OUPES Mega 2 Pro: what it runs and for how long
A 2,048 Wh lithium iron phosphate station with 2,500 W of output (surge rating not published). At the default 85% efficiency that is 1,741 Wh you can use.
Updated
Key numbers
2,048Wh
Rated capacity
1,741Wh
Usable at 85%, 2,048 × 0.85
2,500W
Continuous output
Not published
Surge, checks use the continuous rating
48.7lb
Weight, 22.1 kg
$1,599
List price, $0.78 per Wh, as of October 2026
Enough Watts may earn a commission when you buy through links on this page. It never changes the math or the ranking.
What it runs
It powers all 16 common appliances below, each on its own. A modern full size refrigerator runs about 32.1 h on a full charge.
| Appliance | Watts | Can it power it | On a full charge |
|---|---|---|---|
| Phone charging | 20 W | Runs it | 3.6 daysSurge rating not published, so the check uses the continuous rating. |
| Laptop (while charging) | 65 W | Runs it | 26.8 hSurge rating not published, so the check uses the continuous rating. |
| Wi-Fi router and modemestimate | 28 W | Runs it | 2.6 daysSurge rating not published, so the check uses the continuous rating. |
| LED bulb, 60 W equivalent (800 lumens) | 8.5 W | Runs it | 8.5 daysSurge rating not published, so the check uses the continuous rating. |
| TV, 55 inch LED (LCD) | 82 W | Runs it | 21.2 hSurge rating not published, so the check uses the continuous rating. |
| CPAP machine (no humidifier) | 11 W | Runs it | 6.6 daysSurge rating not published, so the check uses the continuous rating. |
| Oxygen concentrator (home, stationary) | 290 W | Runs it | 6.0 hCounts the running watts for every hour you enter.Starting watts not published; motors often need 2 to 3 times their running watts to start.Surge rating not published, so the check uses the continuous rating. |
| Box fan (20 inch) | 125 W | Runs it | 13.9 hCounts the running watts for every hour you enter.Starting watts not published; motors often need 2 to 3 times their running watts to start.Surge rating not published, so the check uses the continuous rating. |
| Refrigerator (modern, full size) | 275 W1,000 W to start | Runs it | 32.1 hSurge rating not published, so the check uses the continuous rating. |
| Chest freezer | 300 W750 W to start | Runs it | 2.2 daysSurge rating not published, so the check uses the continuous rating. |
| Sump pump (1/2 HP) | 925 W1,725 W to start | Runs it | 1.9 hAssumes the motor runs the whole time; real use is often less.Surge rating not published, so the check uses the continuous rating. |
| Drip coffee maker | 900 W | Runs it | 1.9 h of useSurge rating not published, so the check uses the continuous rating. |
| Microwave oven (1,000 W cooking power) | 1,530 W | Runs it | 1.1 h of useSurge rating not published, so the check uses the continuous rating. |
| Electric kettle | 1,500 W | Runs it | 1.2 h of useSurge rating not published, so the check uses the continuous rating. |
| Window air conditioner (5,000 BTU) | 525 W1,050 W to start | Runs it | 3.3 hAssumes the motor runs the whole time; real use is often less.Surge rating not published, so the check uses the continuous rating. |
| Electric space heater (1,500 W) | 1,500 W | Runs it | 1.2 hSurge rating not published, so the check uses the continuous rating. |
Running time is usable watt hours divided by the appliance's average draw, with nothing else plugged in. Loads used for minutes a day show minutes of use. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.
Explained in: Why you get less than the rated capacity, Starting watts explained and How to read an appliance label for watts.
Will it run your appliance
Pick any of the appliance types in the data to see whether the OUPES Mega 2 Pro powers it and for how long.
Recharging
From the wall
Maximum AC charging input: 1,800 W.
From solar
It takes up to 1,000 W of solar. Worked at 4 peak sun hours, counting 75% of the panel rating to allow for heat, angle and controller losses:
- 200 W of panels × 4 h of sun × 0.75 = 600 Wh a day. From empty to full: 2,048 ÷ (200 × 0.75) = 13.7 hours of sun.
- 1,000 W of panels × 4 h of sun × 0.75 = 3,000 Wh a day. From empty to full: 2,048 ÷ (1,000 × 0.75) = 2.7 hours of sun.
Work out other panel sizes for the OUPES Mega 2 Pro
Explained in: How much solar to recharge a power station.
From a car
Car charging input: not published.
Expansion and backup mode
It takes expansion batteries (B2 Extra Battery) up to 10,240 Wh in total: 8,704 Wh usable (10,240 × 0.85).
Backup (UPS) mode: the maker states a switchover of 20 ms or faster.
Boost Mode can run this at up to 3,600 W by lowering the voltage. That suits heaters and kettles, not motors or electronics. The verdicts on this site never count it as output.
Explained in: Power station backup mode (UPS) explained.
Full specifications
- Rated capacity
- 2,048 Wh
- Battery chemistry
- LiFePO4 (lithium iron phosphate)
- Cycle life
- 4,000 cycles to 80% capacity
- Continuous AC output
- 2,500 W
- Surge rating
- Not published
- Boost mode
- Boost Mode, up to 3,600 W for resistive loads
- AC outlets
- 5
- AC voltage
- 120 V
- TT-30 RV outlet
- yes
- L14-30 outlet
- no
- USB-C
- 2 ports, up to 140 W
- USB-A
- 2 ports
- 12 V car outlet
- up to 120 W
- Wall charging input
- up to 1,800 W
- Solar input
- up to 1,000 W
- Expansion batteries
- yes, up to 10,240 Wh in total (B2 Extra Battery)
- Backup (UPS) switchover
- 20 ms or faster
- Weight
- 48.7 lb (22.1 kg)
- Size (box)
- 18.4 × 11.7 × 11.6 in468 × 296 × 294 mm, largest side first
- Ingress rating
- IP21
- App connection
- Bluetooth, Wi-Fi
- Warranty
- 5 years
Battery chemistry: LiFePO4 vs NMC batteries in power stations.
Price
$1,599 list price as of October 2026, the regular price on the maker's US store. That is $0.78 per Wh of rated capacity. Sale prices change often and are not stored; the maker's page shows today's price and stock.
OUPES's page for the Mega 2 Pro (opens in a new tab)
Enough Watts may earn a commission when you buy through links on this page. It never changes the math or the ranking.
Similar stations
The nearest capacities in the data, from any brand.
| Power station | Capacity | Output | Surge | Weight | Price |
|---|---|---|---|---|---|
| Anker SOLIX C2000 Gen 2 | 2,048 Wh | 2,400 W | 4,000 W | 41.7 lb (18.9 kg) | $1,499.99$0.73 per Wh |
| DJI Power 2000 | 2,048 Wh | 3,000 W | not published | 48.5 lb (22 kg) | $1,899$0.93 per Wh |
| EcoFlow DELTA 3 Max | 2,048 Wh | 2,400 W | 4,800 W | 44.8 lb (20.3 kg) | $1,199$0.59 per Wh |
| EcoFlow DELTA 3 Max Plus | 2,048 Wh | 3,000 W | 6,000 W | 48.7 lb (22.1 kg) | $1,599$0.78 per Wh |
Sources
Researched from these pages, then checked against them a second time. The check corrected at least one figure.
- OUPES Mega 2 Pro Home Backup & Portable Power Station 2500W 2048Wh maker product page, checked
We read published specifications and do the math; we do not test products. The methodology states every formula on this page.