DELTA Gen4 Series
Get DELTA Gen4 Launch Perks
Benefit 1: Subscribe & Save 5% Off
During the Early Bird Period, you can subscribe to updates on the EcoFlow DELTA Gen4 Series by entering your email address on an EcoFlow DELTA Gen4 Series product pages or the New Release Collection page on the EcoFlow online Store (https://us.ecoflow.com/), or on the EcoFlow DELTA Gen4 Series pages of the EcoFlow official website(https://www.ecoflow.com/us).
We’ll send you a welcome email with a 5% off discount code that can be used on eligible EcoFlow DELTA Gen4 Series purchases from November 4 through December 7, 2026. This discount cannot be combined with other promotions.
By subscribing, you’ll also receive the latest news and offers. You may unsubscribe from marketing emails at any time by following the unsubscribe instructions included in each email.
Benefit 2: Free Gift Offer
Customers who place a qualifying order for an EcoFlow DELTA 3000 Gen4 or EcoFlow DELTA 3800 Gen4 from November 4 through December 7, 2026, will receive one free EcoFlow DELTA Series Folding Transport Cart (referred to as the “Trolley”) (retail value: USD $99) on a first-come, first-served basis. A total of 500 Trolleys are available. The offer will end automatically once all 500 Trolleys have been claimed, even if the Promotion Period has not yet ended. The free gift is available only for orders placed through the EcoFlow online store at us.ecoflow.com. The Trolley will ship together with the qualifying product once the product is available.
One trolley is available per qualifying order. The offer is limited to the first 500 qualifying orders and is subject to trolley availability.
Eligibility for the promotional gift is non-transferable. The promotional gift is non-exchangeable, and non-upgradable, and cannot be substituted for cash, store credit, or any other product under any circumstances.
Refunds will be processed in accordance with EcoFlow’s standard return and refund policy. For eligible orders that include a promotional gift, the gift must be returned in its original condition when the eligible product is returned. If the gift is not returned or is returned damaged, its retail value will be deducted from the refund amount. Refunds will be issued based on the actual amount paid for the returned product.
Benefit 3: 60-Day Price Match Guarantee
Enjoy Early Bird Pricing from Nov. 4–Dec. 7, 2026. Plus, orders placed on us.ecoflow.com during the Early Bird Period are eligible for a 60-Day Price Match Guarantee.
If a lower price is advertised on us.ecoflow.com within 60 days of the original order date, excluding flash sale prices and member-only prices, customers may contact support@ecoflow.com to request a price adjustment. The request must be submitted within 60 days of the original order date and while the lower price is publicly available on us.ecoflow.com.
This Price Match Guarantee applies only to purchases made on us.ecoflow.com. The lower price must apply to the same product, SKU, and condition as the product originally purchased and must be advertised on us.ecoflow.com.
This Price Match Guarantee does not apply to prices offered by marketplace resellers or third-party retailers, financing offers, coupons, gift card offers, bundles, free items, customizable configurations, specialty products, pricing errors, service or installation offers, limited-quantity offers, out-of-stock items, Deal of the Day offers, flash sales, closeouts, discontinued items, clearance items, final sale items, or paid membership club offers.
Benefit 4: Up to 12 Months Interest-Free Financing
From Nov 4 to Dec 31, 2026 PST, eligible EcoFlow DELTA Gen4 Series orders qualify for up to 12 months at 0% APR through available financing providers.
Financing approval and eligibility are subject to the applicable financing provider’s credit review, terms, and conditions. Not all customers will qualify for 0% APR financing or a 12-month term.
Payment options through Affirm are provided by the lending partners listed at affirm.com/lenders. See affirm.com/terms for applicable terms.
Payment options through Klarna are provided by Klarna Inc., located at 800 N. High St., Suite 04121, Columbus, OH 43215 (“Klarna Columbus”), and its applicable lending partners. See Terms of Use | Klarna US for applicable terms.
Benefit 5: Up to 5-Year Warranty
Includes a 3-year standard warranty plus a 2-year extended warranty with EcoFlow App registration.
6 Reasons to Choose DELTA 3800 Gen4
70+ Hours. The Longest Runtime in Its Class¹
Industry-First³ Fridge Runtime Boost™ Mode. Helps Protect $200+ in Food Per Outage¹¹
Turn it on using the unit or the EcoFlow app to extend refrigerator runtime through on-demand power matching and smart power consumption management.
Lowest 3W Standby Power. Leave It On for 52 Days,
Worry-Free.
With just 3W standby and 14W no-load power consumption, DELTA 3800 Gen4 reduces energy loss when left on between uses, delivering longer runtime for low-power essentials.²
Retains Up to 99% of Its Charge After One Year in Storage14
Automotive-grade LFP cells and smart power management minimize energy loss during storage, helping preserve battery charge and reduce the need for frequent recharging.
Power 99% of Home Appliances.16
3600W Output, 7200W Surge⁴
Power multiple household appliances at once without constantly checking which devices can run together.
Smallest and Lightest5. Portable Enough for Everyday Life.
Ready Faster. Charge Anywhere.
Recharge flexibly with 6 charging methods.7
Smarter Protection for More Reliable Backup
Industry-Leading Protection at Every Level17
![6,000 Cycles. 15+ Years of Reliable Power [8]](http://us.ecoflow.com/cdn/shop/files/D438_10_02_m.webp?v=1792574728&width=1200)
![6,000 Cycles. 15+ Years of Reliable Power [8]](http://us.ecoflow.com/cdn/shop/files/D438_10_02_m.webp?v=1792574728&width=750)
![50+ Built-In Protections, 24/7[19]](http://us.ecoflow.com/cdn/shop/files/D438_10_02_PC.webp?v=1792487145&width=1200)
![50+ Built-In Protections, 24/7[19]](http://us.ecoflow.com/cdn/shop/files/D438_10_03_m.webp?v=1792574801&width=750)
![Up to 5-Year Warranty Support[21]](http://us.ecoflow.com/cdn/shop/files/D438_10_03_PC.webp?v=1793524779&width=1200)
![Up to 5-Year Warranty Support[21]](http://us.ecoflow.com/cdn/shop/files/D438_10_04_m.webp?v=1793524795&width=750)
![6,000 Cycles. 15+ Years of Reliable Power [8]](http://us.ecoflow.com/cdn/shop/files/D438_10_02_m.webp?v=1792574728&width=800)
6,000 Cycles. 15+ Years of Reliable Power 8
![50+ Built-In Protections, 24/7[19]](http://us.ecoflow.com/cdn/shop/files/D438_10_02_PC.webp?v=1792487145&width=800)
50+ Built-In Protections, 24/719
Advanced Thermal Protection
![Up to 5-Year Warranty Support[21]](http://us.ecoflow.com/cdn/shop/files/D438_10_03_PC.webp?v=1793524779&width=800)
Up to 5-Year Warranty Support21
Smarter Energy Control in One App
Prepare for storms, keep your phone charged at a displayed 0%, and track backup status and savings—all in one place.
Using U.S. National Weather Service data, Storm Guard Mode 2.0 helps prepare and recharge your power station before severe weather arrives.22
Track real-time energy input, output, backup status, and estimated savings at a glance.25
EcoFlow Ecosystem Compatibility26
Pair DELTA 3800 Gen4 with EcoFlow ecosystem products to build the setup that fits your needs. Compatible with more products beyond those shown.
What's in the box
Tech Specs
Dimensions
Without Handles: 426 × 288.5 × 307 mm / 16.77 × 11.36 × 12.09 in
With Handles: 476.55 × 288.5 × 307 mm / 18.76 × 11.36 × 12.09 in
Net Weight
67.5 lb (30.6 kg)
Warranty
3 years + 2-year extended warranty with registration in the EcoFlow app
Battery Chemistry
LFP (LiFePO₄)
Capacity (per unit)
3,763Wh
Rated Output Voltage & Frequency
120V AC, 60Hz
Rated Output Power
3,600W (7,200W surge)
AC Outlets
5 total — 4 × 20A max., 1 × 30A max.
USB-A Output
1 port, 36W max.
USB-C Output
2 × 65W max., 1 × 140W max.
USB Shared Output
The 65W USB-C ports share circuitry with USB-A; simultaneous output on the shared circuit is limited to 16W total
UPS Switchover
<10 ms
Max. PV Input
2,000W total, 2 ports (11–60V DC, 20A max., 1,000W each)
AC Input
100–120V AC, 15A, 50/60Hz
Connectivity
Wi-Fi & Bluetooth
Charging Temperature
32°F–113°F / 0°C–45°C
Discharging Temperature
14°F–113°F / -10°C–45°C
Operating Altitude
≤9,843 ft (3,000 m)
IP Rating
IP20
FAQ
1. Reduced weight but unchanged capacity
DELTA 3000 Gen4 weighs about 26 kg (low-voltage version: 26 kg; high-voltage version: 25.6 kg), about 20% lighter than DELTA 3 Ultra
DELTA 3800 Gen4 has a capacity increased to 3763 Wh and weighs only about 30.6 kg (low-voltage version: 30.6 kg; high-voltage version: 30.1 kg), about 15 kg lighter than Delta Pro (about 45 kg)
2. Increased PV input power
Delta 3 Ultra: 800W per channel
Delta 3 Ultra Plus: 800W per channel for two channels, totaling 1600W
DELTA 3000 Gen4: 1000W per channel
DELTA 3800 Gen4: 1000W per channel for two channels, totaling 2000W
3. Optimized mobility
If you have frequent mobility needs, you can separately purchase the EcoFlow DELTA Series Folding Transport Cart for convenient carrying.
X-Stream:
1. US/CA: 1,800W, 15A
2. EU/UK/AU/ZA: 2,400W, 10A.
Refer to the user manual for X-Boost power in each region.
Note: X-Boost is not available when the device is connected to AC input (e.g. when the power supply is charging or in bypass mode).
Bypass mode: The device automatically enables bypass mode when charging and discharging simultaneously (via AC input and output ports).
Suggested placement:
Delta 3 Max Plus Extra Battery: Can be stacked directly on top of the main unit
Delta Pro 3 Extra Battery: It is recommended to stack the two extra batteries and place them next to the main unit
Safety reminder: When stacking, please ensure the bottom bearing surface is flat and stable, reserve sufficient heat dissipation space, and avoid blocking the equipment's ventilation vents.
Do not connect multiple cooling appliances or use them alongside other AC appliances, as this may affect power supply stability.
Low-power operation (≤600W): ≤30 dB
Medium-power operation (≤1800W): ≤40 dB
Full-power operation (≤3600W): ≤50 dB
30 decibels (dB) is approximately the volume of a soft conversation, or the ambient volume in a quiet library or office; a sound level of 30 decibels is generally considered a comfortable background noise level.
[1] "70+ Hours. The Longest Runtime in Its Class" claim is based on EcoFlow internal testing and a review of selected comparable 3.5–4kWh portable power stations available in the target market as of August 14, 2026 under comparable refrigerator test conditions. Testing was conducted with a Samsung 654L AI refrigerator (model RS62DG50H8CWSC) under no-load conditions, with the refrigerator and freezer temperatures set to 3°C and −18°C, respectively. Actual runtime varies by refrigerator model, food load, ambient temperature, door openings, settings, and usage conditions.
[2] The 3W standby power consumption and 14W no-load power consumption figures are based on EcoFlow internal testing under specified conditions. The standby time of 52 days and 6 hours is based on theoretical calculations. Actual power consumption and standby time may vary depending on settings, connected loads, firmware, battery level, and operating environment.
[3] Based on EcoFlow internal review of comparable portable power stations available in the target market and their publicly available product features as of August 14, 2026.
[4] Performance at 3600W rated output and 7200W surge output is based on EcoFlow internal testing under specified conditions. Actual performance may vary depending on connected loads, ambient temperature, battery health and state of charge, and input voltage conditions.
[5] The "smallest and lightest," "41% smaller," and "22% lighter" claims are based on EcoFlow internal testing and comparisons with selected comparable 3.5–4kWh portable power stations available in the target market as of August 14, 2026. Product volume is calculated without handles unless stated otherwise. Actual weight may vary by up to ±0.5 kg. Product volume may vary slightly depending on the measurement method.
[6] Charging data is based on EcoFlow internal testing under specified conditions, with results compared against EcoFlow DELTA Pro under comparable charging conditions. Actual charging time varies depending on input source, product settings, battery level, ambient temperature, and operating environment.
[7] EcoFlow DELTA 3800 Gen4 supports six charging methods. Availability varies by model, accessories, region, grid conditions, vehicle compatibility, solar conditions, and product configuration. Certain charging methods require compatible accessories, which may be sold separately and are not included with the product.
[8] Based on laboratory testing under specified charge and discharge conditions, the battery cell retains 70% of its initial capacity after 6,000 cycles. The theoretical service life of over 15 years is calculated assuming one charge cycle per day. Actual results may vary depending on usage and operating conditions.
[9] UPS <10 ms is based on internal testing. This product does not support 0 ms professional UPS applications and is not intended to be used as the sole backup power source for life-support medical equipment or other systems that require an uninterrupted power supply. Please verify equipment compatibility before use.
[10] Promotional savings, offer value, eligibility, availability, and campaign terms are subject to the final campaign terms and conditions.
[11] Estimated food value is based on household food-at-home spending and internal assumptions regarding refrigerator/freezer food inventory and the share of perishable food. Actual food value protected varies by refrigerator model, food load, ambient temperature, door openings, household food inventory, and outage duration. EcoFlow is not responsible for food spoilage or secondary losses resulting from power outages or improper device operation.
[12] Runtime data is based on EcoFlow internal testing with a Samsung 654L AI refrigerator (model RS62DG50H8CWSC) under no-load conditions, with the refrigerator and freezer temperatures set to 3°C and −18°C, respectively. Actual runtime varies by refrigerator model, food load, ambient temperature, door openings, settings, and usage conditions.
[13] The industry average is based on EcoFlow internal testing of selected comparable 3–4kWh portable power stations under comparable refrigerator test conditions. Actual runtime varies by product, appliance, usage, and operating conditions.
[14] Calculated based on EcoFlow internal estimates of device hardware standby power consumption and cell self-discharge under standard ambient conditions. Actual battery retention may vary by storage temperature, battery age, storage duration, product condition, and usage conditions. Actual results may vary.
[15] Calculator results are estimates only and may vary by appliance model, rated power, startup power, usage settings, battery condition, ambient temperature, and operating conditions.
[16] “Power 99% of Home Appliances” is based on EcoFlow internal review of rated power requirements for selected common household appliances. Actual appliance support depends on appliance rated power, startup power, usage conditions, and whether multiple loads are used at the same time.
[17] The industry-leading protection claim is based on EcoFlow internal review of selected comparable portable power stations available in the U.S. and their publicly available safety, monitoring, and protection features as of August 14, 2026.
[18] This refers to EcoFlow's internal testing process, which includes cell-level tests and whole-unit safety tests. The 120+ tests figure is based on EcoFlow laboratory data and is for reference only.
[19] The 50+ BMS protection claim is based on EcoFlow internal product specifications. Protection availability and performance may vary by operating conditions, firmware version, battery status, load, and product settings.
[20] Thermal runaway protection claims are based on EcoFlow internal product specifications and applicable UL 9540A cell thermal runaway testing. Actual safety performance may vary by use environment, product condition, installation, and operating conditions.
[21] Warranty coverage includes a 3-year basic warranty. An additional 2-year warranty extension is available upon product registration through the app or official website.
[22] Compared with the previous generation, Storm Guard Mode 2.0 integrates U.S. National Weather Service data to provide more accurate severe-weather forecasts, helping the system prepare and recharge automatically before storms for more reliable backup readiness.
[23] The industry-first Emergency Power Mode™ claim is based on EcoFlow's internal review of comparable portable power stations available in the U.S. and their publicly available product features as of August 14, 2026.
[24] Emergency Power Mode™ performance is based on EcoFlow internal testing under specified conditions. Actual charging results vary by phone model, battery health, cable, ambient temperature, product settings, and device usage during charging.
[25] Weather alerts, Storm Guard availability, automatic charging, and supported weather data sources vary by region, software version, network connection, and user settings. Weather information is provided by third-party weather data services. EcoFlow does not warrant or guarantee the completeness or accuracy of third-party weather data. Automatic charging and alerts may fail or be delayed due to network outages, service interruptions, incorrect settings, or unexpected weather changes. EcoFlow is not liable for power loss, property damage, spoiled goods, or other losses resulting from failed, delayed, or inaccurate alerts. Dashboard data and savings estimates are for reference only and may vary by device setup, electricity rates, usage patterns, and software version.
[26]Accessory compatibility, feature availability, and bundle configurations vary by model, region, firmware, accessory version, and product setup. Check compatibility before purchase.
[27] All product images, specifications, and performance data shown are for illustrative purposes only. Actual product performance may vary due to environmental conditions, software versions, and usage practices.
EcoFlow DELTA Gen4 Series Promotion Terms & Conditions
Promotion Period
The Early Bird Period of the EcoFlow DELTA Gen4 Series Promotion (hereinafter referred to as the “Promotion”) is available exclusively from 12:00 AM PST on November 4, 2026, until 11:59 PM PST on December 7, 2026.
Eligibility
This promotion is available to all U.S. residents with a valid shipping address in the continental U.S. who are 18 years of age or older at the start of the Promotion Period (hereinafter referred to as "Participants"). Offers are not valid in Guam, Alaska, Hawaii, Puerto Rico, or the U.S. Virgin Islands.
Promotion Benefits
A. Benefit 1: Subscribe & Save 5% Off
During the Early Bird Period, you can subscribe to updates on the EcoFlow DELTA Gen4 Series by entering your email address on an EcoFlow DELTA Gen4 Series product pages or the New Release Collection page on the EcoFlow online Store (https://us.ecoflow.com/) , or on the EcoFlow DELTA Gen4 Series pages of the EcoFlow official website(https://www.ecoflow.com/us).We’ll send you a welcome email with a 5% off discount code that can be used on eligible EcoFlow DELTA Gen4 Series purchases from November 4 through December 7, 2026. This discount cannot be combined with other promotions.By subscribing, you’ll also receive the latest news and offers. You may unsubscribe from marketing emails at any time by following the unsubscribe instructions included in each email.
B. Benefit 2: Free Gift Offer
Customers who place a qualifying order for an EcoFlow DELTA 3000 Gen4 or EcoFlow DELTA 3800 Gen4 from November 4 through December 7, 2026, will receive one free EcoFlow DELTA Series Folding Transport Cart (referred to as the “Trolley”) (retail value: USD $99) on a first-come, first-served basis. A total of 500 Trolleys are available. The offer will end automatically once all 500 Trolleys have been claimed, even if the Promotion Period has not yet ended. The free gift is available only for orders placed through the EcoFlow online store at us.ecoflow.com. The Trolley will ship together with the qualifying product once the product is available.
One trolley is available per qualifying order. The offer is limited to the first 500 qualifying orders and is subject to trolley availability.
Eligibility for the promotional gift is non-transferable. The promotional gift is non-exchangeable, and non-upgradable, and cannot be substituted for cash, store credit, or any other product under any circumstances.
Refunds will be processed in accordance with EcoFlow’s standard return and refund policy. For eligible orders that include a promotional gift, the gift must be returned in its original condition when the eligible product is returned. If the gift is not returned or is returned damaged, its retail value will be deducted from the refund amount. Refunds will be issued based on the actual amount paid for the returned product.
C. Benefit 3: 60-Day Price Match Guarantee
Enjoy Early Bird Pricing from Nov. 4–Dec. 7, 2026. Plus, orders placed on us.ecoflow.com during the Early Bird Period are eligible for a 60-Day Price Match Guarantee.
If a lower price is advertised on us.ecoflow.com within 60 days of the original order date, excluding flash sale prices and member-only prices, customers may contact support@ecoflow.com to request a price adjustment. The request must be submitted within 60 days of the original order date and while the lower price is publicly available on us.ecoflow.com.
This Price Match Guarantee applies only to purchases made on us.ecoflow.com. The lower price must apply to the same product, SKU, and condition as the product originally purchased and must be advertised on us.ecoflow.com.
This Price Match Guarantee does not apply to prices offered by marketplace resellers or third-party retailers, financing offers, coupons, gift card offers, bundles, free items, customizable configurations, specialty products, pricing errors, service or installation offers, limited-quantity offers, out-of-stock items, Deal of the Day offers, flash sales, closeouts, discontinued items, clearance items, final sale items, or paid membership club offers.
D. Benefit 4: Up to 12 Months of Interest-Free Financing
From Nov 4 to Dec 31, 2026 PST, eligible EcoFlow DELTA Gen4 Series orders qualify for up to 12 months at 0% APR through available financing providers.
• Financing approval and eligibility are subject to the applicable financing provider’s credit review, terms, and conditions. Not all customers will qualify for 0% APR financing or a 12-month term.
• Payment options through Affirm are provided by the lending partners listed at affirm.com/lenders. See affirm.com/terms for applicable terms.
• Payment options through Klarna are provided by Klarna Inc., located at 800 N. High St., Suite 04121, Columbus, OH 43215 (“Klarna Columbus”), and its applicable lending partners. See Terms of Use | Klarna US for applicable terms.
Shipping & Delivery
Orders containing new products will ship once the products arrive. Free gifts and other items included in bundles will ship together with the products.
General Terms
A. If you encounter any issues during the promotional period, please contact us at support@ecoflow.com for assistance.
B. Delivery service is unavailable for orders shipped to Guam, Alaska, Hawaii, Puerto Rico, or the U.S. Virgin Islands. Please refer to our shipping policy for more details.
C. EcoFlow reserves the right to modify or cancel the promotion only where reasonably necessary due to fraud, abuse, technical errors, supply limitations, operational issues, or circumstances beyond EcoFlow's reasonable control, as permitted by applicable law. We also reserve the right to exclude any customer from the promotion in cases of fraud or abuse.
D. Participants agree to be bound by these terms and understand that EcoFlow's decisions are final and binding to the extent permitted by applicable law. No correspondence or appeals regarding the promotion will be entertained, except as required by applicable law. EcoFlow reserves the right to make final interpretations regarding this promotion.
E. During the promotion, all orders must comply with EcoFlow's purchase agreement and return policy. This promotion is not available for wholesale or distributor orders.
F. Unauthorized or fraudulent activities will result in disqualification from the promotion.
G. Participants must comply with all applicable laws and regulations.
H. EcoFlow is not responsible for delays caused by reasons beyond its control, including, but not limited to, network transmission failures.
I. EcoFlow is not liable for any direct or indirect losses or damages incurred by either party (including participants) due to actions or negligence related to the promotion, except to the extent arising from EcoFlow's willful misconduct or fraud, or as otherwise prohibited by applicable law.
J. To the extent permitted by applicable law, participants agree to release EcoFlow from any claims, including those arising from breach of contract, tort, negligence, or other legal or equitable causes related to participation in the promotion, except to the extent arising from EcoFlow's willful misconduct or fraud, or as otherwise prohibited by applicable law.
K. There may be certain orders that we are either unable to accept or must cancel. We reserve the right, at our sole discretion, to refuse or cancel any order for any reason, as permitted by applicable law. We are not responsible for inaccuracies or errors, except as required by applicable law.
L. EcoFlow reserves the right to decide on any issues (including, but not limited to, eligibility determinations and rule interpretations) arising from or in connection with the promotion.
M. In the event of a price match request, EcoFlow's official pricing history and promotional records shall prevail in determining eligibility for price matching. Screenshots, browser displays, or any customer-provided materials are for reference only and shall not be considered conclusive evidence.
N. All matters relating to this promotion and these Terms & Conditions, and any dispute or claim arising therefrom or related thereto (in each case, including non-contractual disputes or claims), shall be governed by and construed in accordance with the internal laws of the State of California without giving effect to any choice or conflict of law provision or rule. You agree that any claim relating to this promotion will be brought in your individual capacity, and not as a plaintiff or class member in any purported class, collective, or representative action.
O. If any provision of these Terms is found to be invalid or unenforceable, the remaining provisions shall remain in full force and effect.
