OUPES Mega 2

~$729approx. list price

800 WLights, phones, router, a CPAP
2,200 WFridge, freezer and the essentials
4,000 WFurnace blower, sump pump or a window AC
7,500 WWell pump or a small central AC
18,000 WWhole home with central air

2,500 W running, 5,400 W surge — sustains the fridge, freezer and the essentials tier and everything below it.

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

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.

From the spec sheet

Specifications

Battery capacity: 2,048 Wh
Expandable to: 10,240 Wh
Continuous output: 2,500 W
Surge output: 5,400 W
Runtime: Fridge (~150W): ~11 hrs on base unit; ~55 hrs with four B2 packs

Type: Power Station
Fuel: Battery (LiFePO4)
Outlets: 4x 120V 20A (5-20R), 1x TT-30R 120V 30A, 2x USB-C PD 100W, 4x USB-A 18W, 12V Anderson 30A, car 12V 10A, 2x DC5521
Transfer-switch ready: No
Weight: 48.5 lbs
Warranty: 5-year, 6 with free registration
Model: OPS-PW-MEGA 2

2,048 Wh LiFePO4, expands to 10.24 kWh·2,500 W / 5,400 W surge with TT-30·5-year warranty, 6 if registered

At a glance

Strengths

+TT-30R 30 A outlet takes an RV cord
+5,400 W surge covers well pumps and refrigerators
+Up to 3,700 W input with AC plus solar charges quickly
+Seamless UPS under 20 ms

At a glance

Drawbacks

−UPS changeover of under 20 ms is slower than EcoFlow's 10 ms
−Noise level not published
−48.5 lb is hefty for a camping unit
−Small US service network and shorter outage track record than the big brands
−TT-30R is 120 V; no L14-30 for a 240 V transfer switch

Head to head

Compare the OUPES Mega 2

vs Goal Zero Yeti 700 vs OUPES Mega 3

Related units

OUPES Mega 3

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