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OUPES | Mega 5 Power Station | Free Chargers Included | 4000W / 5040Wh

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OUPES | Mega 5 Home Backup & Portable Power Station | 4000W 5040Wh


*You can expand the OUPES Mega 5 by adding a B5 Expansion Battery


*Free AC and solar charging cables + 3 year warranty included!


Product Features

• 5040Wh Capacity | 4000W AC Pure Sine Wave Inverter (7000W Surge)
• LiFePO4 Battery with 3,500+ Life Cycles to 80%
• Expandable Up to 10.08kWh with B5
• 16 Outputs For Multiple Devices
• 6 Ways to Recharge (AC/Solar/Car/AC+Solar/Generator/EV charger)
• Smart HD LCD display
• Fastest Charging Speed: Fully charge in 1.5 hours
• 3900W Max. Input charging speed
• Anderson Recharging Input
• Seamless UPS Backup (2200W Max)
• Smart Control & Monitor in OUPES App


OUPES Mega 5 Home Backup & Portable Power Station Product Features

Double the Power Capacity

The OUPES Mega 5 Power Station by itself is 5kWh, but supports capacity expansion up to 10.08kWh by connecting an expansion battery to it. With the OUPES Mega 5, you're covered for any situation from tailgate power to extreme blackouts that last for days.


OUPES | Mega 5 Home Backup & Portable Power Station | 4000W 5040Wh


Run Your Home Appliances with 4000W of Ultra Power

With a 4000W powerhouse inverter, the Mega 5 can support almost any appliance running at full power, from off-grid essentials like microwaves and refrigerators to professional tools like power drills and high-output lights.


OUPES | Mega 5 Home Backup & Portable Power Station | 4000W 5040Wh


Plug and Play Home Backup Power System

Featuring up to 16 output ports for every one of your needs. Simply plug in what you want to charge and with the tap of a button, massive power awaits you. The color LCD screen conveniently displays the status of the unit, the power remaining, wattage draw, port status, and much more.


OUPES Mega 5 Ports Diagram Graphic


Stable LiFePO4 Battery - Lasts for 10 Years

The OUPES Mega 5 uses an EV-grade LiFePO4 battery, which can be used for 3500+ cycles at 80% depth of discharge. That's a full cycle, every day - for 10 years straight.


Multi-Channel Charging Tech

The Mega 5 is capable of charging at a rapid speed of up to 3900W. It even includes an EV charging port for your EV! 


OUPES Mega 5 Charging Options Graphic


Monitor and Control - Power in Your Hands

No need to go look at the unit's LED screen - you can easily operate the Mega 5 from your mobile phone conveniently. In the OUPES App, you can view and control your power station's status, such as real-time input & output, port status, extended battery status, and more.


Fast Charging Speed - Fully Charge in as Little as 1.3 Hours

Multi-functional charging tech gives you many different ways to charge - even using more than one method at the same time for an even quicker recharge.


OUPES Mega 5 Recharging Times


Embrace the Quiet

Minimal noise output makes the Mega 5 perfect for indoor use, unlike the loud chatter caused by any gas generator.


OUPES | Mega 5 Home Backup & Portable Power Station | 4000W 5040Wh



OUPES Mega 5 Spec Sheet



How do I maintain it when it's not in use for a long time?

1. Maintain the battery at a charge level between 60% and 80% of its rated capacity. It is recommended to check and recharge the battery every 3 months to keep it within this range.

2. Store the battery in a dry and cool environment with a temperature range of 0 ℃ to 40 ℃ (32 ℉ to 104 ℉).

3. Ensure the storage area has a humidity level between 0% and 60%.

4. Avoid exposing the battery to corrosive substances, as they can damage the battery's integrity and performance.

5. Keep the battery away from fire hazards and heat sources to prevent potential damage or overheating.

By adhering to these guidelines, you can help preserve the battery's condition and extend its overall lifespan during extended periods of inactivity.


What type of battery does OUPES use?

All OUPES units use a LiFePO4 battery - LiFePO4 batteries are eco-friendly and more stable.


Do all OUPES Portable Power Stations come with a pure-sine wave inverter?

Yes, all OUPES portable power stations use pure-sine wave inverters contained within the power station itself.


What's Included?

Included In the Box:

• 1x OUPES Mega 5 Portable Power Station
• 1x AC Charging Cable
• 1x Anderson to Anderson Cable
• 1x 7909 to Anderson Charging Cable
• 1x Car to Anderson Charging Cable
• 1x MC4 to Anderson Charging Cable
• 1x User Manual
• 1x 3-Year Warranty Card


OUPES Mega 5 Power Station and Included Charging Accessories


 OUPES Warranty & Returns

Limited Warranty
With OUPES, you can be sure of consistent, world-class outdoor power station that meet the highest global quality and safety, delivered in spec and on time. In the event that you are not satisfied with your purchase, simply return it within 30 days from the date of delivery. Please keep in mind that all returns must be unused, unwashed and undamaged and all packaging, labels and tags must remain intact and be attached with the item. Promotional items, flash sales, clearance items and any items marked as "final sale" are not eligible for partial refunds, exchanges, or returns. All sales are final.

Warranty Period 
The warranty period for OUPES products is 24 months. In each case, the warranty period is measured starting on the date of purchase by the original consumer purchaser. The sales receipt from the first consumer purchase, or other reasonable documentary proof, is required in order to establish the start date of the warranty period.


OUPES will replace (at OUPES's expense) any OUPES product that fails to operate during the applicable warranty period due to defect in workmanship or material. A replacement product assumes the remaining warranty of the original product.

Limited to Original Consumer Buyer
The warranty on OUPES's product is limited to the original consumer purchaser and is not transferable to any subsequent owner.


Return & Refund Conditions

Please carefully read conditions below. If conditions are not met, OUPES reserves the right to refuse the exchange or refund. Please note that OUPES does not permit the return of or offer refunds for the following products:

Product that is custom configured or branded to your specifications.
Product purchased from a 3rd party retail partner.


Product returns

We recognize that sometimes an item may not meet your needs or simply does not fit with your décor. If you are unsatisfied for any reason with your purchase, you can initiate a return or exchange up to 30 days from the date of delivery. For all eligible returns, item(s) must be unused and undamaged and labels and tags must remain intact and returned in their original packaging. Otherwise, the item may not be eligible for return. In the event of receiving an item which does not conform to those standards, please email us at Please retain the original package for returns, otherwise we reserve the right to reasonably refuse any return.


Non-quality Returns:

If you paid and decided that you do not want the item, or you purchased the item in error, the amount charged for shipping will not be refunded. If you paid a shipping charge and the item is defective or we made an error of some kind, the amount charged for shipping will be in the request a return label. If you insist on returning the item, feel free to contact us via email to state your return reason and request a return label. Our customer care support will inform you of the shipping cost. Please note that returned products be in original condition for them to be eligible for return and resale. The product should be unused, unwashed and undamaged and all packaging, labels and tags must remain intact and be attached with the item. If these are not available, the product will not be eligible for return. Once the returned product has been received by us and if the item(s) are as per our return policy, we will then process your refund. Please note the refund takes about 3 business days to be processed and returned to your account.
You can also choose a self-selecting logistics company to return the item, and the shipping expenses shall be borne by yourself. When you need the refund to be issued, please send us an email indicating the order details and return tracking number to expedite the refund process.


Quality or other factors related returns:

If there is any quality issue with the item, please feel free to contact us, we will exert great effort to cope with the issue according to the status of the item with partial refund, full refund, return for replacement.


Sent wrong item:

1.You can choose to keep the wrong item with a discounted price offered by our customer care team. In the meanwhile, you can request us to send you the correct item that you have ordered. In this situation, you have to only pay for the wrong item at a favorable price.
2.You can request a return label to send back the wrong item for the correct replacement or a full refund. After you have delivered the item to UPS, you can contact us for the replacement or the full refund if the return tracking number shows any further status of the shipment.


Item damaged during shipping:

Upon the receipt of the item, if you find the item is damaged or manufacturing defect, please reject the delivery and kindly get in touch with us immediately. We will request you to kindly email us the photographs of the defective product and appropriate action will be taken by our customer care support thereafter.

Damages found after you have received the item, please contact us with pictures of the damaged item, we will either send you return labels to return the damaged item back for a replacement or a full refund or directly send you a new one or a full refund depending on the damage status of the item and your will.


Package Lost: 

After you have received the tracking number, still you haven't got the item by the expected delivery date. You may look around, check it with your neighbors, and contact the shipping company. After which, the package still does not show itself up. Contacting us with your phone number, we would set up a lost package claim against the shipping company to have your matter taken care of. It will take a week or so to get the investigation result from the shipping company. Please wait patiently during the period, and we would take a relevant measure to have it settled.


Order Cancellation:

1. Order cancellation before shipment: You could contact us via emails to have the order cancelled timely. Indicating the order details, such as the order number, receiver's name, and other key information, it will help us to locate your order immediately and cancel it in a prompt manner to avoid unnecessary troubles. You have 24 hours to decide whether to cancel it or not without any additional charge after the order is placed. Once you get a cancellation confirmation from our customer care team, the full refund will be issued to you in two business days.

2. Order cancellation after shipment: Items will be sent out the second day after the order is placed. Cancellation after shipment will be liable to the recall cost charged by UPS, which is $17.6. If you are aware of the charge and still want to have the order cancelled, you can contact us, and we would help you stop the delivery. After the item is being returned by UPS, you can request a refund from us. This policy is only applied to UPS ground delivery service. Items delivered by UPS SurePost, USPS or truck do not allow to be intercepted. If you want to cancel the latter ones, you must reject the packages when the shipping companies are trying to make the delivery and shipping cost will be applied in this case.

3. We have the right to cancel an order due to items being oversold or for any reason of our choosing. If we choose to cancel an order you will be notified immediately and issued a full refund.



OUPES's warranty does not apply to:

  • Misused, abused, modified, damaged by accident, or used for anything other than normal consumer use as authorized in OUPES's current product literature.
  • Attempted repair by anyone other than an authorized facility
  • Any product purchased through an online auction house.

To obtain warranty service, contact our customer service team at


Late or missing refunds

If you haven't received a refund yet, first check your bank account again. If payment was made by credit card, once we receive the product we will credit your account. Please allow 7-10 business days for a credit to appear on your credit card statement.
Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you've done all of this and you still have not received your refund, please contact us at