OUPES · Power station · Mega 5

Mega 5

Mega 5 combines 5,040Wh of stored energy with 4,000W rated AC output and up to 7,000W peak or surge capability. <20 ms, 2,200W UPS/EPS.

4,000W rated5,040WhRechargeable LiFePO4 batteryCheck availability

Check OUPES price Official listed price $3,499.00

(Sold Out) OUPES Mega 5 Home Backup & Portable Power Station | 4000W 5040Wh — Official product image · OUPES

Infographic gallery

Output, stored energy, charging, and portability.

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01 · Usable output

4,000W rated output

Battery4,000W / 7,000W

The comparison uses OUPES’s published rated and peak, surge, or maximum output figures.

02 · Energy & runtime

Listed capacity

5,040Wh

Published runtime guidance

Runtime depends on stored capacity, conversion efficiency and connected load

03 · Size & construction

112.4 lb / 51.0 kg

Listed weight

25.2 × 11.9 × 17.2 in

Dimensions

Battery or engine: LiFePO4 (LFP) battery system
Warranty: 5 years; free 1-year extension after registration

04 · Charging & continuity

Charging or integration

1,800W fast AC; 2,100W solar; 3,900W combined AC + solar

Backup transfer

<20 ms, 2,200W UPS/EPS

Noise

Quiet battery operation; fan noise varies by load

Official product gallery

Product views and factory feature graphics.

The current official image set for Mega 5 includes product views, connection diagrams, feature explanations, and compatible system configurations where OUPES publishes them.

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Complete specifications

The complete factory data available for comparison.

These pages retain OUPES's model-specific output, charging, battery, port, continuity, dimensions, environmental, engine, fuel, app-control, and warranty fields where published.

Follow charging, storage, and installation guidance. Whole-home connections and transfer equipment should be installed according to OUPES instructions and applicable electrical codes.

Comparison summary

AC output: 4,000W rated / up to 7,000W peak or surge
Stored energy: 5,040Wh
Battery chemistry: LiFePO4 (LFP)
Dimensions: 25.2 × 11.9 × 17.2 in
Listed weight: 112.4 lb / 51.0 kg
Price and availability: $3,499.00 official listed price; currently marked unavailable

Factory output & connection specifications

Battery capacity: 5,040Wh
Rated AC output: 4,000W
Peak / surge output: 7,000W
UPS / backup transfer: <20 ms, 2,200W UPS/EPS
Basic Capacity: 5040Wh.
Expansion Capacity: Up to 45.36 kWh with 8 B5.
AC Output Power: 4000W (Surge 7000W).
AC Outlets: 5*NEMA 5-20R (120V/20A). 1*TT-30R (120V/30A).
USB-A Output: 4*USB-A (QC 3.0).
USB-C Output: 2*USB-C (PD 60W per port).
12V DC Output: 2*DC 5521 (12V/10A). 1*Anderson (12V/30A). 1*Car Lighter (12V/10A). . INPUT .
AC Charging: 1800W.
AC Charging: 900W.
AC Charging: rechargable when connected with main unit. . GENERAL .

Factory charging & battery specifications

Battery chemistry: LiFePO4 (LFP)
Cycle life: 3,500+ cycles to 80%
Charging: 1,800W fast AC; 2,100W solar; 3,900W combined AC + solar
Cycles: > 3500 cycles to 80%.
Solar Charging: 2100W Max, 12-148V DC. MPPT: 18-140V, 15A Max.
Solar Charging: 3900W Max. . . GENERAL .
Pass-through Charging: Yes.
Fastest Charging Speed: Fully charge in 1.3 hours

Factory dimensions & operating specifications

Listed weight: 112.4 lb / 51.0 kg
Dimensions: 25.2 × 11.9 × 17.2 in
Net Weight: 112.4lbs (51.0 kg).
Dimensions (L x W x D): 25.2 x 11.9 x 17.2in (641.5 x 304.5 x 437.5mm).
Operating Temperature: 0℃~40℃ (30℉~104℉).
Storage Temperature: 0℃~40℃ (30℉~104℉).
IP Grade: IP21. . BATTERY .
Net Weight: 96.67lbs (43.8kg).
Dimensions (L x W x D): 25.2*11.9*17.2in(641.5*304.5*437.5mm).
Operating Temperature: 4℉ - 185℉ (-20°C - 85°C). Best
Working Temperature: 77℉ (25℃).
IP Grade: IP65.

Factory ownership, control & protection specifications

Warranty: 5 years; free 1-year extension available after registration
UPS/EPS: < 20ms, 2200W.
Connectivity: WiFi 2.4GHz/Bluetooth.
App Control: Yes.
Certification: UN38.3; MSDS.
Warranty: Up to 6 Years. (Basic 5 years warranty. . Register for 1 Extra Year Free!).
Warranty: Up to 6 Years. (Basic 5 years warranty. . Register for 1 Extra Year Free!). . POWER . Maximum Power 240W. Cell Lamination ETFE (Ethylene tetrafluoroethylene). Cell
Warranty: 12 Months. . . Download Manual > Download Manual > Download Manual > .

Additional factory specifications

Type: LFP (LiFePO4).
BMS: Yes. . OUTPUT .
Type: Pure Sine Wave.
Type: Pure Sine Wave. . INPUT .
Type: Monocrystalline Silicon. Cell Efficiency ≥ 23%. Open Circuit Voltage (OCV) . 24.6V (Vmp 20.5V). Short Circuit Current (Isc) 12.3A (Imp 11.7A). . GENERAL . Connector Standard MC4 Connector. Weight 18.48lb (8.4kg). Cable Length 196.8 inches. Dimensions (Unfolded) 99.5 x 23.2 x 1.4in (2529 x 590 x 35mm). Dimension (Folded) 26.1 x 23.2 x 2.4 (665 x 590 x 60mm).

Official product questions & technical answers

What is the warranty period for Mega 5?: The Mega 5 comes with a 5-year warranty. you can get a FREE 1-year warranty extension after warranty registration .
Does it support pass-through charging?: Yes, the OUPES Mega 5 supports pass-through charging without damaging the battery.
Can I use third party solar panel?: Most of the solar panels on the market are compatible, but you need to check whether the specifications and plug are matched (Within 150V, and the connection port is Anderson), you also can feel free to contact us via email before connecting them. Actually, we suggest customers connect the OUPES solar panel with the OUPES solar generator, as there is already a solution provided in the generator and also the third-party solar panel. Different companies' solutions may conflict, causing charging not to be done as efficiently as desired although they are universal.
Can I use a third party expanded battery?: No, the Mega 5 can't be expanded with third party battery. Please choose B5 expanded battery with it.
What types of battery does OUPES use?: LiFePO4 - The Battery is estimated to have over 80% of your original capacity after 3500 cycles, with a gradual reduction after that. (Note: this doesn't mean the battery only has a 3500 cycle life span. It means that up until 3500 cycles, the unit can perform at its best. However, due to battery degradation there will be a gradual decline in performance after 3500 cycles.) . . It has 6 times of longer lifespan than ordinary lithium batteries. LiFePO4 battery is much safer, more stable and more eco-friendly with no heavy metal elements that are harmful to people.
How do I know if the Mega 5 can power my device?: The OUPES Mega 5 can run any device that requires less than 120V and 4000W. You can calculate the charge time using the following formula: 5040Wh* 0.85 / operating power of your device.
Is it waterproof? Is it fireproof?: OUPES Mega 5 is not waterproof. Please make sure to shelter it from rain. The outer case of our products is made of fireproof material UL 94-V0.
How to keep this product when it is not used 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.
Does the OUPES Mega 5 package come with all the charging cables?: Yes, the OUPES Mega 5 package will come with all the charging cables, you don't need to purchase any extra cables.
Do you charge shipping fee?: We provide free shipping service in the continental United States. The prices on our website will deliver the product to your door.
Is the solar panel waterproof? Can I use an extension cable?: We have waterproof treatment for solar panels, but I do not recommend you use them in the rain. Portable solar panels cannot be fully waterproofed like hard solar panels. Long-term exposure to rain may reduce cell efficiency. The length of the solar charging cable is 16ft long. We also provide the extensions on the website. Please note that the charging efficiency may be reduced due to the charging cable being prolonged. It might require more time to finish charging with extension cables.

Official feature details

System capability

Mega 5 combines 5,040Wh of stored energy with 4,000W rated AC output and up to 7,000W peak or surge capability. <20 ms, 2,200W UPS/EPS.

Power and expansion

5,040Wh Capacity | 4,000W AC Pure Sine Wave Inverter (7,000W Surge).

Charging flexibility

LiFePO4 Battery with 3,500+ Life Cycles to 80%.

Battery and durability

Expandable Up to 45.36kWh with 8 B5.

Controls and continuity

5 Ways to Recharge (AC/Solar/Car/AC+Solar/Generator).

Portability detail

Fastest Charging Speed: Fully charge in 1.3 hours.

Compatibility note

Smart Control & Monitor in Cleanergy App.

Additional manufacturer note

Under ideal conditions without obstacles, the Bluetooth connection range of the Mega 5 is 5-10 meters.

Best-fit uses

Extended home backup
RV and off-grid power
High-demand appliances
Solar-backed emergency power

Standout features

4,000W rated output
Up to 7,000W peak or surge
5,040Wh listed capacity
LiFePO4 (LFP)

Match capacity and output to your actual loads.

Use the independent calculator before choosing a battery system or generator.

Check my power plan

Sources: OUPES Mega 5 OUPES products Official manualVerified September 15, 2026

Ownership resources

Accessories, manuals, and documents.

Start with the exact OUPES Mega 5 model or item number. Accessory families can look alike while using different connectors, electrical limits, engines, or mounting points.

Compatible accessories

Match by model and connection.

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Solar charging equipment

Shop OUPES solar panels, charging leads, and adapters intended for its portable-power ecosystem.

Match the connector, solar input voltage, current limit, and maximum input published for Mega 5.

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Expansion battery

Review OUPES expansion batteries and required connection cables.

Use only an expansion battery that OUPES explicitly lists for Mega 5; similar-looking ports do not establish compatibility.

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Case, cart, or protective cover

Protective and mobility accessories can make storage and transport easier.

Check the listed dimensions and model fit for Mega 5; do not block cooling inlets or exhaust fans during operation.

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Manuals & PDFs

Official product materials.

Owner’s or operator’s manualPDFOperating, safety, maintenance, and troubleshooting instructions for Mega 5.Official product pageProduct pageCurrent manufacturer overview, notices, specifications, downloads, and support links.

Compatibility note: Links lead to manufacturer or official retailer resources. Confirm the full model or item number, connector type, voltage, amperage, and published compatibility list before buying. Installation involving a home panel, inlet, transfer switch, or fuel plumbing should be handled as required by local code.