The OUPES Mega 2 strikes a balance between compact portability and serious backup performance. With a 2048Wh LiFePO₄ battery, 2500W continuous output, fast hybrid charging, and expandability to over 8kWh, it’s built for homeowners, RV users, and outdoor professionals who need reliable off-grid power.
Product Overview Table
| Feature | Specification |
|---|---|
| Battery Capacity | 2048Wh |
| Inverter Power | 2500W (pure sine) / 5000W surge |
| Battery Type | LiFePO₄ (>3,500 cycles to 80%) |
| Weight | 45.2 lbs |
| Charging Methods | AC (1500W fast / 750W slow), Solar (1000W MPPT), Car, AC+Solar up to 2500W |
| Expandability | Up to 8.19kWh with two B2 batteries |
| UPS/EPS | <20 ms switchover |
| Ports | 6× AC outlets, 2× USB-C (100W PD), 4× USB-A, 2× DC5521, 1× Car port |
| Dimensions | 17.9 × 10.6 × 12.2 in |
| App Control | Wi-Fi + Bluetooth (OUPES App) |
| Protection | IP21, 5-year warranty (+1 year with registration) |
Performance
With 2500W continuous output and 5000W surge capacity, the Mega 2 easily powers refrigerators, microwaves, power tools, and sensitive electronics. It doubles as a UPS with a <20 ms switchover, keeping essentials like internet and medical devices running seamlessly during blackouts.
Battery & Specs
- Chemistry: Long-life LiFePO₄ (>3,500 cycles)
- Base capacity: 2048Wh
- Expandable: Add up to 2× B2 batteries (2048Wh each) for a total of 8.19kWh
- BMS: Monitors temperature, overload, and short-circuit for safety
This setup delivers durability for daily use, long trips, and frequent outages.
Portability & Design
At 45.2 lbs, the Mega 2 is heavier than the Mega 1 but still manageable with its built-in handles. Its 17.9 × 10.6 × 12.2 in frame is compact enough for RV storage or home closets. A bright LCD and app connectivity provide real-time status and remote control.
Charging Options
The Mega 2 offers multiple high-speed recharge methods:
- AC (Fast Mode): 1500W (~90 min recharge)
- AC (Slow Mode): 750W (~3 hrs)
- Solar: 1000W MPPT (supports 12–150V) ~2 hrs with ideal panels
- AC + Solar Hybrid: up to 2500W (~1 hr full recharge)
- Car Input: slower, useful for travel top-ups
These options make it flexible for both stationary and mobile lifestyles.
Price & Value
Positioned above the Mega 1, the Mega 2 is competitively priced among 2kWh-class LiFePO₄ units. Its hybrid 2500W charging speed and expandability to 8kWh give it strong long-term value for households and pros needing scalable backup.
Ideal Use Cases
- Home Backup: Runs kitchen appliances, medical devices, and home networking.
- RV & Vanlife: Handles heavy-duty cooking gear, heaters, and laptops.
- Outdoor Work: Reliable clean power for tools and equipment.
- Emergency Preparedness: Expandable storage covers multi-day outages.
Pros and Cons
Pros:
- 2500W continuous / 5000W surge power
- 1000W solar input + AC+Solar hybrid charging
- Expandable to 8.19kWh
- LiFePO₄ with >3,500 cycles
- 6 AC outlets + dual 100W USB-C
Cons:
- Heavier at 45 lbs
- IP21 (indoor/covered use only)
- No 240V split-phase support
Final Verdict
The OUPES Mega 2 is a high-performance, expandable power station for those who need more than a 1kWh unit but don’t want the weight and price of a 3–5kWh model. With fast hybrid charging, a strong port selection, and UPS functionality, it’s an excellent choice for families, RV owners, and professionals seeking dependable off-grid power.
- 2048Wh base capacity, and expandable to 10.24kWh Capacity with 4x B2 Smart Extra Batteries (sold separately) for multi-day power needs.
- Power High-Wattage Devices with 2500W AC output (5400W surge) – run refrigerators, CPAP, or power tools.
- 1600W AC Fast Charging fully charges in 1.5 hours – 2x faster than competitors’ standard charging.
FAQs
Does the OUPES Mega 2 work as a UPS?
Yes, it provides <20 ms switchover for uninterrupted backup.
Can I expand its battery?
Yes, add up to 2× B2 batteries for a total of 8.19kWh.
How fast does it recharge?
AC + solar hybrid input can fully recharge the Mega 2 in about 1 hour.
Is it suitable for outdoors?
It’s rated IP21, so it should be kept indoors or under cover when used outdoors.
Last update on 2026-01-20 / Affiliate links / Images from Amazon Product Advertising API