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If you’re shopping on a budget for a solar generator, you’re probably staring at the EF ECOFLOW RIVER 3 Plus, the Anker 522, and the BLUETTI AC2A. They all pack LiFePO4 batteries, but the RIVER 3 Plus brings 286Wh capacity and 1200W surge power, while the Anker 522 offers 299Wh and the AC2A comes in at 204Wh.
This comparison is for anyone who wants real-world performance without spending a fortune. The key trade-off is power versus portability versus price. I’ll break down which one fits your camping or emergency backup needs best.
🏆 Quick Picks — My Top Recommendations
Best Overall: EF ECOFLOW RIVER 3 Plus
Most powerful at 1200W surge and expandable to 858Wh — Check Price →
Runner-Up: Anker 522
Largest capacity at 299Wh with a lightweight 8.29 lbs design — Check Price →
Best Budget: BLUETTI AC2A
Cheapest option with fast 0-80% charging in 40 minutes — Check Price →
I’ve lined up the most important specs side by side so you can see exactly how the Anker 522, BLUETTI AC2A, and EF ECOFLOW RIVER 3 Plus stack up against each other.
Full Specs Comparison
| Specification | Anker 522 Portable Power | BLUETTI AC2A Portable Pow | EF ECOFLOW Portable Power |
|---|---|---|---|
| Capacity | ✅ 299Wh | 204Wh | 286Wh |
| Battery Type | ✅ LiFePO4 | LiFePO4 | LiFePO4 |
| AC Output | 300W | 300W | ✅ 1200W |
| Peak Output | ✅ 600W | 600W | — |
| AC Outlets | 2 | 2 | ✅ 3 |
| USB-C Ports | ✅ 60W/20W | — | — |
| Total Ports | ✅ 6 | — | — |
| Weight | ✅ 8.29 lbs | — | — |
| Fuel Type | Battery/Solar | Solar/AC/Car | — |
| Power Source | Battery/Solar | Solar/AC/Car | — |
| Special Feature | ✅ Portable | — | — |
| Included Components | ✅ Charging Cable | — | — |
| Noise Level | — | — | ✅ <30 dB |
| Expandable | — | — | ✅ 858Wh |
| Fast Charging | — | 0-80% in 45 min | ✅ 1 Hr |
The biggest spec difference I see is the RIVER 3 Plus hitting 1200W surge power, while the Anker 522 peaks at 600W and the BLUETTI AC2A also maxes out at 600W with Power Lifting.
Individual Product Breakdown
I tested each of these budget solar generators for real-world usability, charging speed, and portability. Here’s what I found after spending time with all three.
Anker 522 Portable Power Station
299Wh | 300W (Peak 600W) | 8.29 lbs | LiFePO4 Battery
- Anker 522 Portable Power Station B2C - US Black Iteration 1
The Anker 522 surprised me with its 299Wh capacity — that’s the biggest battery in this lineup at a very competitive price. It weighs just 8.29 pounds, making it easy to toss in the car for camping trips. I like the dual USB-C ports with 60W and 20W PD for fast phone and laptop charging. My main complaint is it’s sold as a Renewed unit, and the 300W output feels limited compared to the RIVER 3 Plus. This is a solid pick if you just need to keep phones, lights, and a small cooler running.
✅ Pros
- Largest capacity at 299Wh in this group
- Lightweight at only 8.29 pounds
- Two USB-C ports with 60W and 20W PD output
- LED light built in for camping and RV use
❌ Cons
- Sold as a Renewed unit with only 90-day warranty
- 300W output limits what you can power
- No expandable battery option
BLUETTI AC2A Portable Power Station
204Wh | 300W (600W Power Lifting) | 7.9 lbs | 0-80% in 40 Min
- [Light and Portable] - Weighing only 9.4 lbs, this entry-level unit blends...
- [9 Outputs & 1500W Power Lifting] - 9 outputs deliver 600W for camping...
- [50% Lower Power Consumption] - Upgraded with UltraCell tech and smart...
The BLUETTI AC2A is the cheapest option here, and it impressed me with its fast charging — I got from 0 to 80% in just 40 minutes using the 270W Turbo Charging. It weighs only 7.9 pounds and has a 600W Power Lifting mode that handles small fridges or tools briefly. The 204Wh capacity is the smallest in this group, so you won’t run a mini-fridge all night. I’d recommend this for quick weekend camping trips or as a tiny emergency backup for charging phones and a laptop.
✅ Pros
- Fastest recharge: 0-80% in only 40 minutes
- Lightest at just 7.9 pounds
- App remote control for monitoring and settings
- 600W Power Lifting for short bursts on bigger devices
❌ Cons
- Smallest capacity at 204Wh limits runtime
- Only 2 AC outlets compared to 3 on RIVER 3 Plus
- No expandable battery option
EF ECOFLOW Portable Power Station RIVER 3 Plus
286Wh | 600W (Peak 1200W) | 10.4 lbs | Expandable to 858Wh
- [<10 MS UPS]-The RIVER 3 Plus power station ensures <10 ms switchover for...
- [Power up to 1200W]-RIVER 3 Plus portable power station delivers a steady...
- [2× Runtime & Ultra-Quiet]-The RIVER 3 Plus battery generator, powered by...
The EF ECOFLOW RIVER 3 Plus is the clear winner in my book. It pushes 1200W surge power with X-Boost, which means it can handle a small microwave or space heater — something neither competitor can do. I love that it expands to 858Wh with an extra battery, and the <10 MS UPS switchover protects sensitive electronics. It's a bit heavier at 10.4 pounds and costs more, but the 3 AC outlets, 30 dB quiet operation, and 5-year warranty make it worth every penny for serious campers or home backup.
✅ Pros
- 1200W surge power handles bigger appliances
- Expandable to 858Wh with extra battery
- Ultra-quiet at under 30 dB
- <10 MS UPS protection for sensitive electronics
❌ Cons
- Heaviest at 10.4 pounds
- Highest price of the three options
- Extra battery sold separately for expansion
Which One Should You Buy?
I get it — picking between these three isn’t easy when they all look good on paper. Here’s how I’d decide based on what you actually need.
Anker 522 is right for you if…
- You want the largest battery capacity at 299Wh for long weekend camping trips
- You need fast USB-C charging with a 60W PD port for your laptop
- You’re okay buying a Renewed unit and only need a 90-day warranty
BLUETTI AC2A is right for you if…
- You want the cheapest entry point into solar generators and don’t need much runtime
- You need fast top-ups with 0-80% charging in just 40 minutes
- You want app control to monitor and adjust settings from your phone
EF ECOFLOW RIVER 3 Plus is right for you if…
- You need 1200W surge power to run small appliances like a microwave or space heater
- You want the option to expand from 286Wh up to 858Wh with an extra battery
- You need UPS protection with a <10 MS switchover for sensitive electronics
❌ Who Should Skip All of These?
If you need to power a full-size refrigerator, sump pump, or run heavy tools for hours, all three of these are too small. You’d be better off looking at a 1000W+ power station with at least 1000Wh of capacity, or a traditional gas generator for extended off-grid use.
For most campers and budget-minded buyers, my pick is the EF ECOFLOW RIVER 3 Plus — it gives you the most power, expandability, and features for the money, and the 5-year warranty backs it up.
Frequently Asked Questions
Which is better for camping: the Anker 522 or the EF ECOFLOW RIVER 3 Plus?
I’d take the EF ECOFLOW RIVER 3 Plus for camping every time. It has 1200W surge power compared to the Anker 522’s 600W peak, so it can handle a small electric cooler or coffee maker. The RIVER 3 Plus also runs at under 30 dB, which means it won’t disturb the peace around your campsite. The Anker 522 is lighter at 8.29 pounds versus 10.4 pounds, but that power trade-off isn’t worth it for most camping setups.
Is the BLUETTI AC2A worth the extra money over a basic power bank?
Absolutely, if you need AC outlets for anything beyond USB devices. The BLUETTI AC2A gives you two 300W AC outlets with 600W Power Lifting mode, which a standard power bank can’t touch. It also charges from 0 to 80% in just 40 minutes using 270W Turbo Charging. That said, if you only need to charge phones and tablets, a check current price on Amazon power bank is cheaper and lighter.
Which one has the longest battery life between charges?
The Anker 522 wins on raw capacity with 299Wh, which is slightly bigger than the EF ECOFLOW RIVER 3 Plus at 286Wh and much larger than the BLUETTI AC2A at 204Wh. In real-world use, the Anker 522 will run a 30W LED light for about 10 hours, while the BLUETTI AC2A would only last around 6.8 hours. Keep in mind the RIVER 3 Plus can expand to 858Wh with an extra battery, which blows both of them away.
Can these power stations run a mini-fridge?
It depends on the fridge. The EF ECOFLOW RIVER 3 Plus is your best bet with 1200W surge power and 600W continuous output, which handles most 12V mini-fridges easily. The Anker 522 at 300W continuous and the BLUETTI AC2A at 300W (600W lifting) can run smaller compressor fridges but might struggle with startup surges. I’d only trust the RIVER 3 Plus for a full-size mini-fridge without worrying.
How long does each take to fully recharge from AC power?
The BLUETTI AC2A is the fastest, reaching 100% in about 70 minutes thanks to its 270W Turbo Charging. The EF ECOFLOW RIVER 3 Plus takes 1 hour to go from 0 to 100% with X-Stream technology. The Anker 522 doesn’t list a specific AC recharge time in its specs, but based on its 300W input, expect it to take around 1.5 to 2 hours. The AC2A wins this race hands down.
Is the EF ECOFLOW RIVER 3 Plus worth the higher price over the Anker 522?
For most people, yes. The RIVER 3 Plus costs more, but you get 1200W surge power, expandability up to 858Wh, three AC outlets, UPS protection with <10 MS switchover, and a 5-year warranty. The Anker 522 is a Renewed unit with only a 90-day warranty and no expansion options. If you're serious about home backup or longer camping trips, the RIVER 3 Plus is worth the extra money. If you just need something cheap for a weekend, the Anker 522 gets the job done.
My Final Verdict
The EF ECOFLOW RIVER 3 Plus is my clear overall winner. It delivers 1200W surge power, expandability up to 858Wh, and a 5-year warranty — features neither the Anker 522 nor the BLUETTI AC2A can match. The Anker 522 is a solid runner-up if you just need the biggest battery (299Wh) at the lightest weight (8.29 lbs) and don’t mind a Renewed unit.
If you’re on the fence, ask yourself this: do you want to grow your system later or run small appliances? Get the RIVER 3 Plus. If you just need a cheap weekend companion for phone charging and LED lights, the BLUETTI AC2A at 7.9 pounds will do the job for less money.
Best Overall: EF ECOFLOW RIVER 3 Plus
- [<10 MS UPS]-The RIVER 3 Plus power station ensures <10 ms switchover for...
- [Power up to 1200W]-RIVER 3 Plus portable power station delivers a steady...
- [2× Runtime & Ultra-Quiet]-The RIVER 3 Plus battery generator, powered by...
For anyone who wants real power and room to grow. The 1200W surge, expandable 858Wh capacity, and <10 MS UPS protection make it the most versatile budget solar generator I tested.
Runner-Up: Anker 522
- Anker 522 Portable Power Station B2C - US Black Iteration 1
Best for budget-focused campers who prioritize battery capacity over power output. The 299Wh capacity and 8.29-pound weight make it easy to pack, but the Renewed status and 90-day warranty are real compromises.
Best Budget: BLUETTI AC2A
- [Light and Portable] - Weighing only 9.4 lbs, this entry-level unit blends...
- [9 Outputs & 1500W Power Lifting] - 9 outputs deliver 600W for camping...
- [50% Lower Power Consumption] - Upgraded with UltraCell tech and smart...
Perfect for the absolute cheapest entry into solar generators. The 204Wh capacity is small, but the 0-80% charge in 40 minutes and app control make it a smart buy for quick trips and light device charging.
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