Power outages are unexpected. You need a home that's always prepared – with power that comes on quietly and instantly. That's what a battery backup generator can do.

The Dory Sentry Pro Max is a battery-powered whole-home backup power system. Gorjanc can install yours in as little as a day – so your family has power when it matters most, before the next outage arrives.

Don’t feel helpless when the power goes out. Prepare your home with a backup home power system.

White portable battery backup power generator on wheels with handles and front display, labeled “Sentry Pro Max.”

Instant power when you need it – quiet, instant, no worry or fuss.

You'll never feel caught off guard again.

Traditional gas generators can take weeks to install

Gas generators require permits, gas line work, and inspections before a single watt flows to your home. A battery-backup generator connects to your panel and is up and running fast. Gorjanc handles everything, start to finish. We have your home's emergency generator in stock and ready for installation.

Gorjanc can install your battery-powered whole-home backup power system in as little as a day.

Most Powerful

Sentry Pro Max

Maximum protection during power outages. Panel-ready, expandable, built for Northeast Ohio summers and winters.

Capacity 7.6 kWh
Continuous output 2,500W
Peak output 5,200W
Expandable Panel tie-in ready
Solar rechargeable Built-in MPPT
Switchover Instant / Seamless
Installation Same-day
Price* From $10,277

*Base price for Delivery, Drop-off, & Cords Bundle. $13,170.00 installed with Panel, Plug, & Cord. Service Plan Members save more!

Most Popular

Sentry Pro

Heavy-duty backup for essential rooms – fridge, sump pump, CPAP, other medical devices, furnace fan, and more.

Capacity 5.0 kWh
Continuous output 2,500W
Peak output 5,200W
Expandable Series linkable
Solar rechargeable Built-in MPPT
Switchover Instant / Seamless
Installation Same-day
Price* From $6,527

*Base price for Delivery, Drop-off, & Cords Bundle. $8,795.00 installed with Panel, Plug, & Cord. Service Plan Members save more!

Value Option

Sentry Plus

Essential backup for the basics: lights, refrigerator, devices, mobile phones, and peace of mind.

Capacity 3.8 kWh
Continuous output 2,500W
Peak output 5,200W
Expandable Series linkable
Solar rechargeable Built-in MPPT
Switchover Instant / Seamless
Installation Same-day
Price* From $5,277

*Base price for Delivery, Drop-off, & Cords Bundle. $7,337 installed with Panel, Plug, & Cord. Service Plan Members save more!

Need more coverage? Link multiple units or tie directly into your panel.

Two or three Sentries connected in series can back up your entire home. Gorjanc handles all panel work. Ask us about stationary battery systems for larger applications.

Gorjanc can install your battery-powered whole-home backup power system in as little as a day.

What’s the difference between a backup power system vs. a traditional gas generator?

The Dory Sentry isn’t just a generator – it’s a new category of emergency power home protection. Here’s how it performs compared to traditional gas generators and other battery alternatives on every measure.

Gorjanc-Installed

Dory Battery Generator

Maximum protection during power outages. Panel-ready, expandable, built for Northeast Ohio summers and winters.

Permit required ✅ No permit needed
Installation time ✅ Same day
Fuel required Electric & Solar
Noise level Silent
Lifespan 10+ years
Maintenance None required
Carbon monoxide risk Zero emissions
Expandable capacity Link 2–3 units
AI Safety Monitoring 3-layer real time
Switchover Seamless or Manual
Made in USA Cleveland, Ohio
Smartphone App Control anywhere
Gorjanc-Installed

Traditional Generator

Natural gas-powered protection during power outages. Integrates with home electrical panel.

Permit required Yes. Adds cost.
Installation time Up to four weeks
Fuel required Natural Gas
Noise level 50–65 dB. Outdoor only
Lifespan 12-15 years
Maintenance Annual Tune-Up
Carbon monoxide risk Potential
Expandable capacity No
AI Safety Monitoring None
Switchover Seamless
Made in USA Wisconsin
Smartphone App No
Gorjanc-Installed

Other Battery Generators

Mass-market consumer models in plastic housings. Limited lifespan and charge retention.

Permit required Varies
Installation time Days to weeks
Fuel required Wall outlet
Noise level Quiet but varies
Lifespan 3-5 years, plastic body
Maintenance None required
Carbon monoxide risk Zero emissions
Expandable capacity Limited
AI Safety Monitoring None
Switchover Manual, Limited
Made in USA Typically China
Smartphone App Limited

13 years of battery research, built into every Sentry.

The Dory Sentry was invented by one of the world's leading lithium-ion battery experts to solve his own power outage problem. Put that reliability to work in your home.

Instant, automatic switchover

The moment the grid goes down, the Sentry takes over  – with zero lag. No surge, no flicker, no restart. Your sump pump, CPAP, and refrigerator never notice. Neither does whoever is home.

AI-driven 3-layer safety

Real-time sensing measures voltage, current, load, and temperature simultaneously. No traditional gas generator or competing battery brand offers this level of built-in protection.

Solar + wall rechargeable

Recharge from the wall in about 2.5 hours, or with available solar panels options via the built-in MPPT charger.

The benefits: No fuel to buy, no storage risk, no carbon monoxide, ever.

Steel body, built for a decade

Other battery generators use plastic housings and burn out in 3–5 years. Dory's full metal body and UL-certified LiFePO4 cells are rated for 10+ years.

No oil changes. No annual tune-ups.

One Sentry Pro provides days of power for your whole home.

Connecting a Dory Sentry Pro to your electrical panel can keep all the critical devices in a 2,000 sq ft home running for up to 3–5 days. A single unit powers the following devices.

Essentials

Food & Drink

Refrigerator 2.5 days
Freezer 3.3 days
Microwave 4 hours
Air fryer 3 days
Coffee maker 4 hours

These times are estimates based on average usage for individual devices and appliances connected to one Dory Sentry.

Essentials

Health & Safety

CPAP machine 3.3 days
Oxygen Machine 7 hours
Monitor 3.8 hours
Window AC 10 hours
Air purifier 4.2 hours

These times are estimates based on average usage for individual devices and appliances connected to one Dory Sentry.

Essentials

Home Comfort

Home furnace 2 days
Lights / lamps 15 days
Sump pump 8 hours
Window AC 10 hours
Air purifier 4.2 hours

These times are estimates based on average usage for individual devices and appliances connected to one Dory Sentry.

Convenience

Electronics

Home furnace 2 days
Lights / lamps 15 days
Sump pump 8 hours
Window AC 10 hours
Air purifier 4.2 hours

These times are estimates based on average usage for individual devices and appliances connected to one Dory Sentry.

Client's experience peace of mind with a battery backup power system

Call Gorjanc to prepare your home for any outage

You shouldn't have to figure out installation, panel connections, or how the app works. Gorjanc's licensed electricians handle everything.


We handle siting the unit, panel tie-in, switchover testing, and app setup, all in one visit, the same day.

Licensed & Insured
Serving Greater Cleveland since 1963
Authorized Dory Power Dealer
Same-Day Installation
3,000+ Five-Star Google Reviews