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!

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.

OUR COMMITMENT TO SAFETY: THE GRID DOCTOR BATTERY ADVANTAGE

When it comes to backup power, nothing matters more than safety. That’s why every Grid Doctor product uses advanced Lithium Iron Phosphate (LiFePO₄) battery technology – not the cheaper, riskier lithium-ion batteries used in many competing systems.

Here’s what that means for you:

 

NO FIRE RISK LIKE LITHIUM-ION

The biggest concern with the lithium-ion batteries found in many competitor products is something called thermal runaway – a chain reaction that can cause overheating, smoke, and even fire or explosions.

This is the same battery chemistry that has caused fires in electric scooters, e-bikes, and even EV recalls.

Grid Doctor’s Lithium Iron Phosphate batteries don’t do that. They’re chemically stable, even under stress. They won’t catch fire if punctured, overheated, or overcharged.

That’s why, in aircraft backup systems and other situations where failure isn’t an option, they use the same LiFePO₄ battery technology you’ll find in Grid Doctor solar generators and power banks.

After all, Grid Doctor systems are designed to operate indoors – often near your family, pets, and valuables. That’s why we refuse to compromise on battery safety.

 

BUILT TO LAST 4X LONGER

Most lithium-ion batteries degrade quickly, often losing capacity after just 500 charge cycles.

Grid Doctor’s LiFePO₄ batteries last for 3,000+ cycles. That’s years of use, even if you charge and discharge your power system every day.

This longer lifespan also saves you money, because you won’t have to replace your battery system nearly as often.

 

RELIABLE PERFORMANCE IN TOUGH TEMPERATURES

Whether it’s a freezing blizzard or sweltering heat wave, you need power that won’t fail when you need it most.

While storing your batteries in a temperature-controlled environment is recommended, Grid Doctor’s LiFePO₄ batteries perform much better in extreme temperatures than lithium-ion systems. They’re far less likely to swell, degrade, or fail under stress.

This makes them a superior choice for home emergency power, bug-out locations, and mobile power needs.

 

THE BOTTOM LINE

We believe the best technology is the safest technology. That’s why every Grid

Doctor solar generator, expansion battery, and power bank we sell is built around non-flammable Lithium Iron Phosphate cells.

It costs a little more to do it right – but we wouldn’t trust anything else to protect your family.

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