OUPES Mega 3 Portable Power Station
SVT Score, Upper
3,072 Wh LiFePO4 station at 83.3 lb with a 3,600 W inverter and a TT-30R outlet, 120 V only; TheSolarLab drew 86 percent and AVERAGE JOE 88 percent of rated capacity on AC.
$1,199
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Usability
6.7 out of 10It stores 3,072 Wh, in the upper half of the large tier, so it scores 7 on capacity.
TheSolarLab drew 86 percent of it at about 2,968 W. Its inverter is rated 3,600 W continuous at 120 V only, so it scores 10 on power output, though TheSolarLab found it barely handled loads above 3,600 W against a 7,000 W surge rating.
OUPES states a full wall charge in 1.8 hours at 1,800 W and solar input tops out at 2,100 W, so it scores 8 on recharging; TheSolarLab measured just over two hours.
OUPES rates the cells for 3,500 cycles to 80 percent capacity, so it scores 6 on battery life.
It switches to battery in under 20 ms for loads up to 2,200 W and takes six B2 batteries to a rated 15.36 kWh, but OUPES sells no transfer switch for it, so it scores 6 on backup readiness.
OUPES publishes no safety certificate for it and no certifier directory lists it by model, so it scores 2 on verification.
Better on verificationEcoFlow DELTA ProSGS lists it to UL 2743. $1,899Scores 8.0OUPES gives it 5 years and adds a sixth free when it is registered, so it scores 8 on warranty and support.
Every Exodus, Mega and Guardian station carries five years, with a sixth for registering, and oupes.com orders can be returned within 30 days.
$1,199.00 at oupes.com.
3,600 W holds, the 7,000 W surge did not
The Mega 3 is OUPES's 3,072 Wh LiFePO4 station, an 83.3 lb wheeled unit with five 120 V 20 A outlets and a TT-30R outlet, on pre-order to ship October 25.
It suits a buyer who wants 3 kWh and a full 3,600 W at 120 V, with room to add batteries and solar later, and who has no 240 V load such as a well pump.
Strengths
- 3,600 W continuous from five 20 A outlets and a TT-30R
- 2,100 W solar input at 12 to 148 V
- 86 to 88 percent usable on AC in two testers' runs
- Expands to a rated 15.36 kWh with six B2 batteries
- Each B2 battery takes its own 2,100 W of solar
- Held about 3,570 W with a B2 attached in AVERAGE JOE's test
Drawbacks
- 120 V onlyand two units cannot be paired
- UPS mode covers loads up to 2,200 W only
- Barely handled loads above 3,600 W in TheSolarLab's test despite a 7,000 W surge rating
- No OUPES transfer switchthe product page points to a third-party kit
- OUPES publishes its charge time four ways: 0.81, 1.7 and 1.8 hours
- 83.3 lb on hard plastic wheels
Specs
- Capacity3,000-3,999 Wh
- AC Output3,000-3,999 W
- Output Voltage120 V only
- Battery ChemistryLiFePO4
- Rated Cycles3,000-3,999 cycles
- Safety ListingNone verifiable
- Solar Input2,000-3,999 W
- Backup Switchover11-20 ms
- Warranty5 Years
- Expandable To10-19.9 kWh
- Weight83.3 lb
At a glance
- 12 V 30 A Anderson output
- Wheels and telescoping handle
- Wi-Fi and Bluetooth app
OUPES is the brand of Shenzhen Jiexun Energy Storage Co., Ltd., registered in 2021, and OUPES Inc of Rialto, California, sells its stations in the US.
It sells direct from oupes.com, through its own OUPES store on Amazon US, and as a marketplace seller on Walmart.com and Lowe's.com.
The OUPES Mega 3 is a 3,072 Wh LiFePO4 station rated 3,600 W continuous and 7,000 W surge from five 120 V 20 A outlets and a TT-30R 30 A outlet, with two 100 W USB-C ports, four 18 W USB-A ports, a 12 V 30 A Anderson output, a 12 V 10 A car outlet and two 12 V 10 A DC5521 ports. OUPES rates AC charging at 1,800 W fast or 900 W slow, its Amazon listing states a full wall charge in 1.8 hours, and it takes up to 2,100 W of solar through one Anderson input at 12 to 148 V, or 3,900 W with AC and solar together. OUPES rates the cells for 3,500 cycles to 80 percent capacity and states a UPS switchover under 20 ms for loads up to 2,200 W, and six B2 batteries, $600 each, take it to a rated 15.36 kWh. Its output is 120 V only from one unit, and OUPES sells no transfer switch for it; its product page points to a third-party Reliance Pro/Tran 2 kit and a TT-30P to L14-30R cord on Amazon. It weighs 83.3 lb, measures 25.2 x 11.9 x 17.2 in and is rated IP21. It is a pre-order shipping October 25, 2026.
