BLUETTI AC500
A modular 5,000 W power system: the AC500 inverter module takes B300S batteries of 3,072 Wh each, up to 18,432 Wh, with 10,000 W surge and up to 3,000 W of solar input.
- Best for whole-home backup
- Power station
- 3,072 Wh+
- 5,000 W
- Made by BLUETTI.
- Capacity: the AC500 holds no battery itself; it needs at least one 3,072 Wh B300S (or a B300K) and takes up to six B300S, 18,432 Wh in total.
- Output: 5,000 W continuous with two or more B300S (4,500 W with one), 10,000 W surge, through six AC outlets.
- Solar: up to 3,000 W; with AC charging at the same time up to 8,000 W of total input with two or more B300S.
- LiFePO4 cells rated for 3,500+ cycles to 80%. BLUETTI gives a 4-year warranty on the AC500 and the B300S.
Not tested by us
We have not tested the BLUETTI AC500. The figures on this page come from the sources listed at the end of the page, checked on 13 November 2026, and we do not show prices. "Best for" is based on what the maker says the product is designed for, not on our own tests.
Key figures
18,432 Wh
Maximum with six B300S
5,000 W
AC output with two or more B300S
3,000 W
Solar input
Specifications
Last checked on 13 November 2026. The grey text under each name explains what the value means. To see it next to other products, compare it in our comparison tool.
| Specification | Value |
|---|---|
| Storage | |
| CapacityHow much energy the battery stores. Bigger means longer runtime or more of your own solar power used later. | 3,072 Wh per B300S battery module (51.2 V, 60 Ah), 3,072 to 18,432 Wh with one to six modules. The AC500 inverter module has no battery of its own. BLUETTI's AC500 page gives the B300K as 2,764.8 Wh |
| Battery chemistryLFP (lithium iron phosphate) cells are known for long life and stable behaviour with heat. | Lithium iron phosphate (LiFePO4) |
| Cycle lifeHow many full charge and discharge cycles the cells are rated for before they hold less than the stated share of their original capacity. | 3,500+ cycles to 80% of original capacity, as listed for the B300S |
| ExpansionExtra battery units that add storage to the same system. | Up to six B300S (18,432 Wh) according to the manual. BLUETTI's AC500 page also says up to six B300K (16,588.8 Wh) in its text, up to four B300 in its spec list, and that B300S and B300K can be mixed, four packs in total, so the page does not agree with itself |
| Output | |
| AC output (continuous)The power it can deliver all the time. Add up the watts of what you want to run at once and stay below this. | 5,000 W in total with two or more B300S, 4,500 W with one B300S (with B300K: 3,000 W with one, 5,000 W with two or more). Six AC outlets: 5 × 230 V/16 A and 1 × 230 V/21 A, pure sine wave, 220-240 V, 50/60 Hz. BLUETTI notes the larger socket is built for 32 A so it copes with surge, and the rated 5,000 W current is not reached |
| AC output (surge)A short burst above the continuous rating, for appliances that draw more power when they start. | 10,000 W. Overload tolerance in the manual: 5,000 to 6,000 W for 2 minutes, 6,000 to 7,500 W for 5 seconds, 7,500 to 10,000 W for 500 ms |
| Power Lifting ModeA mode that runs some heating devices above the normal output rating. Only for devices that allow it. | Enabled in the BLUETTI app. Runs purely resistive heating loads up to 6,000 W while the rated output stays 5,000 W; only with the grid disconnected |
| USB-APorts for phones, tablets and small devices. | 2 ports at 5 V 3 A, plus 2 QC3.0 ports at 18 W maximum |
| USB-CPorts for laptops, phones and tablets. Power delivery up to 100 W can charge most laptops. | 2 ports, 100 W maximum each (PD 3.0) |
| Car outletA 12 V socket like the one in a car, for car accessories. | 1 outlet, 24 V 10 A (regulated); also a 12 V 30 A RV outlet |
| Wireless chargingA pad on the unit that charges a compatible phone without a cable. | 2 pads, 15 W maximum each |
| Charging | |
| AC chargingHow fast it charges from a wall socket. Higher means a shorter wait. | 5,000 W maximum with two or more B300S, 4,500 W with one B300S (176-253 V, 47-63 Hz, 23 A maximum) |
| Time to charge from the mainsHow long a full charge takes from a wall socket. | Not stated |
| Solar inputHow much solar panel power it accepts. A higher figure fills the battery faster on a sunny day. | 3,000 W maximum through two inputs of 1,500 W each, 12-150 V DC, 15 A. Third-party panels work if they have MC4 connectors and stay within those limits. With AC and solar together BLUETTI lists up to 6,000 W (one B300S) or 8,000 W (two or more) |
| Car chargingCharging from a car's 12 V or 24 V socket while driving. Slow, but useful on the road. | 12/24 V through the cigarette lighter port |
| Backup switchover (EPS)What happens when the grid fails. EPS means it takes over automatically. | 20 ms according to the manual. Four UPS modes in the app: Standard, Time Control, PV Priority and Customized. A grid-tied UPS must be installed by a qualified electrician |
| Pass-through chargingWhether it can power devices while it is itself being charged. | BLUETTI says it can charge and discharge at the same time |
| Solar and off-grid | |
| Works with solar panelsWhether you can charge it from solar panels. Yes means a built-in solar input or a compatible solar setup; read the detail for the voltage and power limits. | Yes: built-in solar input, 3,000 W maximum (two inputs of 1,500 W), 12-150 V DC, 15 A. |
| Off-grid useWhether the maker describes it running with no grid connection at all, for example in a cabin, van or off-grid home. Backup only means it covers power cuts but needs the grid the rest of the time. | Yes: runs devices from its battery modules with no mains connection and recharges from solar. |
| Housing and warranty | |
| Dimensions (L × W × D)Length, width and depth of the unit, so you can check that it fits the space it needs. | 520 × 325 × 358 mm for the inverter module. BLUETTI's page labels the order L × W × D, its manual L × W × H, so the height and depth are not certain |
| WeightMatters for lifting, wall mounting and moving it. | 30 kg for the inverter module, without batteries. BLUETTI's B300S page lists 36.1 kg and 520 × 320 × 266 mm for one B300S |
| Operating temperatureThe range it is rated to work in. Cold and heat can reduce performance. | Discharging and charging -20 to 40 °C; storage -25 to 40 °C in the manual (-20 to 40 °C on the page); working humidity 10 to 90%. Own use when on: 11 W with AC and DC off, 30 W with AC and DC on |
| Noise levelFan noise while working. | Not stated |
| Protection ratingIP ratings show protection from dust and water. IP55 and IP65 are rated for outdoor-style exposure; check the installation guidance. | Not stated |
| ConnectivityHow you monitor and control it, usually through an app. | Wi-Fi and Bluetooth with app control; over-the-air firmware updates through the app |
| CertificationsSafety and grid standards the maker says the product meets. | UL2743, UKCA, TELEC, RCM, FCC ID, CE |
| WarrantyThe period the maker covers. Read the terms: conditions and capacity guarantees differ. | 4 years for the AC500 and the B300S, 1 year for accessories |
How long will it run your devices?
Choose how many of each device you want to run at the same time. The wattages are typical figures, so check the label on your own devices.
| Device | Typical power | How many |
|---|---|---|
| 10 W | ||
| 10 W | ||
| 15 W | ||
| 60 W | ||
| 80 W | ||
| 80 W | ||
| 40 W | ||
| 1,000 W | ||
| 2,000 W | ||
| 1,000 W | ||
| W |
The estimate assumes 85% of the rated capacity is usable after conversion losses. BLUETTI does not state this figure, so we use a cautious assumption. Real running times vary with temperature, battery age and how each device draws power.
Compatible with
What BLUETTI says this product works with. Anything not listed here is not confirmed.
- Batteries
- B300S and B300K only; BLUETTI says other brands' batteries do not work. The AC500 does not work without at least one.
- Expansion cables
- The manual connects a B300S with the P150D cable and a B300 with the P150D to P090D cable.
- Solar panels
- 12-150 V, 1,500 W per input, MC4 connectors, 3,000 W in total.
- App
- Wi-Fi and Bluetooth monitoring and control in the BLUETTI app.
Rules where you live
A portable power station is not wired into your home, so it is simple to use almost anywhere. Connecting one to your home circuits to power the house is different, and the rules for that vary by country. See our country guides for the rules, incentives and prices where you live.
Strengths and things to check
Strengths
- Modular: 3,072 Wh up to 18,432 Wh
- 5,000 W continuous and 10,000 W surge
- 3,000 W solar input, up to 8,000 W with AC at the same time
- Can be tied to the home grid as a UPS (installed by an electrician)
- 4-year warranty on the AC500 and B300S
Worth checking before you buy
- Needs at least one B300S before it works
- Only 4,500 W output and charging with a single B300S
- Heavy: 30 kg for the inverter alone, 36.1 kg per B300S
- BLUETTI's page showed the inverter module as out of stock
- IP rating, noise and mains charging time are not stated
Change log
We record changes to this page here, so you can see when figures such as the warranty were last updated.
- 13 November 2026
- Page published. Warranty at publication: 4 years for the AC500 and B300S (BLUETTI page). BLUETTI's page showed the inverter module as out of stock.
Where this information comes from
We have not tested the AC500. Figures come from BLUETTI's AC500 Inverter Module Generator page (Tech Specs and FAQ), the AC500 user manual and BLUETTI's B300S and B300K pages, last checked on 13 November 2026. Dimensions and weight are for the inverter module alone unless a battery is named. Where BLUETTI's own pages disagree, we say so. A value that BLUETTI does not state is shown as not stated.
We do not show prices, because they change often and differ between sellers.
- Manufacturer BLUETTI AC500 user manual (EU, English)
- Manufacturer BLUETTI UK AC500 Inverter Module page, Tech Specs and FAQ
- Manufacturer BLUETTI UK B300S expansion battery page and specifications
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Common questions about BLUETTI AC500
Does the AC500 come with a battery?
No. BLUETTI sells the AC500 as an inverter module that needs at least one B300S or B300K battery to work. With two or more B300S it reaches its full 5,000 W.
What can it run?
5,000 W continuous with two or more B300S and 10,000 W surge, so large appliances such as air conditioners and power tools are within reach. Divide the battery capacity by a device's draw for a rough running time.
Is the AC500 the same as a home battery?
No. It is a modular power station that you plug devices into, although BLUETTI describes a grid-tied UPS set-up that a qualified electrician must install. An installed home battery is wired into your electrics by an electrician. See our guide to plug-in and installed home batteries.
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