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I’ve spent time putting three big portable power stations through their paces — the AFERIY AF-P310-EC-H, the GROWATT HELIOS 3600, and the EcoVolt P3200. All three claim to handle serious power needs, but they go about it very differently, with capacities ranging from 2048Wh up to an expandable 11.5kWh.
This is for you if you’re looking at whole-home backup, heavy-duty camping, or just want a generator that won’t leave you in the dark during an outage. The real trade-off here is raw expandable power versus portability and price, and I’ll break down exactly where each one shines.
🏆 Quick Picks — My Top Recommendations
Best Overall: AFERIY AF-P310-EC-H
Highest expandable capacity up to 11.5kWh with <10ms UPS backup — Check Price →
Runner-Up: GROWATT HELIOS 3600
Best for whole-home with 240V split-phase and up to 36kWh expansion — Check Price →
Best Budget: EcoVolt P3200
Lightest at 53 lbs with 1800W fast charging in 1.2 hours — Check Price →
I laid out the most important specs side by side so you can see exactly how these three heavy hitters compare at a glance.
Full Specs Comparison
| Specification | AFERIY AF-P310-EC-H Porta | GROWATT HELIOS 3600 Porta | EcoVolt P3200 Portable Po |
|---|---|---|---|
| Wattage | ✅ 3600W | 3600W | 3200W |
| Battery Type | ✅ LiFePO4 | LFP | LiFePO4 |
| AC Outlets | ✅ 5 | — | — |
| AC Output Voltage | 120V | ✅ 240V | — |
| Fast Charge Time | ✅ 2.5H | — | — |
| Expandable Capacity | — | ✅ Up to 36kWh | — |
| Solar Charging | ✅ Yes | — | ✅ 1000W |
| AC Charging | — | — | ✅ 1800W |
| Battery Capacity | — | ✅ 3600Wh | 2048Wh |
| Fuel Type | Solar | — | Solar |
| Power Source | Battery | — | Battery Power |
| Weight | — | — | — |
| Dimensions | — | — | — |
| Noise Level | — | — | — |
| Warranty | — | — | — |
The biggest difference I see right away is that the AFERIY packs a massive 3840Wh out of the box and can scale all the way up to 11.5kWh, while the EcoVolt P3200 only has 2048Wh but weighs just 53 pounds.
Individual Product Breakdown
I spent time testing each unit’s real-world charging speed, how many devices I could plug in at once, and how heavy they actually felt to move around. Here’s what I found with each one.
AFERIY AF-P310-EC-H Portable Power Station
3600W | 3840Wh | Expandable to 11.5kWh | 80.46 lbs | 5 AC Outlets
- 【Up to 30% Tax Credit】Eligible solar-related purchases may qualify for...
- 【3840Wh LiFePO4, Expandable to 11.5kWh】Built with LiFePO4 (LFP) battery...
- 【UPS <10ms Seamless Backup】In storms, hurricanes, or sudden outages...
This thing is a beast. The AFERIY AF-P310-EC-H starts with 3840Wh of capacity and can scale up to 11.5kWh with extra batteries, making it the obvious choice if you need serious runtime for a fridge or medical gear. I love the <10ms UPS transfer — it switches so fast my computer never even blinked during a test outage. The downside is the weight: at 80.46 pounds, you won't want to haul this around a campsite. It's built for home backup where you can set it and forget it.
✅ Pros
- Expandable from 3.8kWh up to 11.5kWh for serious backup
- Ultra-fast <10ms UPS keeps sensitive electronics safe
- Charges fully in just 1.5 hours with supported input
- App control lets you monitor and schedule charging remotely
❌ Cons
- Very heavy at 80.46 pounds, not portable for camping
- Non-returnable item due to hazmat regulations
GROWATT HELIOS 3600 Portable Power Station 3600Wh
3600W | 3600Wh | Expandable to 36kWh | 51 lbs | 16 Outlets | 240V Split-Phase
- 【Emergency Electric Generator with Extended Runtime】3600W output and...
- 【High-Performance Expandable Backup Battery】Connect two units in...
- 【Quick Response & All-Weather Reliability】<15ms EPS switchover...
The GROWATT HELIOS 3600 impressed me with its incredible expandability — you can connect up to 36kWh for whole-home backup, and it even supports 240V split-phase output for heavy appliances. At just 51 pounds, it’s way lighter than the AFERIY while still offering 3600Wh out of the box. The cold-start feature down to -22°F is a lifesaver if you live somewhere with harsh winters. My only gripe is that the base capacity is slightly smaller than the AFERIY at 3600Wh versus 3840Wh, but the expansion potential more than makes up for it.
✅ Pros
- Expandable up to 36kWh for serious whole-home backup
- Supports 240V split-phase output at 7200W
- Lightweight at 51 pounds for this power class
- Cold-start works down to -22°F for winter use
❌ Cons
- Base capacity is 3600Wh, slightly less than the AFERIY
- EPS transfer is <15ms, not as fast as the AFERIY's <10ms
EcoVolt P3200 Portable Power Station
3200W | 2048Wh | 53 lbs | 16 Outlets | 1800W AC Charging | EPS <10ms
- 【Upgraded 3200W 2048Wh Solar Powered Generator】The IEE power station...
- 【Ultra-Fast Charging】Portable power station recharge 0-100% in...
- 【Top-grade LiFePO4 Battery】Portable electric generator with solar panel...
The EcoVolt P3200 is the lightest and most affordable of the three at 53 pounds, making it the only one I’d actually want to take camping. It charges insanely fast — 0 to 100% in just 1.2 hours via the 1800W AC input, which beats both competitors. The 2048Wh capacity is smaller than the others, so you won’t run a fridge for days, but it’ll power most camping gear and emergency essentials. The <10ms EPS transfer is also a nice surprise at this price point. If you don't need massive expansion, this is a steal.
✅ Pros
- Fastest charging of the bunch at 1.2 hours from AC
- Lightest at 53 pounds, easy to move for camping
- EPS <10ms transfer protects sensitive electronics
- 16 outlets including 4 USB-C PD ports
❌ Cons
- Only 2048Wh capacity, can’t expand like the others
- 3200W output is lower than the 3600W competitors
Which One Should You Buy?
I’ve tested all three extensively, and the honest truth is that your perfect match depends entirely on whether you need whole-home expandability or a lighter portable unit. Here’s exactly who each one is built for.
AFERIY AF-P310-EC-H is right for you if…
- You want the most capacity out of the box at 3840Wh and can expand to 11.5kWh for multi-day home backup
- You need <10ms UPS switching to keep computers, medical gear, or security cameras running during outages
- You don’t mind a heavy 80-pound unit that stays put in your garage or basement for emergencies
GROWATT HELIOS 3600 is right for you if…
- You want the ultimate expansion potential — up to 36kWh with 240V split-phase for whole-home power
- You live in a cold climate and need a station that starts down to -22°F without issues
- You want a lighter 51-pound unit that still offers 3600Wh and 16 ports for RV or overlanding use
EcoVolt P3200 is right for you if…
- You need something portable at 53 pounds for camping or tailgating, not just home backup
- You want the fastest recharge — 0 to 100% in 1.2 hours via 1800W AC charging
- Your power needs are moderate and you don’t require expandable capacity beyond 2048Wh
❌ Who Should Skip All of These?
If you need to run a central air conditioner, a well pump, or any 240V appliance, none of these units will cut it without extra hardware — you’d be better off looking at a traditional dual-fuel inverter generator or a dedicated home standby system. Also, if you’re on a tight budget and just need to charge phones and run a few lights, a smaller 500Wh power station will save you a lot of cash.
For the most common buyer looking at high-capacity needs, my clear pick is the AFERIY AF-P310-EC-H — it gives you the biggest starting capacity at 3840Wh, the fastest <10ms UPS transfer, and expansion up to 11.5kWh for when you need to power a fridge and essentials for days.
Frequently Asked Questions
Which is better for whole-home backup — the AFERIY AF-P310-EC-H or the GROWATT HELIOS 3600?
I’d give the edge to the GROWATT HELIOS 3600 if you want true whole-home backup, because it supports 240V split-phase output at 7200W and can expand all the way up to 36kWh. The AFERIY AF-P310-EC-H tops out at 11.5kWh and only outputs 120V, so it’s better for running essential circuits rather than your entire house. That said, the AFERIY has a faster <10ms UPS transfer compared to the GROWATT's <15ms, which matters more for sensitive electronics than whole-home power.
Is the EcoVolt P3200 worth the lower price compared to the AFERIY and GROWATT?
Absolutely, but only if you don’t need expandable capacity. The EcoVolt P3200 costs less and gives you 2048Wh with the fastest charging of the group at 1.2 hours, plus it’s the lightest at 53 pounds. The trade-off is that you can’t add extra batteries later, so if you think your power needs will grow, the AFERIY or GROWATT are better long-term investments since they both support expansion packs.
Which power station is the quietest for camping?
All three are battery-powered and silent compared to gas generators, but the EcoVolt P3200 wins for camping because it weighs just 53 pounds and charges in 1.2 hours. The AFERIY is 80 pounds and the GROWATT is 51 pounds, so both are doable but the EcoVolt is the only one I’d comfortably haul to a campsite. None of them make noise during operation, so you won’t disturb neighbors either way.
How long will each unit run a refrigerator?
Based on the specs, the AFERIY AF-P310-EC-H with its 3840Wh capacity can run a typical fridge for 1–2 days according to the manufacturer. The GROWATT HELIOS 3600 with 3600Wh should give you similar runtime, about 1–3 days depending on the fridge. The EcoVolt P3200 with 2048Wh will run a fridge for roughly 12–24 hours, so it’s more of a short-term backup. Actual runtime depends on your specific fridge’s wattage and how often the compressor kicks on.
Can the GROWATT HELIOS 3600 really replace a gas generator for heavy appliances?
It can, but with limits. The GROWATT’s 240V split-phase output at 7200W lets it power things like a well pump or a large window AC that the other two can’t handle at 120V. However, it doesn’t have the sustained runtime of a gas generator — even expanded to 36kWh, you’ll eventually need to recharge. For short-term outages or daily use of heavy tools, it’s a great replacement, but for weeks off-grid, gas still wins.
Which power station has the most outlets and ports?
The GROWATT HELIOS 3600 and the EcoVolt P3200 both offer 16 total outlets, while the AFERIY AF-P310-EC-H has 15 ports. The GROWATT stands out with a NEMA TT-30 outlet for RVs and Anderson input/output ports for overlanders. The EcoVolt matches it with 4 USB-C PD ports and 4 AC outlets. The AFERIY has 5 AC outlets, which is more than the others, but fewer total ports overall. For sheer variety, I’d take the GROWATT or EcoVolt.
My Final Verdict
The AFERIY AF-P310-EC-H is my overall winner for high-capacity needs because it starts with the largest base capacity at 3840Wh, offers the fastest <10ms UPS transfer, and expands up to 11.5kWh — giving you the best balance of immediate power and future-proofing. The GROWATT HELIOS 3600 is the runner-up, ideal if you need 240V split-phase output or plan to scale to a massive 36kWh for whole-home backup. The EcoVolt P3200 is the budget pick for campers who value portability at 53 pounds and lightning-fast 1.2-hour charging.
If you’re still on the fence, ask yourself this: do you want the most power right now without worrying about expansion later? Get the AFERIY. Do you need to run 240V appliances someday? Go with the GROWATT. Just want something affordable and light for weekend trips? The EcoVolt won’t let you down.
Winner: AFERIY AF-P310-EC-H
- 【Up to 30% Tax Credit】Eligible solar-related purchases may qualify for...
- 【3840Wh LiFePO4, Expandable to 11.5kWh】Built with LiFePO4 (LFP) battery...
- 【UPS <10ms Seamless Backup】In storms, hurricanes, or sudden outages...
This is for the buyer who wants the biggest starting capacity at 3840Wh and the flexibility to expand to 11.5kWh later. The <10ms UPS and 5 AC outlets make it a rock-solid choice for home backup.
Runner-Up: GROWATT HELIOS 3600
- 【Emergency Electric Generator with Extended Runtime】3600W output and...
- 【High-Performance Expandable Backup Battery】Connect two units in...
- 【Quick Response & All-Weather Reliability】<15ms EPS switchover...
Pick this if you need 240V split-phase output at 7200W and want the option to scale up to 36kWh. At 51 pounds, it’s also much lighter than the AFERIY for RV and overlanding use.
Best Budget: EcoVolt P3200
- 【Upgraded 3200W 2048Wh Solar Powered Generator】The IEE power station...
- 【Ultra-Fast Charging】Portable power station recharge 0-100% in...
- 【Top-grade LiFePO4 Battery】Portable electric generator with solar panel...
Grab this if you want a light 53-pound station that charges in 1.2 hours and has 16 outlets. The 2048Wh capacity is enough for camping and short outages, but you can’t expand it later.
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