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Eligible for Return, Refund or Replacement within 30 days of receipt
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt. You may receive a partial or no refund on used, damaged or materially different returns.
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Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt. You may receive a partial or no refund on used, damaged or materially different returns.
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OUPES B2 Smart Extra Battery for Mega 2, 2048Wh LiFePO4 Battery Backup, 0.6H to Full Charge, Battery Backup for Home Use, Blackout, Camping, RV

3.6 3.6 out of 5 stars 11 ratings
$1,024.00
promo code: OUPESSALE Shop items  applied at checkout Shop items  
B2 battery
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Purchase options and add-ons

Brand OUPES
Battery Cell Composition Lithium Polymer
Unit Count 1 Count
Voltage 110 Volts (AC)
Amperage 0.6 Amps

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Product Description

s2
s2

Whole-home backup kit: OUPES Mega 2, Pro/Tran 20

Transfer Switch kit, and NEMA TT-30P to L14-30R Cord.

Mega 2

More Choices about OUPES

2048Wh

Capacity

3072Wh

48.5 lbs

Weight

83.33 lbs

APP Control

3700W

Max. Input

3900W

0.6 hrs

Fast Charging Time

0.8 hrs

Extra Battery

2048Wh

Capacity

5040Wh

48.5 lbs

Weight

110.23 lbs

APP Control

3700W

Max. Input

3900W

0.6 hrs

Fast Charging Time

1.3 hrs

Extra Battery

2048Wh

Capacity

2232Wh

48.5 lbs

Weight

45.64 lbs

APP Control

3700W

Max. Input

500w

0.6 hrs

Fast Charging Time

4 hrs

Extra Battery

2048Wh

Capacity

1488Wh

48.5 lbs

Weight

33.07 lbs

APP Control

3700W

Max. Input

500w

0.6 hrs

Fast Charging Time

3.7 hrs

Extra Battery

Learn More
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When will Mega2 be available for purchase? Can discount codes be supported?

Mega2 will be officially released on November 20th. The price of Mega2 will be reduced by 10% from November 20th to December 4th. After December 4th, it will return to the original price for sale

How to choose the transfer switch?

The Transfer Switch installation must be performed by a qualified electrician under the guidance of the installation and operating instructions in compliance with all applicable electrical codes. Only viable with indoor circuit breaker panels.

How to know if OUPES Portable Power Station can charge my devices and how long does it support?

Please evaluate the devices that need to be charged. As long as the working voltage and power are within the working power of the power station, then it can be powered by the power station.

Can I use third party solar panel?

Most of the solar panels on the market are compatible, but it need to check whether the specifications and plug are matched.

Can I use a third party expanded battery?

No, the Mega 2 can't be expanded with third party battery. Please choose B2 expanded battery with it.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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OUPES

OUPES B2 Smart Extra Battery for Mega 2, 2048Wh LiFePO4 Battery Backup, 0.6H to Full Charge, Battery Backup for Home Use, Blackout, Camping, RV

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Important information

Wattage

2048 Watt-hours

Bulb Voltage

110 volts_of_alternating_current

Customer reviews

3.6 out of 5 stars
3.6 out of 5
11 global ratings

Top reviews from the United States

Lori G.
5.0 out of 5 stars Great product for the price
Reviewed in the United States on April 20, 2024
Style: mega 2Verified Purchase
This is an extremely useful product that is very price competitive. We use it to power our camper via the 30 AMP outlet. It's like having an RV park electrical pedestal with us at all times. Awesome!!
Helpful
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Joseph G
2.0 out of 5 stars Solar Performance is Terrible
Reviewed in the United States on April 7, 2024
Style: mega 2Verified Purchase
I will start by stating I like the overall functions of the unit. It performs well as a power station. You can watch numerous YouTube videos of the pros for this unit.
However, my primary use is for solar charging. This unit fails terribly. Oupes uses a low quality mppt charge controller. This results in bad solar performance. It takes 5 to 10 minutes to get to full charging rate. The second any clouds or changes in sun occur, the unit "resets" and begins to start the charge cycle from 0 watts. The 5 to 10 minute ramp up to full charging rate begins again. This continually occurs during the charge cycle. Therefore, solar charging is incredibly inefficient and does not capture all available sun light.
This unit will probably work well during full sun and cloudless days. Otherwise, look elsewhere for a unit that will primarily charge by solar.
7 people found this helpful
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Jonathan Teoh
5.0 out of 5 stars Great Camping / Occasional Home use
Reviewed in the United States on December 31, 2023
Style: mega 2+240wVerified Purchase
Got my Mega 2 just before Christmas and solar panel a few days later.
Have done a quick checking with solar panel and AC charging. It charge well with each of the two methods, the noise is low and the response is good. Both product seems to be well built and well thought out. MC4 to various adapters are provided and come in handy. Cable seems to be thick and good. Overall, my impression is good and glad that I decided on this brand. Mega 2 for me is a "multi-use generator" where I can use it for camping and at home as well. This is the main reason I choose Mega 2. If you are concern about the weight, you could use a light duty hand truck to carry it to your vehicle and just lift it. It is more liftable than Mega 3 for sure even though Mega 3 has wheels.
2 people found this helpful
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Abel G.
1.0 out of 5 stars Product doesn’t work
Reviewed in the United States on March 21, 2024
Style: mega 2+2*240wVerified Purchase
The mega 2 generator did not work at all had received the item and it would not charge or hold a charge and now the device does not turn on and it’s been almost a week now trying to correspond with the company to get a replacement definitely not worth the price
5 people found this helpful
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Anthony P.
5.0 out of 5 stars Very well built.
Reviewed in the United States on March 9, 2024
Style: mega 2Verified Purchase
Love it. I plugged my 60 watt, 54 quart freezer/fridge into it and it ran for 30 hours from 100% charge down to 20% and then recharged in the wall outlet on the low charge setting in 1 and 1/2 hours. That tells me I can plug it into my 600 watt solar aray and run it indefinitely.👍💯🎯
2 people found this helpful
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20rv17
2.0 out of 5 stars Controller
Reviewed in the United States on April 1, 2024
Style: mega 2Verified Purchase
When turned off will not turn back on by switch.
One person found this helpful
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anthonyc
5.0 out of 5 stars Charging in one Hour! Amazing! if in emergency outage could be a life/Food saver.
Reviewed in the United States on April 16, 2024
Style: mega 2
Just bought unit with battery, charged up drained with heater 3.68 K out Just like Utube video's, this unit is amazing so far, will update if any problems. God Bless!!!
One person found this helpful
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mike
1.0 out of 5 stars Do not buy from this company
Reviewed in the United States on January 6, 2024
Style: mega 2
This has been a terrible experience. Customer service can't help. I have many years experience with these types of products and this brand is bad. It will not charge, hold a charge or discharge efficiently. It's constantly dead after full sun days. Spend the extra money on something that works.
17 people found this helpful
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