The short version: The base specs are almost the same, so buy on the expansion ceiling. Jackery's HomePower 2000 Plus v2 reaches 12kWh, EcoFlow's DELTA 3 Max Plus reaches 10kWh, and Anker's C2000 Gen 2 stops at 4kWh. If you will never add a battery, the Anker is an efficient, powerful machine and the Jackery Explorer 2000 v2 at $798.99 is the cheapest way into the class.
The base units
- Jackery Explorer 2000 v2: 2,042Wh, 2,200W with 4,400W surge, about 1.7 hours to full, 39.5 lb, under 30dB, roughly 95% charge retained after 12 months in storage. $798.99. Not expandable.
- Jackery HomePower 2000 Plus v2: 2,048Wh, 2,400W with 4,800W surge, expands to 12kWh, 140W USB-C, Priority Routing. $1,068.99.
- Anker SOLIX C2000 Gen 2: 2,048Wh, 2,400W rated and 4,000W peak, 9W idle draw, 0 to 80% in 45 minutes and full in 58, 800W alternator charging, six ways to recharge. Expands to 4kWh with one BP2000 Gen 2 pack.
- EcoFlow DELTA 3 Max: 2,048Wh, 2,400W with 4,800W surge, X-Boost to 3,400W, 0 to 80% in 68 minutes, 20.3 kg.
- EcoFlow DELTA 3 Max Plus: 2,048Wh, 3,000W with 6,000W surge, X-Boost to 3,800W, 0 to 80% in 43 minutes, expands from 2 to 10kWh, per-circuit output priority in the app.
Why the expansion ceiling is the real decision
At 2kWh you are buying a system, not an appliance. A typical trailer without air conditioning uses 600 to 900Wh a day, so 2kWh is two or three days. The moment you want to run longer, or add a heater, or cover a house through an outage, you are adding batteries.
That is where the three diverge sharply. Jackery takes five Battery Pack 2000 Plus v2 units to reach 12kWh. EcoFlow reaches 10kWh. Anker's C2000 Gen 2 takes a single BP2000 pack and stops at 4kWh.
Anker is not being careless here. Their answer to bigger needs is to move you to the F3800, which starts at 3,840Wh and scales to 53.8kWh, far past anything Jackery or EcoFlow offer at this tier. It is a different product ladder, not a worse one. But it does mean that if you buy a C2000 Gen 2 expecting to grow, you will hit the ceiling quickly and the next step is a new station rather than another battery.
Where Anker clearly wins
Two things, and both are real.
Idle efficiency. A published 9W idle draw is excellent and almost nobody else quotes the figure. Over a week of standby in a camper that is roughly 1.5kWh you do not lose, which at this capacity is most of a day.
Alternator charging built into the story. 800W of alternator charging is a headline feature rather than an afterthought. Jackery's equivalent is the separate 600W DC-DC alternator charger, which works well but is another box and another purchase.
Where EcoFlow clearly wins
The DELTA 3 Max Plus is the most powerful unit in this group at 3,000W rated and 6,000W surge, and the per-circuit output priority in the app is genuinely useful for home backup: you decide what keeps running as the battery drops. Jackery's Priority Routing does the same job with less granularity.
EcoFlow also has the fastest charge in the group at 0 to 80% in 43 minutes on the Max Plus.
Where Jackery wins
Price at the entry point, and the expansion ceiling at the top. The Explorer 2000 v2 at $798.99 is the cheapest route to 2kWh from any of the three, and it is quiet at under 30dB with excellent charge retention for a unit that sits over winter.
Step up to the HomePower 2000 Plus v2 and you get the 12kWh ceiling, which is three times what the Anker allows and enough to cover a genuine multi-day outage without changing platforms.
How to choose
- Cheapest way into 2kWh, no plans to grow: Explorer 2000 v2.
- You will add batteries: HomePower 2000 Plus v2, or EcoFlow Max Plus if you want the extra output.
- Long standby, lots of driving: Anker C2000 Gen 2, for the idle draw and alternator charging.
- You want to end up house-scale: skip this tier. Look at the HomePower 3600 Plus or Anker's F3800 ladder.
A note on prices. We quote our own Jackery prices because we keep them at or under the lowest price we can find online, and we recheck weekly. We deliberately do not quote EcoFlow or Anker prices. Both brands discount hard and run member-only and flash-sale pricing, and on the day we wrote this EcoFlow listed the same DELTA 3 Max under more than a dozen different prices at once. Check the current price yourself before you decide on cost.
FAQ
Is 2kWh enough for a weekend?
Comfortably, for a trailer running a 12V fridge, lights, a water pump and device charging. It is not enough for air conditioning or electric heat.
Do expansion batteries add output as well as capacity?
No. They add runtime only. The inverter rating stays the same, so what you can run at once does not change.
Can I mix brands?
No. Expansion batteries are proprietary to their own station family. Choosing a 2kWh station is choosing an ecosystem.
What about BLUETTI?
We stock that range too and it competes directly at this size. Browse the BLUETTI collection if you want a fourth option.
We sell Jackery and BLUETTI, not EcoFlow or Anker, so treat this as what it is: our read of the specs, written by people who sell one of the three. We have tried to be straight about where the other two win. If you want help sizing a system for your rig, talk to a parts person before you buy.