PREPARE YOUR HOME WITH DEPENDABLE BACKUP POWER
In those unsettling moments when the lights flicker, it's easy to stay calm knowing that service will be restored quickly by trained professionals.
But how would you keep things like heat, medical equipment, and electronic devices going if the power is out for longer than expected?
The Grid Doctor 3300XP Expansion Battery Kit is the extended power supply you need in emergencies and a must-add to your Grid Doctor 3300 Solar Generator System.
- POWER HOW YOU WANT IT – Maximize your emergency power potential by stacking up to seven Grid Doctor 3300XP Expansion batteries. When integrated with your Grid Doctor 3300 Solar Generator System, you can extend your system’s power output to an impressive 16,384 Wh!
- EASY TO STACK AND STORE – Stack them up high without eating up space in your home, shed, or car.
- CHARGE IT UP ANYWHERE – You can charge the Grid Doctor 3300XP expansion battery through the car adapter, our solar panels, or directly from the Grid Doctor 3300 generator battery, keeping you powered up at home or on the move. Plus, you can use this battery while it charges for an uninterrupted power supply! (Do not use a GFCI outlet to charge the 3300XP Expansion Battery.)
- BUILT TO LAST – Thanks to its lithium iron phosphate battery, the Grid Doctor 3300XP Expansion Battery is good for over 3,000 charges, making it a smart long-term choice for backup power.
- POWER EVERYTHING YOU’VE GOT – With several power outlets, the Grid Doctor 3300XP Expansion Battery ensures your car, tools, camping gear, home appliances, and more are all ready to go. It can even power up your camper!
- EXPERIENCE ULTRA-FAST CHARGING WITH 1800W POWER: Our advanced bilateral inverter technology outpaces traditional charge controllers, offering lightning-fast solar charging in just 3-4 hours, and even quicker wall charging in 2.4 hours. Power up at unprecedented speeds and stay ready for anything.
KEEP YOUR HOME COZY AND CONNECTED
When a crisis comes, keeping things as normal as possible is essential for your family. With the Grid Doctor 3300XP Expansion Battery Kit, you can maintain a level of routine far longer, giving you a sense of security and control.
To keep the typical household operating as usual in an emergency lasting three days, the average homeowner would need to pair the Grid Doctor 3300 generator battery with multiple 3300XP expansion batteries.
This setup can keep it all running:
- Kitchen gadgets, from coffee makers to the microwave
- Fridges and freezers
- Washers and dryers
- Air conditioners and fans
- TVs, phones, and computers
- Emergency radios
- Internet routers
- Medical equipment
- Power tools
- Lights, including those with motion sensors
- Electric fences for security
- Water pumps
MORE POWER, YOUR WAY
Sheltering in place at home or setting up camp, you’ll value the versatility that comes with these 3300XP battery units. Stack them on top of your Grid Doctor 3300 generator battery to charge, building an impenetrable "power tower." Use them in that way while they charge or disconnect the units and use them individually. This is an ideal option for large groups and big families, distributing power to those who need it—in their own space.
RAPID CHARGING
Implements cutting-edge technology to charge your electric appliances significantly faster than conventional power sources.
PLAYS A DUAL ROLE
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.
You won’t go without what you need:
- COMMUNICATION – Keep cell phones, hand radios, and other electronics charged to remain connected to your survival crew. Plug in the radio or TV for breaking news, weather forecasts, and critical emergency information.
- SAFETY – Turn on your rechargeable lights to continue tasks in the dark, as well as prevent accidents and other dangers.
- MEDICAL SUPPORT – If someone in your group relies on electric medical equipment, this uninterrupted power supply will truly be a lifesaver.
- FOOD PRESERVATION – Prevent food from spoiling when stored inside a refrigerator. Food is among your most precious resources. Save as much of it as you possibly can!
- ADAPTABILITY – Adapt to different situations as your survival circumstances change. Use the generator as it charges from solar power during the day, then rely on stored energy at night.
- LONG BATTERY LIFE – Since you can charge the generator while you use it, you’re less likely to deplete the battery. This extends the life of your battery for years and years of use!
This battery provides protected charging options. Maximum Power Point Tracking, or MPPT, protects you and your electronics in an emergency through efficient charging.
This efficient charging refuels faster, ensuring your electronics operate fully sooner. Plus, the more efficient your energy use, the longer your electronics can run. Energy efficiency is optimal, reducing your dependence on unstable or unavailable power grids and making you more self-sufficient during disruptions.
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.
Refer to the included instruction manual for more detailed directions on setup, charging, using with the Expansion Battery, and more.
View Expansion Battery Instruction Manual
