.

UPS: Instant, Uninterrupted Power

When the grid goes down, many generators have a dangerous “hiccup” before backup power kicks in — not the Grid Doctor 3300. Its Uninterruptible Power Supply (UPS) feature switches over instantly, keeping critical systems running without a single flicker. That means:

  • No life-threatening interruptions to medical devices
  • No data loss or electronics damage from sudden shutdowns
  • No security breaches from offline alarms or cameras
  • No dropped calls or dead internet routers in an emergency
  • No loss of running water from electric pump failures

Pass-Thru Charging: Power While You Recharge

With pass-thru charging, you can charge the Grid Doctor 3300 while using it to run your devices. Perfect for:

  • Keeping refrigerators cold during long outages
  • Powering lights for safety while topping off the battery
  • Using solar power by day, stored energy by night
  • Reducing battery wear by avoiding constant drain-and-recharge cycles

Bottom line: The Grid Doctor 3300 isn’t just a solar generator — it’s a smarter, safer, and more seamless way to keep life running as normal when the power goes out.

Watch the Setup Video 

From Box to Powered in Minutes

Watch how easy it is to unbox, set up, and start using your Grid Doctor 3300. In just a few simple steps, you’ll be charging, connecting, and powering your essentials — whether you’re at home, on the road, or off the grid.
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Protect Your Gear — and Yourself

Cold weather will impact battery capacity. Use this product in ambient temperatures ranging from 32°F and 86°F for the most maximized performance.

Do not place in hot, humid, or dusty environments.

Do not heat or throw into fire, water, or other liquids.

Do not drop or disassemble.

Do not allow children to play with this device.

This device may be hot while charging. Exercise caution when handling. Keep in a well-ventilated area while charging.

Why Americans Choose Grid Doctor

YOUR QUESTIONS. ANSWERED

Still have questions? Our U.S.-based preparedness experts are standing by to help. 

CALL US:

866.229.0927

EMAIL:

[email protected]

Can I use the Grid Doctor 3300 indoors?

Yes. The Grid Doctor 3300 is a solar-powered generator, so it produces no fumes. It’s safe to use inside your home, RV, or cabin.

How long will it run my essentials?

With the included 3300XP Expansion Battery, you have a total of 4,096Wh of capacity. That’s enough to power a full-size fridge for over 22 hours, a CPAP for 90+ hours, or charge a phone 300+ times. (Actual run times vary based on device wattage and usage.)

How do I charge the generator?

Three ways:

  1. Solar – Connect up to five 200W panels (1,000W max) for the fastest solar charge.
  2. AC Wall Outlet – Quick charge in hours (1,800W) or slow charge overnight (600W).
  3. Car Adapter – Use the included XT60 cable for on-the-road charging.

What's the Return Policy? 

We accept returns on unused and unopened products within 30 days for a full refund less shipping. If your product is faulty in any way, please call our 24/7 customer service team for assistance. 

What is the Disaster Warranty?

It’s our promise to stand by you when disaster strikes.
My Patriot Supply offers the first and only free Disaster Replacement Warranty in the survival industry. If your gear is destroyed in a natural disaster—like a flood, wildfire, hurricane, earthquake, or tornado—we’ll replace it at no cost to you.

All you have to do is opt in to our free warranty program (it takes mere seconds) at mypatriotsupply.com/warranty-program. Your coverage starts the day you buy and lasts through the product’s shelf life—up to 25 years.

We believe peace of mind means more than just long shelf life. It means knowing your investment is protected, even in the worst-case scenario.
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