OUPES

OUPES Mega 5 Portable Power Station 5040Wh LiFePO4 Battery Backup with 4000W Output 7000W Surge Expandable to 45

683+ bought in the past month

$1799.00$2299.00

About this item

  • MASSIVE 5040WH CAPACITY - Power essential home appliances during extended outages; refrigerator runs 40+ hours, CPAP machine 35+ nights on a single charge.
  • UNLIMITED POWER EXPANSION - Connect up to 8 additional B5 Extra Batteries (sold separately) for a colossal 45.36kWh capacity - enough to power critical home circuits for days.
  • 4000W TOTAL OUTPUT WITH 7000W SURGE - Run heavy-duty appliances simultaneously with 5 AC outlets including specialized NEMA TT-30R for RVs and high-power equipment.
  • LIGHTNING-FAST RECHARGING - 0% to 80% in just 1.5 hours with combined AC and solar input (3900W max) - back to full power before the next storm hits.
  • SEAMLESS UPS PROTECTION - <20ms transfer time keeps computers, medical devices and sensitive electronics running without interruption during power fluctuations.
  • FULL HOME SOLAR INTEGRATION - 2100W solar input capacity (18-140V) harnesses free renewable energy; compatible with most residential solar panel setups.
  • COMPLETE DEVICE COMPATIBILITY - 12 versatile outputs including USB-C PD (60W), USB-A QC3.0, 12V carport, Anderson connector and DC5521 ports for every essential device.
  • INTELLIGENT POWER MANAGEMENT - Monitor and control your system remotely via smartphone app; track energy consumption, set schedules, and receive low-battery alerts.
  • PREMIUM LIFETIME VALUE - Military-grade LiFePO4 battery chemistry delivers 3500+ life cycles (80% capacity retention) backed by comprehensive 5-year warranty.
  • EMERGENCY-READY DESIGN - Built-in handle and reinforced chassis (110 lbs) with silent operation (<50dB) provides reliable power anywhere needed during disasters.
$1799.00
Was $2299.00Save $500.00

In Stock

DeliveryFriday 10 Apr – 16 Apr · Order within 6h 54m
Easy Returns · 30-day window
This order is a gift

In Stock

Secure Checkout
Free Returns
30-Day Guarantee
Secure checkoutAll transactions are SSL-encrypted. Your payment info is never stored.
Free returnsReturn or replace within 30 days
Fast deliveryOrders ship within 1 business day and arrive in 4–8 days.
Buyer protectionIf your order arrives damaged or doesn't show up, we'll make it right.
24/7 supportOur team is here to help. Reach us anytime by email or chat.
Ships fromOur Warehouse
Sold byOUPES-US
Returns
Easy Returns30-day return window
PaymentsSecure transaction

Product details

BrandOUPES
Wattage5040 Watt-hours
Fuel TypeElectric
Power SourceBattery Powered
Recommended Uses For ProductHome Emergency Power Outages, Off-Grid Living, RV
Item Weight110 Pounds
Voltage120 Volts (AC)
Output Wattage4000
Special Feature4000W total output, Charge 0 to 80% in 1.5hrs (AC+Solar), Expands to 45kWh
Included Components1x AC Charging Cable, 1x Anderson to 7909 Charging Cable, 1x Anderson to Car Charging Cable, 1x Anderson to MC4 Cable, 1x Mega 5 Power Station See more

Technical specifications

brandOUPES
wattage5040 Watt-hours
fuel_typeElectric
power_sourceBattery Powered
recommended_uses_for_productHome Emergency Power Outages, Off-Grid Living, RV
item_weight110 pounds
voltage120 Volts (AC)
output_wattage4000
special_feature4000W total output, Charge 0 to 80% in 1.5hrs (AC+Solar), Expands to 45kWh
included_components1x AC Charging Cable, 1x Anderson to 7909 Charging Cable, 1x Anderson to Car Charging Cable, 1x Anderson to MC4 Cable, 1x Mega 5 Power Station
colorBlack
product_dimensions25.2"L x 11.9"W x 17.2"H
materialABS
model_nameS5
engine_typeInverter
total_power_outlets5
starting_wattage7000 Watts
running_wattage4000 Watts
manufacturerSHENZHEN WEI PENG SHIJI TECHNOLOGY CO., LTD
part_numberS5
item_model_numberS5
sizeMega 5
styleMega 5
finishPlastic
sound_level58 Decibels
type_of_bulbLED
handlelever_placementCenter
special_features4000W total output, Charge 0 to 80% in 1.5hrs (AC+Solar), Expands to 45kWh
batteries_includedNo
batteries_requiredNo
warranty_description5-Year Warranty
best_sellers_rank#216,579 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #674 in Outdoor Generators
date_first_availableSeptember 29, 2024

From the brand

Product detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detail

Product videos

Product video 1

Customer reviews

4.88 ratings
★★★★★

Big power, small price

Baron Von ENIACJuly 25, 2025

This unit is a beast. Been using it daily for almost six months now to power two window AC units. Read more

★★★★★

Incredible Customer Support

RmitchOctober 15, 2024

I reached out to their customer support soon after purchase (nothing wrong with the unit itself), and was very pleased with their responsiveness, and the outcome. I know now why they have so many positive reviews. The mega 5 seems very well built, and has worked great in my testing so far. Its great peace of mind knowing it’s there if needed. Read more

★★★★☆

Encontrar partes de repuesto

Luis-AliNovember 3, 2025

Al mío se le dañaron algunas partes electrónicas y quisiera saber donde las puedo encontrar Read more

★★★★★

Great Performance at a Great Price!!

DaddyONovember 29, 2025

I ordered my Mega 5 in July 2025. I've used it for a bit now, I'm very happy with my purchase. With the help of Ms Vania at Oupes I chose the Mega 5 and got a great deal on it. It will become my home backup power source. I chose this 'SoGen' after sooo much research of not only Oupes but also Jackery, EcoFlow, Bluetti, Anker, Pecron and Dabbsson. I believe Oupes builds quality products at very competitive pricing. It also appears to me that they listen to their customers wants & wishes, that's refreshing. In addition they have a "give back" program, if I understand it correctly, to benefit those who maybe can't afford backup power, that's awesome! Vania, while I was down awhile, kept in touch, patiently working with me for over a year. If you have a question about an Oupes product, contact her, she has excellent product knowledge. You'll find out quickly, when you have an issue, they provide fantastic Customer Service. Remember to follow the charge/discharge instructions when you first get your SoGen. Also, don't forget to register the unit as it adds another year to your warranty! I chose the Mega 5 over the Mega 3 simply because I wanted the extra battery capacity. As I'm a bit older (71), I won't be moving 100+ lbs anywhere. In the 4 months I've had it I've maneuvering my Oupes units around my 5th wheel remodel. The extension handle is sturdy, a big help. The Mega 5 isn't ready for it's final resting place, ironically, the finished remodel will probably be mine :) I'll try to update as work progresses, showing my electrician's handywork. I plan on using a 3-way ATS for the Grid, Mega 5 SoGen, and a dual fuel generator for sources of power. I love the five well spaced (other mfgs should take note) 120V plugs, TT-30 outlet, 12V cigar lighter and a 30A Anderson Power Pole. My Mega 5 also has 1 USB-A, 3 USB-A QC and 2 USB-C PDs (huh? I was hoping for the new 140W USB-Cs), and a couple of barrel plug 12V outlets, all on the face of the unit. Make sure you turn off the AC outlets if not in use as the inverter draws a certain amount of power. That 4000W inverter is plenty for my little home. I will be adding a battery bank for extra power storage. The Oupes Mega 5 is scalable to 45kWh, that's huge! Charging can come from solar, grid, EV, or generator (individual or combo) for a max 3900W. Finally, I rather enjoy telling people I have an EV charging port-who cares if it's practical-I've got an EV charger (kinda)!!! Where I live we have natural disasters like floods, 60+ mph winds, and forest fires. If that isn't enough, we contend with the California Electrical Grid, yikes. Are you ready?? Read more

★★★★★

Oupes Mega 5 solar generator works VERY well

TBSeptember 13, 2025

My Oupes, Mega 5 solar generator exceeded my expectations. It is easy to use; set up time is 20 minutes once you know what you are doing. Oupes Customer Service is been VERY efficient. A very useful extra is that when you have ONE item (say a freezer or electric heater) plugged into the generator, you can see the second-by-second power draw. This helps you to know which devices use the most power. I am glad I purchased a Oupes unit. Read more

★★★★★

Uninterrupted home power

Eric BretschneiderSeptember 12, 2025

I bought my first unit to power my workshop in my basement. It was cheaper than having an electrician install new circuits and I can easily take my tools outside on nice days to work. It worked so well, I bought a second unit to power all my office/computer equipment. The units are quiet and store more than enough power to last for hours! Read more

★★★★☆

Equipo

Wapanega15January 17, 2025

Llegó en buen estado el equipo Read more

Recently Viewed