OUPES Power Stations & Solar Generators

OUPES has 2 units on Outage Geek, priced from $729 to $1,199. The least expensive OUPES model here is the OUPES Mega 2 at $729, and the lineup below runs cheapest first.

~$729

Power Station · Battery (LiFePO4)

OUPES Mega 2

The Mega 2 pairs 2,048 Wh of LiFePO4 with a 2,500 W inverter that surges to 5,400 W, and unlike most stations at this price it includes a TT-30R outlet for an RV cord; it is 120 V only, so a 240 V transfer-switch inlet is out. It expands to 10.24 kWh with up to four B2 packs, and AC input is 1,600 W fast or 3,700 W when combined with solar, which is how OUPES gets its 0.6-hour full-charge claim. The UPS changeover is specified under 20 ms, slower than the 10 ms figure EcoFlow quotes. At 48.5 lb it is portable but not light; the case is plain black with an LCD, and the fan shows up on the side. The warranty is the headline: five years by default and a sixth if you register. OUPES shows $1,499 struck through and charges $729. The tradeoffs are a small US service footprint, no published noise number, and a newer brand with less outage history than EcoFlow or Bluetti.

2,500 W / 5,400 W surge · up to fridge, freezer and the essentials

capacity: 2,048 Wh
expands to: 10,240 Wh

Best for Homeowners who want a 2 kWh station with a 30 A RV outlet with long warranty at a price well below EcoFlow and Bluetti.

Full spec sheet

~$1,199

Power Station · Battery (LiFePO4)

OUPES Mega 3

The Mega 3 is the big OUPES: 3,072 Wh of LiFePO4, a 3,600 W inverter with a 7,000 W surge, five 20 A outlets plus a TT-30R, and expansion to 15.36 kWh with up to six B2 packs. It is roughly the middle of the portable class between a 2 kWh camping unit and a whole-home battery, with a built-in trolley wheel and handle because it weighs 83.3 lb. Recharge is 1,800 W from AC or 3,900 W with AC and solar together, which OUPES quotes as about an hour to full. The UPS function is limited to 2,200 W with under 20 ms changeover, so the 3,600 W figure applies to normal operation and not seamless backup. The TT-30R takes an RV cord but is 120 V only, so it does not feed a 240 V transfer switch. OUPES shows $2,299 struck through and charges $1,199. The negatives are the same as the brand's: a small US service network, no published noise number, and less outage history than EcoFlow or Bluetti.

3,600 W / 7,000 W surge · up to fridge, freezer and the essentials

capacity: 3,072 Wh
expands to: 15,360 Wh

Best for Homeowners who want a 3 kWh station with a 30 A RV outlet that can run a refrigerator, well pump and furnace without paying for a wall battery.

Full spec sheet