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OUPES Mega 3 Home Backup & Review
3,072Wh of storage, 3,600W continuous output, LiFePO4 cells. Listed at $1,149 at OUPES.
The OUPES Mega 3 Home Backup & is a home backup systems unit holding 3,072Wh. At $0.37 per watt-hour it is priced below the median for the band, which makes it one of the cheaper ways to buy this much capacity. It uses LiFePO4 cells rated for 3,500 cycles, so it is built to be kept rather than replaced. It lists at $1,149 against an $4,659 MSRP.
Manufacturer price at the time of writing. This link is not a paid placement.
Computed from this unit’s published specification, not from a manufacturer claim. Method and the full catalogue comparison are in our power station price index.
What the OUPES Mega 3 Home Backup & will run, and for how long
Runtimes below are calculated from the 3,072Wh rated capacity, derated to 85% for AC loads and 92% for USB and 12V loads to cover inverter and conversion losses. They are arithmetic, not lab measurements, but they are the same arithmetic applied to every unit we track, so the comparison holds. Anything drawing more than the 3,600W continuous rating is left off the list because this unit cannot carry it, though the 7,000W surge rating covers brief startup spikes from motors and compressors.
| Load | Estimated runtime |
|---|---|
| Phone charge (12Wh) | 235 charges |
| Wi-Fi router (10W) | 261 hr |
| LED work light (10W) | 283 hr |
| CPAP, humidifier off (40W) | 65 hr |
| Laptop (60W) | 44 hr |
| 12V portable fridge (45W avg) | 58 hr |
| 55-inch TV (90W) | 29 hr |
Real figures land below these. A fridge cycles rather than drawing continuously, and cold weather costs a lithium pack usable capacity, so treat the table as the ceiling rather than the expectation.
OUPES Mega 3 Home Backup & specifications
Manufacturer figures, gathered so you can read them against everything else we track rather than against the marketing page they came from.
| Capacity | 3,072Wh |
| Continuous AC output | 3,600W |
| Surge / peak | 7,000W |
| Cell chemistry | LiFePO4 |
| Rated cycle life | 3,500 cycles |
| Warranty | 1 years |
| Price at OUPES | $1,149 |
| Cost per watt-hour | $0.37 |
How the OUPES Mega 3 Home Backup & compares
The closest units we track from other manufacturers in the same band, matched on capacity rather than on price.
| OUPES Mega 3 Home Backup & | Jackery HomePower 3000 | ALLPOWERS R3500 Home Backup | |
|---|---|---|---|
| Capacity | 3,072Wh | 3,072Wh | 3,168Wh |
| Output | 3,600W | 2,400W | 3,200W |
| Cycle life | 3,500 cycles | 4,000 cycles | — |
| Weight | — | 60 lb | 93 lb |
| Price | $1,149 | $1,399 | $1,424 |
| Cost per watt-hour | $0.37 | $0.46 | $0.45 |
Where the OUPES Mega 3 Home Backup & sits in its band
We track 21 units in the home backup systems band with both a price and a published capacity. They run from $489 to $10,999, and from 1,024Wh to 20,000Wh. On cost per watt-hour the OUPES Mega 3 Home Backup & ranks 7 of 21, where 1 is the cheapest capacity in the band. That puts it in the cheapest third, which is the single strongest thing on its spec sheet. Ranking on cost per watt-hour deliberately ignores build quality, port selection and warranty, so read it as one input rather than as the answer.
Alternatives to the OUPES Mega 3 Home Backup &
Units we track in the same band that are close enough to be genuine substitutes, matched on capacity. Each links to its own review.
- Jackery HomePower 3000 review — 3,072Wh, 2,400W output, listed at $1,399, $0.46 per watt-hour, dearer capacity than the OUPES Mega 3 Home Backup &.
- OUPES Titan 3 Home Backup & review — 3,072Wh, 3,600W output, listed at $1,099, $0.36 per watt-hour, cheaper capacity than the OUPES Mega 3 Home Backup &.
- ALLPOWERS R3500 Home Backup review — 3,168Wh, 3,200W output, listed at $1,424, $0.45 per watt-hour, dearer capacity than the OUPES Mega 3 Home Backup &.
- Mango Power E Home Backup and review — 3,533Wh, 3,000W output, listed at $1,299, $0.37 per watt-hour, cheaper capacity than the OUPES Mega 3 Home Backup &.
Who the OUPES Mega 3 Home Backup & suits
It is a sensible buy for whole-circuit backup, extended off-grid stays, and running heavy appliances without rationing them. It is the wrong tool for anyone who needs something genuinely portable, since capacity at this level comes with real weight.
OUPES Mega 3 Home Backup & questions
How long will the OUPES Mega 3 Home Backup & run a fridge?
A full-size fridge averages about 50W once you account for the compressor cycling on and off. From 3,072Wh, derated to 85% for inverter losses, that is roughly 52 hr on a full charge. A 12V portable fridge draws less and will run considerably longer.
Can the OUPES Mega 3 Home Backup & be charged by solar?
OUPES does not publish a maximum solar input for this model. Rather than estimate one, we leave it out. Check the manual that ships with the unit before buying panels for it.
What warranty does the OUPES Mega 3 Home Backup & carry?
OUPES covers it for 1 years, and rates the cells for 3,500 charge cycles. Cycle life and warranty are different promises, and the cycle figure is the one that tells you how long the pack stays useful.
Is the OUPES Mega 3 Home Backup & worth it?
At $1,149 it works out at $0.37 per watt-hour. It costs less per watt-hour than the median unit in its band, which is the strongest argument in its favour. Read the comparison table above against the two closest rivals before deciding.
What is not published
OUPES does not state the weight, the maximum solar input for this model. We list figures rather than estimate them, so those rows stay empty until the manufacturer publishes them. If you need one of them to make the decision, ask OUPES directly and hold them to the answer.
How we assess these
Every figure on this page comes from the manufacturer, and every derived number, cost per watt-hour and estimated runtime, is calculated the same way for all 437 products we track. That is what makes the comparison meaningful: we are not scoring units against a private impression of them, we are putting published figures side by side and doing the arithmetic in public. Where a manufacturer stays quiet, we say so rather than filling the gap.