3300XP Expansion Battery Kits for the 3300 & 2200 Solar Generation Systems by Grid Doctor

$997.00 $1,297.00 -24% OFF

3300XP Expansion Battery Kits for the 3300 & 2200 Solar Generation Systems by Grid Doctor

$997.00 $1,297.00 -24% OFF
Just 4 easy payments of $249.25/month on your credit card. Learn more

# of Batteries - 1 Expansion Battery

1 Expansion Battery 2 Expansion Batteries 3 Expansion Batteries 4 Expansion Batteries 5 Expansion Batteries 6 Expansion Batteries 7 Expansion Batteries

🔥4,996 People recently viewed this product

  • Description
  • Reviews
  • Delivery & Returns
  • Why Buy From Us

STACK & EXPAND YOUR POWER SUPPLY BEYOND 3300 WATT HOURS

The Grid Doctor 3300XP Expansion Battery is a high-capacity, stackable battery that expands the power of your Grid Doctor 3300 Solar Generator System (including the new 3300 w/ EMP Intercept Technology) and the Grid Doctor 2200 Solar Generator System. It lets you run your electrical appliances far longer—like having extra fuel to run a gas generator.

You can add up to seven 3300-watt expansion battery units for a combined output of 16,384 watt hours (Wh).

Double the run time of your Grid Doctor 2200 or 3300 Solar Generator Systems with every 3300XP you add!

Here’s what’s included: Grid Doctor 2200XP Battery Expansion, Smart Expansion Battery Cable, XT60 Car Charging Cable, XT60-MC4 Solar Charging Cable

PACKS A POWERFUL PUNCH – Don’t be fooled by the sleek appearance and smaller size. This expansion battery provides 2048Wh—far more than many other expansion batteries!

CREATE A 16,384Wh "POWER TOWER" – Stack up to seven of these expansion batteries to build up your own "power tower" for emergencies. Connect them to your Grid Doctor 3300 Solar Generator System to skyrocket your overall power capacity.

STACK THEM HIGH – Compact and stackable, you can place multiple 3300XP batteries right on top of your Grid Doctor 3300 Solar Generator System's battery. Stack them high in the basement, shed, closet, or even inside the trunk of your car.

THREE WAYS TO CHARGE

Connect the 3300XP to a car adapter, our 200W solar panels, or the Grid Doctor 3300 Solar Generator System's battery to charge whether you’re at home, on the road, or outdoors.

NOTE: Do not use a GFCI outlet to charge the 3300XP battery.

Solar

Grid Doctor 3300

Car

EXTENDED LIFE CYCLE

Features a durable lithium iron phosphate battery designed to run over 3,000 cycles.

DOUBLE YOUR RUN-TIME WITH EVERY 3300 XP 

The math couldn't be simpler: each 3300XP battery you add to your Grid Doctor 3300 Solar Generator System adds another 2,048 watt hours to the overall run-time. With the ability to add up to seven XPs, that power adds up fast.

KEEP THINGS RUNNING SMOOTHLY AT HOME OR AT CAMP

Here’s a quick look at what each Grid Doctor 3300XP unit can help you run longer, whether you're inside or outside:

  • All your kitchen gadgets, from the coffee pot to the microwave
  • Your fridge and a freezer
  • The washing machine
  • Window AC units and box fans
  • Your TV, computer, and phone
  • HAM radios for emergency communication
  • Your wi-fi router
  • Life-saving medical equipment
  • Power tools for quick fixes and projects
  • LED lights and lights with motion sensors
  • Electric fences for enhanced security
  • Water pumps

MODULAR UNITS: POWER YOUR WHOLE HOUSE AT ONCE


Each Grid Doctor 3300XP delivers power where and when you need it. Charge a stack of XPs together, then distribute them to power multiple areas.

  • In a blackout? Power up the units together, then allocate them to different rooms. Light up the living room, keep the kitchen fridge cold, and heat a bedroom—all at once.*
  • Bugging out in a group? Charge XPs together by day, then assign one to each tent for evening use. Lights, heaters, and more stay on through the night.

The possibilities are exciting and endless!

*The 3300XP Expansion Battery Unit contains only "DC-Out" ports. It will run devices (not included) with "cigarette lighter plugs" (12V adapters) or USB-A and USB-C plugs (like most cell phones). It can also run AC devices using an inverter adapter.

CHARGES FAST

Charges your Grid Doctor 3300 XP batteries at a rapid 1800W (when charged with the Grid Doctor 3300 generator), significantly outperforming comparable solar generators that max out at just 480W.

DOUBLE DUTY

Thanks to pass-thru charging, there’s no need to wait for a full battery. Charge the generator while you use it to power your electric appliances and keep your household running! This uninterrupted power supply allows you to keep essential electronics operational at all times.

GRID DOCTOR 3300XP BATTERY PRODUCT DETAILS

Battery Capacity: 2048Wh 3.2V/640000mAh, (51.2V/40000mAh)

Battery Type: LiFePO4

Cycle Life: 3500 Cycles

Charge Controller: MPPT Control System

Input Ports: AC (XT60), Adapter (200W); Solar Charging (XT60) (12V-48V/10A 200W Max); Car Charging (XT60) (12V-8A 24V-8.3A); Expansion Port (Recharging with Grid Doctor 3300)

Output Ports: Car Port Socket (12V-10A 120W Total); XT90 (48V-15A 720W Total); USB-A (1 Port: 5V-2.4A 12W Total); USB-C (1 Port: 5V-3A/9V-3A/12V-3A/15V-3A/20V-5A 100W PD 200W Total)

Discharging Temperature: 14°~104° F (-10°~40° C), Recommended 68°~86° F

Charging Temperature: 32°~104° F (0°~40° C), Recommended 68°~86° F

Dimensions: 18.7 x 11.65 x 9.51 Inches (475 x 296 x 242mm)

Weight: 41 lbs. (18.6 kg)

Certification: UN38.3

Additional Features: pass-thru charging, intuitive display, stackable for amplified power

Currently, we do not ship Grid Doctor products to Canada.

View Instruction Manual

GRID DOCTOR 3300XP BATTERY WARNINGS

Upon receiving your 3300XP, plug it in immediately. The battery may be depleted from shipping and it is crucial to charge it as soon as possible to preserve its lifespan.

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

If not using the battery for extended periods, charge it to at least 60% and check the power level every three months.

This battery can be charged with solar panels, AC wall outlets, and car adapters. The maximum solar charging input is 10A, with a power input cap of 200W. Exceeding 200W will not damage the unit, but the input will remain at 200W.

Ensure you read and follow all safety precautions outlined in the included instructions to guarantee the safe and proper use of the product.

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

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.

Customer Reviews
4.6 Based on 26 Reviews
5 ★
85% 
22
4 ★
4% 
1
3 ★
0% 
0
2 ★
8% 
2
1 ★
3% 
1
Customer Photos
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
  • things
  • unit
  • charge
  • power
  • item
  • part
  • Patriot Supply
  • house
  • Bill
  • appliances
TM
04/15/2025
Tina M.
United States

so far so good

I have just given it a trial run so far, but it certainly seems to be a high-quality product. I plan on setting it up for long term use...I figure since I bought it I may as well put it to use decreasing my electric bill. .

JA
11/28/2024
James A.
United States

good and bad

OK, battery works well. First problem, the expansion ports on the batteries are labeled correctly according to the picture in the manual; but they are backwards if you read the manual. I'm assuming it has a typo, or my 5 batteries would be sparking and shorting out. Possible fire hazard! Don't read the manual, go off of the pictures! Secondly ALL the connectors on the charging cables from the solar panels, and the 75" extension cord, do not come apart without using pliers, Which ruins the connectors. Apparently this is a known defect and a solution is being worked on, but once the connectors are destroyed from using them, your equipment is one big expensive pile of junk!!!! Once the connector issue is fixed, and as long as you don't read, this unit will be great.

KK
11/26/2024
Kenneth K.
United States

Amazing!!!

You guys surpassed my expectations. Some things got lost in shipment and you guys made it right with little effort on my part. It was an expensive item and I appreciated it so much. Thanks a lot for all you do!

DB
11/18/2024
Daniel B.
United States

Grid Doctor Expansion Batteries

Overall very good. Shipping was very fast (2 days). As with many things nowadays I wish instructions were better. If expansion battery charge is less than about 50% when received, bring the charge up with DC charging before connecting to Solar Generator system otherwise it may not charge.

RR
11/12/2024
Roxane R.
United States

Generator

Patriot supply makes it easy to order and they are prompt at getting things shipped. If you have difficulty you call and they give you answers. Very polite and courteous.

Discreet, Secure Shipping

For your privacy and security, packages are delivered discreetly to your doorstep in unmarked boxes.

30-Day Returns

No questions asked on unopened, unused products.

Price Guarantee

If our online product price drops within 30 days of your purchase, we’ll match the lower price, upon request, with an online store credit.

Here Are More Great Reasons to Buy from Us


We're Independent.

Around here, you won’t find any slick bankrollers or financiers behind the curtain. We’re 100% family owned and owe nothing to anyone but you!

This frees us up to do things the right way: craft our own recipes, blend our own foods, fill our own food pouches, and ship our own orders. We operate three large, fully stocked warehouses spanning over 530,000 square feet which ensures the quality packaging of your order.

Others cut corners and outsource their shipping to third parties and that's just not right. It’s also why our quality and savings are better than the rest—and we pass those right along to you with fair pricing.

Free Disaster Replacement Warranty

We are proud to offer the survival industry's very first free disaster replacement warranty. If your My Patriot Supply purchases are destroyed in a natural disaster, our warranty replaces them all, and no cost to you.

Click here to sign up for My Patriot Supply’s Disaster Replacement Warranty.

Record-Fast Shipping Speeds

Customers call our shipping "impressive," "flawless," and "man-that-came-fast" excellent.

Double Protection, No Cutting Corners

We take the extra steps that others don’t to protect your food with double-sized oxygen absorbers and ultra-thick, four-layer pouches that we test again and again to ensure quality.

5-Star Customer Service (Literally)

We've served several million American families over the past decade. Our customers have spoken, giving us 4.8 out of 5 stars based on tens of thousands of reviews.

1,800+ Calories/Day in our Food Kits

Our food kits provide 1,800 calories per day with tasty foods.


We’re Serious about Your Privacy

Ordering is 100% secure and we never sell your information. Our packages ship discreetly to your doorstep in a plain brown box with no branding.

  • Description
  • STACK & EXPAND YOUR POWER SUPPLY BEYOND 3300 WATT HOURS

    The Grid Doctor 3300XP Expansion Battery is a high-capacity, stackable battery that expands the power of your Grid Doctor 3300 Solar Generator System (including the new 3300 w/ EMP Intercept Technology) and the Grid Doctor 2200 Solar Generator System. It lets you run your electrical appliances far longer—like having extra fuel to run a gas generator.

    You can add up to seven 3300-watt expansion battery units for a combined output of 16,384 watt hours (Wh).

    Double the run time of your Grid Doctor 2200 or 3300 Solar Generator Systems with every 3300XP you add!

    Here’s what’s included: Grid Doctor 2200XP Battery Expansion, Smart Expansion Battery Cable, XT60 Car Charging Cable, XT60-MC4 Solar Charging Cable

    PACKS A POWERFUL PUNCH – Don’t be fooled by the sleek appearance and smaller size. This expansion battery provides 2048Wh—far more than many other expansion batteries!

    CREATE A 16,384Wh "POWER TOWER" – Stack up to seven of these expansion batteries to build up your own "power tower" for emergencies. Connect them to your Grid Doctor 3300 Solar Generator System to skyrocket your overall power capacity.

    STACK THEM HIGH – Compact and stackable, you can place multiple 3300XP batteries right on top of your Grid Doctor 3300 Solar Generator System's battery. Stack them high in the basement, shed, closet, or even inside the trunk of your car.

    THREE WAYS TO CHARGE

    Connect the 3300XP to a car adapter, our 200W solar panels, or the Grid Doctor 3300 Solar Generator System's battery to charge whether you’re at home, on the road, or outdoors.

    NOTE: Do not use a GFCI outlet to charge the 3300XP battery.

    Solar

    Grid Doctor 3300

    Car

    EXTENDED LIFE CYCLE

    Features a durable lithium iron phosphate battery designed to run over 3,000 cycles.

    DOUBLE YOUR RUN-TIME WITH EVERY 3300 XP 

    The math couldn't be simpler: each 3300XP battery you add to your Grid Doctor 3300 Solar Generator System adds another 2,048 watt hours to the overall run-time. With the ability to add up to seven XPs, that power adds up fast.

    KEEP THINGS RUNNING SMOOTHLY AT HOME OR AT CAMP

    Here’s a quick look at what each Grid Doctor 3300XP unit can help you run longer, whether you're inside or outside:

    • All your kitchen gadgets, from the coffee pot to the microwave
    • Your fridge and a freezer
    • The washing machine
    • Window AC units and box fans
    • Your TV, computer, and phone
    • HAM radios for emergency communication
    • Your wi-fi router
    • Life-saving medical equipment
    • Power tools for quick fixes and projects
    • LED lights and lights with motion sensors
    • Electric fences for enhanced security
    • Water pumps

    MODULAR UNITS: POWER YOUR WHOLE HOUSE AT ONCE


    Each Grid Doctor 3300XP delivers power where and when you need it. Charge a stack of XPs together, then distribute them to power multiple areas.

    • In a blackout? Power up the units together, then allocate them to different rooms. Light up the living room, keep the kitchen fridge cold, and heat a bedroom—all at once.*
    • Bugging out in a group? Charge XPs together by day, then assign one to each tent for evening use. Lights, heaters, and more stay on through the night.

    The possibilities are exciting and endless!

    *The 3300XP Expansion Battery Unit contains only "DC-Out" ports. It will run devices (not included) with "cigarette lighter plugs" (12V adapters) or USB-A and USB-C plugs (like most cell phones). It can also run AC devices using an inverter adapter.

    CHARGES FAST

    Charges your Grid Doctor 3300 XP batteries at a rapid 1800W (when charged with the Grid Doctor 3300 generator), significantly outperforming comparable solar generators that max out at just 480W.

    DOUBLE DUTY

    Thanks to pass-thru charging, there’s no need to wait for a full battery. Charge the generator while you use it to power your electric appliances and keep your household running! This uninterrupted power supply allows you to keep essential electronics operational at all times.

    GRID DOCTOR 3300XP BATTERY PRODUCT DETAILS

    Battery Capacity: 2048Wh 3.2V/640000mAh, (51.2V/40000mAh)

    Battery Type: LiFePO4

    Cycle Life: 3500 Cycles

    Charge Controller: MPPT Control System

    Input Ports: AC (XT60), Adapter (200W); Solar Charging (XT60) (12V-48V/10A 200W Max); Car Charging (XT60) (12V-8A 24V-8.3A); Expansion Port (Recharging with Grid Doctor 3300)

    Output Ports: Car Port Socket (12V-10A 120W Total); XT90 (48V-15A 720W Total); USB-A (1 Port: 5V-2.4A 12W Total); USB-C (1 Port: 5V-3A/9V-3A/12V-3A/15V-3A/20V-5A 100W PD 200W Total)

    Discharging Temperature: 14°~104° F (-10°~40° C), Recommended 68°~86° F

    Charging Temperature: 32°~104° F (0°~40° C), Recommended 68°~86° F

    Dimensions: 18.7 x 11.65 x 9.51 Inches (475 x 296 x 242mm)

    Weight: 41 lbs. (18.6 kg)

    Certification: UN38.3

    Additional Features: pass-thru charging, intuitive display, stackable for amplified power

    Currently, we do not ship Grid Doctor products to Canada.

    View Instruction Manual

    GRID DOCTOR 3300XP BATTERY WARNINGS

    Upon receiving your 3300XP, plug it in immediately. The battery may be depleted from shipping and it is crucial to charge it as soon as possible to preserve its lifespan.

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

    If not using the battery for extended periods, charge it to at least 60% and check the power level every three months.

    This battery can be charged with solar panels, AC wall outlets, and car adapters. The maximum solar charging input is 10A, with a power input cap of 200W. Exceeding 200W will not damage the unit, but the input will remain at 200W.

    Ensure you read and follow all safety precautions outlined in the included instructions to guarantee the safe and proper use of the product.

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

    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.

  • Reviews
  • Customer Reviews
    4.6 Based on 26 Reviews
    5 ★
    85% 
    22
    4 ★
    4% 
    1
    3 ★
    0% 
    0
    2 ★
    8% 
    2
    1 ★
    3% 
    1
    Customer Photos
    Write a Review Ask a Question

    Thank you for submitting a review!

    Your input is very much appreciated. Share it with your friends so they can enjoy it too!

    Filter Reviews:
    • things
    • unit
    • charge
    • power
    • item
    • part
    • Patriot Supply
    • house
    • Bill
    • appliances
    TM
    04/15/2025
    Tina M.
    United States

    so far so good

    I have just given it a trial run so far, but it certainly seems to be a high-quality product. I plan on setting it up for long term use...I figure since I bought it I may as well put it to use decreasing my electric bill. .

    JA
    11/28/2024
    James A.
    United States

    good and bad

    OK, battery works well. First problem, the expansion ports on the batteries are labeled correctly according to the picture in the manual; but they are backwards if you read the manual. I'm assuming it has a typo, or my 5 batteries would be sparking and shorting out. Possible fire hazard! Don't read the manual, go off of the pictures! Secondly ALL the connectors on the charging cables from the solar panels, and the 75" extension cord, do not come apart without using pliers, Which ruins the connectors. Apparently this is a known defect and a solution is being worked on, but once the connectors are destroyed from using them, your equipment is one big expensive pile of junk!!!! Once the connector issue is fixed, and as long as you don't read, this unit will be great.

    KK
    11/26/2024
    Kenneth K.
    United States

    Amazing!!!

    You guys surpassed my expectations. Some things got lost in shipment and you guys made it right with little effort on my part. It was an expensive item and I appreciated it so much. Thanks a lot for all you do!

    DB
    11/18/2024
    Daniel B.
    United States

    Grid Doctor Expansion Batteries

    Overall very good. Shipping was very fast (2 days). As with many things nowadays I wish instructions were better. If expansion battery charge is less than about 50% when received, bring the charge up with DC charging before connecting to Solar Generator system otherwise it may not charge.

    RR
    11/12/2024
    Roxane R.
    United States

    Generator

    Patriot supply makes it easy to order and they are prompt at getting things shipped. If you have difficulty you call and they give you answers. Very polite and courteous.

  • Delivery & Returns
  • Discreet, Secure Shipping

    For your privacy and security, packages are delivered discreetly to your doorstep in unmarked boxes.

    30-Day Returns

    No questions asked on unopened, unused products.

    Price Guarantee

    If our online product price drops within 30 days of your purchase, we’ll match the lower price, upon request, with an online store credit.

  • Why Buy From Us
  • Here Are More Great Reasons to Buy from Us


    We're Independent.

    Around here, you won’t find any slick bankrollers or financiers behind the curtain. We’re 100% family owned and owe nothing to anyone but you!

    This frees us up to do things the right way: craft our own recipes, blend our own foods, fill our own food pouches, and ship our own orders. We operate three large, fully stocked warehouses spanning over 530,000 square feet which ensures the quality packaging of your order.

    Others cut corners and outsource their shipping to third parties and that's just not right. It’s also why our quality and savings are better than the rest—and we pass those right along to you with fair pricing.

    Free Disaster Replacement Warranty

    We are proud to offer the survival industry's very first free disaster replacement warranty. If your My Patriot Supply purchases are destroyed in a natural disaster, our warranty replaces them all, and no cost to you.

    Click here to sign up for My Patriot Supply’s Disaster Replacement Warranty.

    Record-Fast Shipping Speeds

    Customers call our shipping "impressive," "flawless," and "man-that-came-fast" excellent.

    Double Protection, No Cutting Corners

    We take the extra steps that others don’t to protect your food with double-sized oxygen absorbers and ultra-thick, four-layer pouches that we test again and again to ensure quality.

    5-Star Customer Service (Literally)

    We've served several million American families over the past decade. Our customers have spoken, giving us 4.8 out of 5 stars based on tens of thousands of reviews.

    1,800+ Calories/Day in our Food Kits

    Our food kits provide 1,800 calories per day with tasty foods.


    We’re Serious about Your Privacy

    Ordering is 100% secure and we never sell your information. Our packages ship discreetly to your doorstep in a plain brown box with no branding.

People often buy

+
+
+
+
Total price: $2,470.95$2,634.95

© 2025 My Patriot Supply. All rights reserved.