(954) 249-2314
This is a practical extended-outage package for customers who want more battery storage and a reliable way to keep charging when the weather is bad. The bundle combines one EcoFlow DELTA Pro Ultra X inverter, three 6,144Wh Smart Extra Batteries and a FREE EcoFlow FlowMaster Generator Rectifier.
You get 18,432Wh of LFP battery storage, 120V/240V output, up to 10,000W of solar input and generator-assisted charging through the included FlowMaster. It is a strong fit for hurricane backup, off-grid properties, refrigeration, pumps and selected high-demand household loads.
Sale price: $10,197 with free shipping in the contiguous United States. Need help checking a generator, air conditioner or well pump? Call Frank at 954-249-2314.
Bundle Highlights
- 18,432Wh total capacity: Three 6,144Wh DELTA Pro Ultra X Smart Extra Batteries.
- 120V/240V power: Supports standard household loads and compatible 240V equipment.
- Up to 12,000W AC output: Final available output depends on battery-port configuration; see the important three-battery note below.
- Up to 10,000W solar input: Two high-voltage PV inputs support up to 5,000W each.
- FREE FlowMaster Generator Rectifier: Converts compatible portable-generator AC output into stable DC charging power for DELTA Pro Ultra X.
- Generator and solar flexibility: Use the FlowMaster to select generator or PV charging during extended outages.
- Expandable system: One Ultra X inverter supports up to ten compatible 6,144Wh battery packs.
- Fast UPS response: Under 10ms when the Ultra X operates independently.
What Is Included
- 1 × EcoFlow DELTA Pro Ultra X Inverter
- 3 × EcoFlow DELTA Pro Ultra X Smart Extra Batteries, 6,144Wh each
- FREE: 1 × EcoFlow FlowMaster Generator Rectifier
- EcoFlow PV Switch Box
- Manufacturer-supplied battery connection cables, AC charging cable and standard packaged accessories
Bundle SKU: EFDELTAPROUX-US-3EB
This page combines genuine EcoFlow products into the advertised bundle. Confirm final packaged accessories at the time of order because manufacturer packaging can change.
Why the Free FlowMaster Matters
Solar is excellent when conditions cooperate, but a long outage can include clouds, rain or smoke that reduces panel production. The FlowMaster Generator Rectifier gives you another charging path. It converts AC power from a compatible portable gasoline generator into stable DC charging power for the DELTA Pro Ultra X.
EcoFlow states that the FlowMaster supports virtually all portable gasoline generators rated up to 12kW. Generator outlet, voltage, frequency, grounding, fuel supply and actual continuous output still need to be checked. The FlowMaster connects through the PV charging path, so solar and generator charging must be planned around the available PV ports and switch configuration.
Best Uses for This Bundle
- Hurricane and multi-day outage backup: Store power in advance and recharge from solar or a compatible generator as conditions change.
- Refrigerators and freezers: Maintain food storage while also supporting lights, internet, televisions and device charging.
- Well and sump pumps: Supports many 120V and 240V pumps after running amps and startup surge are verified.
- Selected air-conditioning loads: The Ultra X can power demanding HVAC equipment, but condenser voltage, running current, locked-rotor amps and soft-starter requirements must be reviewed first.
- Off-grid cabins and remote properties: Combine large battery storage with generator-assisted and solar charging.
- Workshops and mobile operations: Run compatible tools and 120V/240V equipment where grid service is unavailable.
- Customers who need more than 12.3kWh: Three batteries extend runtime without immediately moving to a four-battery package.
Important Three-Battery Output Note
Three batteries provide 18.4kWh of capacity, but maximum output depends on how the batteries are divided between the inverter's powered battery ports. EcoFlow recommends connecting batteries to both powered battery ports and keeping the number of batteries balanced when full 12kW output is required. Because three batteries cannot be divided evenly, the system may not reach the full 12kW rating in every three-battery configuration.
If guaranteed maximum output is more important than runtime, call us before ordering. We can help review the load and determine whether a two-battery, four-battery or multi-inverter configuration is the better fit.
DELTA Pro Ultra X Inverter Specifications
| Rated AC output | Up to 12,000W; 120/240V; 60Hz, subject to battery configuration |
|---|---|
| Maximum expanded output | Up to 36kW with three compatible inverters |
| AC outlets | 2 × NEMA 5-20, 120V/20A; 1 × NEMA L14-30, 120/240V/30A; 1 × NEMA 14-50, 120/240V/50A |
| Rated AC input | Up to 12,000W; 100/200–120/240V; 50A |
| PV/DC input | 10,000W total; 2 ports; 80–500V, 15A, 5,000W maximum per port |
| UPS transfer time | Under 10ms standalone; under 20ms with compatible Smart Home Panel 3 or Smart Gateway integration |
| Noise level | <30dB at 0.5m, 77°F ambient and 4,000W output |
| Ingress protection | IP54 |
| Operating/storage temperature | -4°F to 122°F (-20°C to 50°C) |
| Dimensions | 26.6 × 18.7 × 9.06 in. (675 × 475 × 230mm) |
| Net weight | Approximately 70.1 lb. (34.5kg) |
| Warranty | 5-year standard manufacturer warranty |
Included Battery Specifications
| Battery quantity | 3 |
|---|---|
| Capacity per battery | 6,144Wh |
| Total included capacity | 18,432Wh / 18.432kWh |
| Battery chemistry | LiFePO4 / LFP |
| Maximum batteries per inverter | Up to 10 compatible Smart Extra Batteries |
| Dimensions per battery | 26 × 18 × 8 in. (660 × 455 × 204mm) |
| Weight per battery | Approximately 111.3 lb. (50.5kg) |
| Battery temperature range | -4°F to 113°F (-20°C to 45°C), operating and storage |
| Battery warranty | 5 years |
FlowMaster Generator Rectifier Details
- Designed for EcoFlow DELTA Pro Ultra X generator-assisted charging
- Converts compatible generator AC output into stable DC charging power
- Supports portable gasoline generators rated up to 12kW according to EcoFlow
- Provides generator/PV source selection through the rectifier controls
- Plug-and-play EcoFlow system connection when installed according to the manufacturer instructions
- Included free with this bundle while the promotion remains active
Runtime Examples
The 18,432Wh rating is nominal battery capacity. Simple capacity calculations before efficiency losses and reserve would equal approximately:
- About 18.4 hours at a steady 1,000W load
- About 9.2 hours at a steady 2,000W load
- About 6.1 hours at a steady 3,000W load
Real runtime will be lower and varies with inverter losses, battery reserve, temperature, equipment cycling and startup demand.
Installation and Compatibility Notes
- Professional electrical work may be required for transfer switches, inlet connections or whole-home integration.
- This bundle does not include Smart Home Panel 3, Smart Gateway, installation labor, permits, breakers, conduit or site-specific wiring unless listed separately in your quote.
- Solar arrays must remain within the 80–500V, 15A and 5,000W-per-port limits in all weather. Cold-weather open-circuit voltage must be calculated.
- Verify generator running wattage, outlet, voltage, frequency and grounding before using the FlowMaster.
- Verify running amps and startup surge for air conditioners, well pumps, compressors and other motor loads.
- DELTA Pro Ultra X is not a grid-export system and does not send battery power back to the utility grid.
Frequently Asked Questions
How much capacity is included?
Three 6,144Wh batteries provide 18,432Wh, or 18.432kWh, of nominal LFP storage.
Is the FlowMaster Generator Rectifier really free?
Yes. One EcoFlow FlowMaster Generator Rectifier is included free with this advertised bundle while the promotion is active.
Does the FlowMaster replace the generator?
No. It is a charging accessory. You still need a compatible portable gasoline generator and the required generator cables and connections.
Can I use solar and a generator?
Yes, but the FlowMaster connects through the PV charging path and includes source-selection controls. The final connection plan depends on the solar array, available PV inputs and generator configuration.
Will three batteries deliver the full 12,000W output?
Not necessarily. EcoFlow recommends connecting batteries to both powered battery ports and balancing battery quantity between them for full 12kW output. With three batteries, the ports cannot be evenly balanced, so maximum output may be reduced depending on configuration.
Can it run central air conditioning?
It can run many high-demand 120V/240V loads, but we must verify the condenser's running current, locked-rotor amps, startup watts and any soft starter. Call us before ordering if central AC is a priority.
Can it power a well pump?
It can power many 120V and 240V pumps after voltage, running amps and startup surge are confirmed.
Can I add more batteries later?
Yes. One Ultra X inverter supports up to ten compatible 6,144Wh batteries. A fourth battery also allows a more balanced two-and-two battery-port arrangement.
How much solar can I connect?
Up to 10,000W total across two high-voltage PV inputs, with an 80–500V, 15A and 5,000W maximum for each input.
Is a transfer switch or Smart Home Panel included?
No. The bundle includes the Ultra X inverter, three batteries and free FlowMaster. Home-integration equipment and installation are separate unless they appear in your written quote.
Why Buy from AllProGenerators?
- USA-based product help before and after the sale
- Free contiguous-U.S. shipping unless otherwise noted
- Help reviewing household loads, HVAC startup requirements, generators and solar compatibility
- Real phone support at 954-249-2314
Specifications are based on current EcoFlow manufacturer information and may change without notice. Actual output, runtime and charging performance depend on installation, battery configuration, connected loads, generator capability, temperature and system settings. Promotional availability of the free FlowMaster is subject to change.
Best Use Cases
- Extended hurricane and outage backup with 18.4kWh of battery storage
- Generator-assisted charging when sunlight or grid power is limited
- 120V/240V backup for compatible home appliances and equipment
- Off-grid properties that want to combine battery storage with an existing portable generator
- Systems that may add solar, home integration or more batteries later
| Shipping | This item ships to |
 |
Fast Shipping in the USA. Items ship the same or next day We process orders 7 days a week to ensure the fastest shipping possible. All generators are shipped as fast as possible out of several US locations to ensure the fastest delivery. |
|
 |
We Put Our Customers First We have done the research for you to find the best manufacturers with the best warranties. Every unit on our site is covered by a high quality manufacturers warranty. |
|
 |
We offer the absolute lowest price we can offer |
|
 |
We insist that you love our service. If you're unhappy for any reason whatsoever, just let us know and we'll bend over backwards to make things right again. |
|
 |
Ordering from AllProGenerators.com is 100% safe and secure so you can rest easy. Your personal details are never shared, sold or rented to anyone either. |
Description
This is a practical extended-outage package for customers who want more battery storage and a reliable way to keep charging when the weather is bad. The bundle combines one EcoFlow DELTA Pro Ultra X inverter, three 6,144Wh Smart Extra Batteries and a FREE EcoFlow FlowMaster Generator Rectifier.
You get 18,432Wh of LFP battery storage, 120V/240V output, up to 10,000W of solar input and generator-assisted charging through the included FlowMaster. It is a strong fit for hurricane backup, off-grid properties, refrigeration, pumps and selected high-demand household loads.
Sale price: $10,197 with free shipping in the contiguous United States. Need help checking a generator, air conditioner or well pump? Call Frank at 954-249-2314.
Bundle Highlights
- 18,432Wh total capacity: Three 6,144Wh DELTA Pro Ultra X Smart Extra Batteries.
- 120V/240V power: Supports standard household loads and compatible 240V equipment.
- Up to 12,000W AC output: Final available output depends on battery-port configuration; see the important three-battery note below.
- Up to 10,000W solar input: Two high-voltage PV inputs support up to 5,000W each.
- FREE FlowMaster Generator Rectifier: Converts compatible portable-generator AC output into stable DC charging power for DELTA Pro Ultra X.
- Generator and solar flexibility: Use the FlowMaster to select generator or PV charging during extended outages.
- Expandable system: One Ultra X inverter supports up to ten compatible 6,144Wh battery packs.
- Fast UPS response: Under 10ms when the Ultra X operates independently.
What Is Included
- 1 × EcoFlow DELTA Pro Ultra X Inverter
- 3 × EcoFlow DELTA Pro Ultra X Smart Extra Batteries, 6,144Wh each
- FREE: 1 × EcoFlow FlowMaster Generator Rectifier
- EcoFlow PV Switch Box
- Manufacturer-supplied battery connection cables, AC charging cable and standard packaged accessories
Bundle SKU: EFDELTAPROUX-US-3EB
This page combines genuine EcoFlow products into the advertised bundle. Confirm final packaged accessories at the time of order because manufacturer packaging can change.
Why the Free FlowMaster Matters
Solar is excellent when conditions cooperate, but a long outage can include clouds, rain or smoke that reduces panel production. The FlowMaster Generator Rectifier gives you another charging path. It converts AC power from a compatible portable gasoline generator into stable DC charging power for the DELTA Pro Ultra X.
EcoFlow states that the FlowMaster supports virtually all portable gasoline generators rated up to 12kW. Generator outlet, voltage, frequency, grounding, fuel supply and actual continuous output still need to be checked. The FlowMaster connects through the PV charging path, so solar and generator charging must be planned around the available PV ports and switch configuration.
Best Uses for This Bundle
- Hurricane and multi-day outage backup: Store power in advance and recharge from solar or a compatible generator as conditions change.
- Refrigerators and freezers: Maintain food storage while also supporting lights, internet, televisions and device charging.
- Well and sump pumps: Supports many 120V and 240V pumps after running amps and startup surge are verified.
- Selected air-conditioning loads: The Ultra X can power demanding HVAC equipment, but condenser voltage, running current, locked-rotor amps and soft-starter requirements must be reviewed first.
- Off-grid cabins and remote properties: Combine large battery storage with generator-assisted and solar charging.
- Workshops and mobile operations: Run compatible tools and 120V/240V equipment where grid service is unavailable.
- Customers who need more than 12.3kWh: Three batteries extend runtime without immediately moving to a four-battery package.
Important Three-Battery Output Note
Three batteries provide 18.4kWh of capacity, but maximum output depends on how the batteries are divided between the inverter's powered battery ports. EcoFlow recommends connecting batteries to both powered battery ports and keeping the number of batteries balanced when full 12kW output is required. Because three batteries cannot be divided evenly, the system may not reach the full 12kW rating in every three-battery configuration.
If guaranteed maximum output is more important than runtime, call us before ordering. We can help review the load and determine whether a two-battery, four-battery or multi-inverter configuration is the better fit.
DELTA Pro Ultra X Inverter Specifications
| Rated AC output | Up to 12,000W; 120/240V; 60Hz, subject to battery configuration |
|---|---|
| Maximum expanded output | Up to 36kW with three compatible inverters |
| AC outlets | 2 × NEMA 5-20, 120V/20A; 1 × NEMA L14-30, 120/240V/30A; 1 × NEMA 14-50, 120/240V/50A |
| Rated AC input | Up to 12,000W; 100/200–120/240V; 50A |
| PV/DC input | 10,000W total; 2 ports; 80–500V, 15A, 5,000W maximum per port |
| UPS transfer time | Under 10ms standalone; under 20ms with compatible Smart Home Panel 3 or Smart Gateway integration |
| Noise level | <30dB at 0.5m, 77°F ambient and 4,000W output |
| Ingress protection | IP54 |
| Operating/storage temperature | -4°F to 122°F (-20°C to 50°C) |
| Dimensions | 26.6 × 18.7 × 9.06 in. (675 × 475 × 230mm) |
| Net weight | Approximately 70.1 lb. (34.5kg) |
| Warranty | 5-year standard manufacturer warranty |
Included Battery Specifications
| Battery quantity | 3 |
|---|---|
| Capacity per battery | 6,144Wh |
| Total included capacity | 18,432Wh / 18.432kWh |
| Battery chemistry | LiFePO4 / LFP |
| Maximum batteries per inverter | Up to 10 compatible Smart Extra Batteries |
| Dimensions per battery | 26 × 18 × 8 in. (660 × 455 × 204mm) |
| Weight per battery | Approximately 111.3 lb. (50.5kg) |
| Battery temperature range | -4°F to 113°F (-20°C to 45°C), operating and storage |
| Battery warranty | 5 years |
FlowMaster Generator Rectifier Details
- Designed for EcoFlow DELTA Pro Ultra X generator-assisted charging
- Converts compatible generator AC output into stable DC charging power
- Supports portable gasoline generators rated up to 12kW according to EcoFlow
- Provides generator/PV source selection through the rectifier controls
- Plug-and-play EcoFlow system connection when installed according to the manufacturer instructions
- Included free with this bundle while the promotion remains active
Runtime Examples
The 18,432Wh rating is nominal battery capacity. Simple capacity calculations before efficiency losses and reserve would equal approximately:
- About 18.4 hours at a steady 1,000W load
- About 9.2 hours at a steady 2,000W load
- About 6.1 hours at a steady 3,000W load
Real runtime will be lower and varies with inverter losses, battery reserve, temperature, equipment cycling and startup demand.
Installation and Compatibility Notes
- Professional electrical work may be required for transfer switches, inlet connections or whole-home integration.
- This bundle does not include Smart Home Panel 3, Smart Gateway, installation labor, permits, breakers, conduit or site-specific wiring unless listed separately in your quote.
- Solar arrays must remain within the 80–500V, 15A and 5,000W-per-port limits in all weather. Cold-weather open-circuit voltage must be calculated.
- Verify generator running wattage, outlet, voltage, frequency and grounding before using the FlowMaster.
- Verify running amps and startup surge for air conditioners, well pumps, compressors and other motor loads.
- DELTA Pro Ultra X is not a grid-export system and does not send battery power back to the utility grid.
Frequently Asked Questions
How much capacity is included?
Three 6,144Wh batteries provide 18,432Wh, or 18.432kWh, of nominal LFP storage.
Is the FlowMaster Generator Rectifier really free?
Yes. One EcoFlow FlowMaster Generator Rectifier is included free with this advertised bundle while the promotion is active.
Does the FlowMaster replace the generator?
No. It is a charging accessory. You still need a compatible portable gasoline generator and the required generator cables and connections.
Can I use solar and a generator?
Yes, but the FlowMaster connects through the PV charging path and includes source-selection controls. The final connection plan depends on the solar array, available PV inputs and generator configuration.
Will three batteries deliver the full 12,000W output?
Not necessarily. EcoFlow recommends connecting batteries to both powered battery ports and balancing battery quantity between them for full 12kW output. With three batteries, the ports cannot be evenly balanced, so maximum output may be reduced depending on configuration.
Can it run central air conditioning?
It can run many high-demand 120V/240V loads, but we must verify the condenser's running current, locked-rotor amps, startup watts and any soft starter. Call us before ordering if central AC is a priority.
Can it power a well pump?
It can power many 120V and 240V pumps after voltage, running amps and startup surge are confirmed.
Can I add more batteries later?
Yes. One Ultra X inverter supports up to ten compatible 6,144Wh batteries. A fourth battery also allows a more balanced two-and-two battery-port arrangement.
How much solar can I connect?
Up to 10,000W total across two high-voltage PV inputs, with an 80–500V, 15A and 5,000W maximum for each input.
Is a transfer switch or Smart Home Panel included?
No. The bundle includes the Ultra X inverter, three batteries and free FlowMaster. Home-integration equipment and installation are separate unless they appear in your written quote.
Why Buy from AllProGenerators?
- USA-based product help before and after the sale
- Free contiguous-U.S. shipping unless otherwise noted
- Help reviewing household loads, HVAC startup requirements, generators and solar compatibility
- Real phone support at 954-249-2314
Specifications are based on current EcoFlow manufacturer information and may change without notice. Actual output, runtime and charging performance depend on installation, battery configuration, connected loads, generator capability, temperature and system settings. Promotional availability of the free FlowMaster is subject to change.
Best Use Cases
- Extended hurricane and outage backup with 18.4kWh of battery storage
- Generator-assisted charging when sunlight or grid power is limited
- 120V/240V backup for compatible home appliances and equipment
- Off-grid properties that want to combine battery storage with an existing portable generator
- Systems that may add solar, home integration or more batteries later
Shipping
| Shipping | This item ships to |
Delivery
|
Fast Shipping in the USA. Items ship the same or next day We process orders 7 days a week to ensure the fastest shipping possible. All generators are shipped as fast as possible out of several US locations to ensure the fastest delivery. |
|
Why Buy From Us
|
We Put Our Customers First We have done the research for you to find the best manufacturers with the best warranties. Every unit on our site is covered by a high quality manufacturers warranty. |
|
|
We offer the absolute lowest price we can offer |
|
|
We insist that you love our service. If you're unhappy for any reason whatsoever, just let us know and we'll bend over backwards to make things right again. |
|
|
Ordering from AllProGenerators.com is 100% safe and secure so you can rest easy. Your personal details are never shared, sold or rented to anyone either. |
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