The verdict, in one paragraph
Goodman publishes 148.0 locked-rotor amps for the 5-ton model of its GLXS4B condenser — about 34 kilowatts at 230 volts in the instant the compressor starts. The largest system on this site publishes 12,000 watts. So the honest answer to “which home battery can run a 5-ton central AC” is: none of them, as shipped. Fit a soft starter — a soft starter that publishes a 70% startup reduction on systems up to 6 tons — and the inrush drops to roughly 44 amps, about 10 kilowatts, which an EcoFlow DELTA Pro Ultra (10.8kW published surge) or a paired Anker SOLIX F3800 Plus (12,000W) can meet. After that the constraint stops being watts and becomes watt-hours: Goodman's published 23.9 rated-load amps is about 5,500 running watts, so a 6,144Wh battery is roughly an hour of continuous cooling. Buy the soft starter first. It is the cheapest part of this entire problem and nothing else works without it.
The published figures for a 5-ton condenser
| Figure | Published value | What it means for a battery |
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| LRA — locked rotor amps | 148.0 A | About 34 kW of inrush at 230 V. The number that stops everything |
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| RLA — rated load amps | 23.9 A | About 5,500 W sustained. The number that sets your runtime |
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| MCA — minimum circuit ampacity | 32.4 A | A circuit-sizing figure, not a consumption figure |
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| Max fuse or breaker | 50 A | Why this is a 240V hardwired circuit, never a plug |
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| Supply | 208/230 V, single phase (197-253 V) | Native split-phase output is required |
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| Condenser fan motor | 1.3 A | Small, but it runs whenever the compressor does |
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Goodman's published specifications for the 5-ton A6010A model of the GLXS4B line, cited under Sources. The watt conversions in the third column are ours — amps multiplied by 230 volts — not manufacturer claims. Your own condenser's data plate carries its own LRA and RLA, and those are the figures to use.
Why the consumer wattage charts do not answer this
Champion's generator wattage chart — the reference most of this site is built on for appliance figures — lists central air conditioning at 2 ton, 3 ton and 4 ton, and stops there. There is no 5-ton row. Its 4-ton entry is 4,000 to 5,000 running watts and 6,500 to 8,000 starting watts.
That omission is informative rather than careless. Those starting-watt figures are what a generator needs to deliver, and generator sizing tables assume the machine can briefly exceed its rating. A battery inverter cannot: it has a hard electronic limit and it shuts down at it. A 5-ton condenser's true locked-rotor inrush — 148 amps, published on the data sheet — is four times the 8,000-watt figure a consumer chart would suggest for the size below it.
This is the single most common way the question goes wrong. People size a battery against a wattage chart, buy a 6,000W unit, and discover that the compressor will not start at all. Starting watts versus running watts explains the general case; central air is its most extreme example.
What each system can actually do
| System | Published continuous | Published surge | Starts a 5-ton unsoftened? | With a soft starter? |
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| Anker F3800 Plus + Double Power Hub | 12,000 W | Not published separately | No | Yes, with headroom |
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| EcoFlow DELTA Pro Ultra | 7,200 W | 10.8 kW | No | Yes |
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| Anker SOLIX F3800 Plus | 6,000 W | Not published separately | No | Marginal — no room for other loads |
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| BLUETTI Apex 300 | 3,840 W | 7,680 W lifting | No | No — below the running draw |
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| A 5-ton condenser needs | About 6,000 W with the blower | About 34 kW unsoftened | — | About 10 kW softened |
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Continuous and surge figures are each manufacturer's published specifications, cited under Sources. The bottom row is our arithmetic from Goodman's published amps and the listings' published reduction percentages, and it is an estimate of a range rather than a guaranteed figure. Live prices sit inside the buy buttons above, each with the date it was last refreshed.
The soft starter is the whole article
Two manufacturers publish the same claim in nearly the same words. The SoftStart Home listing states it “Reduces Startup Power by 70%” and covers “Up to 6 Tons (72,000 BTUs)”, explicitly “Works with Generators, RVs & Solar”. Micro-Air publishes “up to 75%” for its residential EasyStart and says the part is “suitable for use with generators, inverters, and limited utility power sources”, covering “air conditioners and heat pumps up to 6 tons (72,000 BTUs)”.
Apply either figure to Goodman's published 148 A and the inrush lands somewhere between 37 and 44 amps — call it 8.5 to 10 kilowatts. That is the difference between a problem no battery on the market solves and a problem two systems on this page solve comfortably.
What it does not do is reduce the running current. The compressor still draws its rated load every minute it operates, so the soft starter buys you the start and changes nothing about the runtime. People routinely expect otherwise and are disappointed. Soft starter versus a bigger generator is the same trade on the fuel side.
Variable-speed condensers are a different question
If your outdoor unit is inverter-driven, most of this page does not apply to you. Rheem describes its 5-ton RA15AZ as “Inverter driven, variable speed, twin rotary compressor technology” with “cooling operation between 40% and 70% of capacity (ramping up to 100% when required)”. Goodman's GXV9S line is published as variable-speed across 2 to 5 tons.
A compressor that ramps has no locked-rotor event to soften, and one that spends most of its life between 40% and 70% of capacity is drawing far less than its nameplate maximum while it does so. Both things make a variable-speed system dramatically friendlier to a battery than a single-stage one — which is worth knowing before anybody fits a soft starter to a unit that does not need one.
The catch is that neither manufacturer publishes a locked-rotor figure for these units on the pages we read, so we cannot give you a number. Check your own data plate.
Then the problem becomes watt-hours
Solve the start and you immediately meet the second wall. At Goodman's published 23.9 rated-load amps plus an air handler blower, a 5-ton system in operation is roughly 6,000 watts. Against the capacities on this page:
- 6,144 Wh — about one hour of continuous compressor operation.
- 7,680 Wh — a little over an hour.
- 3,840 Wh — under forty minutes, if it could run it at all, which it cannot.
Our arithmetic from the published capacities and the published rated load, before conversion losses.
Those numbers look bleak and they are worse than reality, because an air conditioner cycles. A unit satisfying a thermostat in a reasonably insulated house may run thirty to fifty percent of the hour rather than all of it, which multiplies the figures above by two or three. How much power an air conditioner uses works duty cycle through properly, and how much home battery you can stack covers what expansion actually buys.
Five things to do before you buy anything
- Read your own data plate. It is on the outdoor condenser and it states LRA, RLA, MCA and max fuse for your unit. The figures on this page are Goodman's for one model and yours will differ — how to read an appliance nameplate walks through it.
- Find out whether it is single-stage or variable-speed. This changes the answer more than any product choice does.
- Price the soft starter first. It is the smallest line item and the one that determines whether any of the others work.
- Confirm native 120/240V output. A condenser is a 240V hardwired load; a system that reaches 240V through an autotransformer is a weaker arrangement for it.
- Decide honestly whether you want this at all. Cooling is the most expensive thing you can ask a battery to do. Running a whole-house fan, keeping the refrigerator cold and moving air costs a fraction of it — how to stay cool without power is the cheaper plan, and for most households it is the right one.
What about a generator instead?
For central air specifically, a generator is the easier answer, and it is worth saying plainly on a page full of batteries. An engine-driven machine can be momentarily overloaded by a starting motor in a way an inverter cannot, it does not run out after an hour, and a standby unit sized for the whole house handles a 5-ton condenser without any of this arithmetic.
What it costs you is noise, fuel, maintenance, and a machine that cannot run indoors. Generator versus home battery is the full comparison, and what size standby generator you need covers sizing one for cooling.
The short version
A 5-ton condenser publishes 148 locked-rotor amps — about 34 kilowatts of inrush — and no home battery in this catalog comes near it. A soft starter with a published 70% reduction brings that to roughly 10 kilowatts, which an EcoFlow DELTA Pro Ultra at 10.8kW surge or a paired Anker SOLIX F3800 Plus at 12,000W can meet. Running it then costs about 6,000 watts, so expect an hour of continuous cooling per 6kWh of battery, stretched by duty cycle. Buy the soft starter first, read your own data plate second, and be honest with yourself about whether cooling a house from a battery is the purchase you actually want.
