On this pageSpecs Charge it, put it in a closet, and forget it until the power goes out Wiring it to a transfer switch for recurring outages, and your needs might grow For the RV or off-grid, charged mostly by solar Running 2 kW or more sustained near where you live or sleep Overnight medical or CPAP bedside backup

Jackery HomePower 3000vsDELTA 3 Ultra Plus (2026)

Two 3 kWh, 3,600 W, 120 V LiFePO4 units with identical nameplate specs — same capacity, same rated and surge output, same chemistry, same 5-year warranty. The differences that decide a purchase are almost all off the spec sheet: standby behavior, noise under load, expandability, solar headroom, and reliability. That’s where our reviews split them, and where the winner changes depending on who you are.

Jackery HomePower 3000

$1,699

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Prices and availability change frequently

EcoFlow DELTA 3 Ultra Plus

$1,449

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Prices and availability change frequently

Spec	Jackery HomePower 3000	EcoFlow DELTA 3 Ultra Plus
Capacity	3,072 Wh	3,072 Wh
Rated output	3,600 W	3,600 W
Surge output	7,200 W	7,200 W (X-Boost 4,600 W)
Weight	59.52 lbs	74.3 lbs
Chemistry	LiFePO4	LiFePO4
AC recharge time	2.2 hrs	1.48 hrs
Solar input max	1,000 W	1,600 W
Voltage	120 V only	120 V only
Expandable	No	Yes
UPS switchover	20 ms	10 ms
Warranty	5 yr	5 yr
Price	$1,699	$1,449
Price per Wh	$0.55	$0.47
AC ports	4× 20 A + 1× 30 A TT-30	4× 20 A + 1× 30 A TT-30
USB-C		1× 140 W, 2× 45 W
USB-A		1× 18 W
DC ports	2× 8 mm, 1× 12 V cig (10 A)	Anderson 30 A / 378 W, 1× 12 V cig (10 A / 126 W)

Blank cells indicate figures not recorded in our research, not that the feature is absent.

Charge it, put it in a closet, and forget it until the power goes out

Who it’s for: A homeowner who charges a unit, stores it off in a closet, and expects it to still be full when the grid drops months later. Rare outages, light essentials load like a fridge, Wi-Fi, and lights, with no daily cycling.
Why the HomePower wins: Its ZeroDrain design holds roughly 95% of charge after 12 months of storage, confirmed in our review. When a unit spends most of its life waiting, retention is the deciding factor, not headline specs. The LiFePO4 chemistry and 5-year warranty make a buy-and-forget unit defensible over a long ownership horizon.
Why the DELTA 3 Ultra Plus loses here: Our review documents a failure mode for rare-outage standby: one owner measured roughly 30 W of idle draw just to keep it on, which left only about 2 kWh practical for rare-outage standby and drove a return. For the rare-outage buyer who leaves it plugged in waiting, that overhead compounds; round-trip AC efficiency measured under 75% in the same owner’s testing. The review’s advice is to turn outputs off when idle, which defeats the set-and-forget premise.
Catch: Our review flags scattered AC-cutoff and error-code reports, some firmware-tied, with firmware not pushed automatically. For a set-and-forget unit, verify AC output under load inside your return window. This doesn’t flip the segment — standby retention dominates — but it lowers certainty slightly.

Wiring it to a transfer switch for recurring outages, and your needs might grow

Who it’s for: A homeowner wiring the unit through a manual transfer switch to cover a handful of 120 V circuits — fridge, networking, lighting, heating control — through repeated outage seasons, who may want more runtime later.
Why the DELTA 3 Ultra Plus wins: The fixed-vs-expandable split is decisive. It’s expandable; a single extra battery works out of the box, confirmed by owners, so a buyer whose backup needs grow has a path the HomePower can’t offer. Its Smart Output Priority auto-sheds non-essential outlets at a set battery threshold while the fridge stays on, a runtime-extender the HomePower lacks entirely. It also recharges faster: roughly 2 hours full, 89 minutes to 80% on AC, versus 2.2 hours. It switches over faster (10 ms UPS versus 20 ms), and costs $250 less ($1,449 versus $1,699, or $0.47 per Wh versus $0.55 per Wh).
Why the HomePower loses here: It is not expandable, full stop, confirmed by our review’s most-repeated warning. Our review reports only 1–2 hours of runtime on a multi-circuit transfer switch — it’s an essentials unit with a hard capacity wall.
Catch: The DELTA 3 Ultra Plus has a documented pass-through quirk — with grid AC and a load both present, outlets draw from grid pass-through and the battery won’t discharge on a schedule, and it does not support time-of-use scheduling. This kills peak-shaving or time-of-use arbitrage, but for outage backup (grid down, UPS handoff, then battery) it doesn’t bite. If your goal is bill arbitrage rather than backup, neither unit is clean and the DELTA 3 Ultra Plus needs external automation. The 11 kWh two-battery ceiling needs a Smart Extra Battery Expansion Adapter that owners report is hard to source — treat single-battery expansion as the shipped-ready reality.

For the RV or off-grid, charged mostly by solar

Who it’s for: An RV, truck-camper, or overlander running the unit off-grid, replenished mostly by solar, with mixed 120 V loads up to an RV air conditioner.
Why the DELTA 3 Ultra Plus wins: It takes 1,600 W of solar — double the HomePower’s 1,000 W — plus Self-Powered Mode for running on solar between configured thresholds, and expandability for multi-day trips. Just as important for an off-grid buyer: it uses standard solar connectors, whereas our review of the HomePower flags proprietary 8 mm connectors incompatible with standard MC4 or XT60 panels without adapters, effectively locking you into Jackery’s own SolarSaga line. The HomePower review is candid that its 1,000 W ceiling means a single panel won’t refill it in a day. Both have the 30 A TT-30 shore plug and both handle RV AC, so shore power and inverter are a wash — solar is the differentiator.
Why the HomePower loses here: The lower solar ceiling, proprietary-connector penalty, and lack of expandability make it the weaker off-grid choice. It is 15 lbs lighter (59.52 versus 74.3 lbs), which matters for hand-loading into a truck bed, and our review of the DELTA 3 Ultra Plus flags low wheel clearance that struggles on gravel and sand — so on loose terrain the wheels stop helping. But the HomePower has no wheels at all, the lower solar ceiling, and the proprietary-connector penalty, so it stays the runner-up rather than the pick for a solar-primary buyer.
Catch: The DELTA 3 Ultra Plus’s measured MPPT efficiency ran nearer 80% than the advertised 90% or higher, so size the array with that loss in mind. It’s still the stronger solar unit; the headline just overstates real intake. For the DELTA 3 Ultra Plus off-grid, consider pairing the EcoFlow 400W Portable Solar Panel or EcoFlow 500W Portable Solar Panel, both EcoFlow-native to the input. This is a recommendation, not a priced-in bundle — the $1,449 price and cost per Wh stand on the station alone.

Running 2 kW or more sustained near where you live or sleep

Who it’s for: A buyer running 2 kW or more sustained — space heaters, power tools, several appliances at once — in a studio, cabin, small shop, or anywhere noise near living or sleeping space matters.
Why the HomePower wins: Our review reports it stays quiet even near maximum load — you have to put your ear six inches away near max load to hear it — alongside a 42 dB idle figure and a top ranking in independent quiet testing. For a buyer whose whole use case is sustained high draw near where they live, that’s a decisive advantage.
Why the DELTA 3 Ultra Plus loses here: Its celebrated 25 dB rating is explicitly scoped to loads at or below 600 W. Our review documents that at maximum sustained load one bench test hit 60 dB, the loudest EcoFlow fan the reviewer had heard in a long time. For a buyer whose whole use case is sustained high draw near where they live, that’s a decisive flip toward the HomePower.
Catch: Below roughly 600 W this segment evaporates — both are quiet and the pick reverts to whatever the other deciding axis is. The HomePower’s edge is specifically the high-load quiet window.

Overnight medical or CPAP bedside backup

Who it’s for: A user backing up a CPAP or similar medical device at the bedside overnight, possibly multiple nights.
Why the DELTA 3 Ultra Plus wins (lower certainty): Both units clear the hard gates easily — both are pure-sine, and 3,072 Wh dwarfs a CPAP’s overnight need (our review of the HomePower measured 10 or more nights with the humidifier off, 3–4 with it on). When the hard gates tie, reliability outweighs everything else — including noise. The HomePower’s quiet bedside advantage runs into the one thing a medical buyer cannot tolerate: our review documents scattered reports of random AC-output cutoffs and error codes, some firmware-related, with firmware not pushed automatically. For convenience use that’s a footnote; for an unattended overnight medical device, a random-AC-cutoff pattern is exactly the failure mode medical criticality weighs above all else. The DELTA 3 Ultra Plus’s documented issues — idle drain, pass-through peak-shaving — don’t touch whether it will keep delivering all night: our review confirms a 10 ms UPS switchover and a seamless real-outage transition, with one owner reporting a fan and baby monitor that never skipped a beat.
Why the HomePower loses here: The scattered random-AC-cutoff and error-code reports in our review, even described as scattered and thin, are the failure mode the medical rule subordinates everything else to. The HomePower is the quieter bedside unit and has better standby retention — for non-critical nightstand backup it would be appealing — but the medical rule subordinates noise and standby to reliability.
Catch: The HomePower’s cutoff evidence is described in our review as scattered and thin, and most owners don’t hit it. A buyer who verifies AC output under load across several nights inside the return window could reasonably land on the quieter HomePower instead. The verdict leans DELTA 3 Ultra Plus on the reliability-above-all rule, but the margin is narrow — treat this as the lowest-certainty pick on the page.

True of both units — Both units are 120 V only. Neither runs a 240 V load, and neither can be paired into a 240 V split-phase system. If your loadout includes a well pump, central AC, an electric dryer, or genuine whole-home transfer-switch coverage, neither of these is your unit — that’s a hardware gate no setup reconciles. Both reviews point that buyer to a different class (EcoFlow’s DELTA Pro 3, Jackery’s Explorer 5000 Plus, or an Anker SOLIX F3000 via dual-unit hub). Everything below assumes a 120 V world.

The bottom line

The HomePower 3000 wins set-and-forget emergency closet backup on standby retention (95% charge after 12 months) and quiet operation under sustained high load (near-silent even near maximum load). The DELTA 3 Ultra Plus wins wired essentials backup (expandable, Smart Output Priority load-shedding, faster recharge, $250 less), RV and solar-first off-grid (1,600 W solar input versus 1,000 W, standard connectors versus proprietary, expandability), and overnight medical or CPAP bedside backup (10 ms UPS, seamless handoff, no random AC-cutoff reports — though this last pick carries lower certainty). The same HomePower design — fixed, quiet, retention-first — is an asset for the closet and a liability for the growing or solar-primary buyer. The same DELTA 3 Ultra Plus expandability, solar headroom, and faster-at-light-load behavior carry most segments, but its idle drain and fan-at-load flip the two segments built around storage and sustained loud loads.

Read the full Jackery HomePower 3000 review Read the full EcoFlow DELTA 3 Ultra Plus review