What we measure
Capacity
Real vs rated Wh
Surge
Peak W validated
UPS mode
Switchover time
Solar input
W accepted
Runtime
vs requirement
Value
Wh per dollar
Full scoring methodology and weighting explained.
Read methodology →EcoFlow
DELTA Pro
Best expandable home backup system. 25kWh ceiling.
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EcoFlow
DELTA 3 Max
Best mid-range home backup. Top score under $800.
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EcoFlow
DELTA 2 Max
Polished 2kWh platform. Best ecosystem integration.
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EcoFlow
DELTA 3 Classic
Most affordable 1kWh LFP with UPS. Strong value play.
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Jackery
Explorer 2000 Plus
Highest surge at this price. Expandable to 24kWh.
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Jackery
Explorer 2000 v2
Lightest 2kWh in class. 41% lighter than competitors.
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Jackery
Explorer 1000 v2
Best value 1kWh LFP. Benchmark for compact class.
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Bluetti
AC200L
Best solar input in 2kWh class. 900W solar, UPS.
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Bluetti
AC300
Modular home system. Expandable to 12.3kWh.
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Anker SOLIX
F3800
Highest output portable system. 6000W + 240V.
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EcoFlow
DELTA 3 Plus
Most overlooked DELTA 3 model. X-Boost enables 2,200W from a 1,800W-rated unit, expandable to 5.1kWh.
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Bluetti
AC500
One of the most powerful portable power stations built. 5,000W continuous, expandable to 18.4kWh.
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VTOMAN
FlashSpeed 1500
Best value solar generator with UPS in the dataset. 1-hour recharge, expandable to 3,096Wh.
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Anker SOLIX
C2000 Gen 2
Anker's answer to the DELTA 2 Max — same capacity, UPS added in Gen 2, but a $200 premium over EcoFlow.
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EcoFlow
DELTA 3 Max Plus
Most powerful UPS-equipped generator under $1,000. 3,000W continuous handles loads the standard Max cannot.
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