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BLUETTI Apex 300 Portable Power Station, 2,764.8Wh

Home or RV backup that needs 240V and room to expand

The Apex 300 stores 2,764.8Wh of LFP and delivers 3,840W at 120V or 240V from one unit. Its 0 ms UPS applies to two outlets in 240V mode only, the supplied cable charges at 1,800W, and USB or 12V outputs need the Hub D1. The manual lists it at about 83.78 lb.

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Published specifications

  • Manual: 2,764.8Wh LiFePO4 (51.2V, 54Ah); model Apex 300
  • Manual: 3,840W; 4x 5-20R, TT-30R, 14-50R; 120V or 240V
  • Manual: UPS 0 ms on two outlets at 240V; 20 ms otherwise
  • Manual: 1,800W on 15A cable; 3,840W with optional P050A cable
  • Manual: 2x solar 12-60V, 20A, 1,200W each
  • Manual: 20.67 x 12.87 x 12.6 in, about 83.78 lb; up to 6 B300K

Fit and limits

Strengths

  • 120V or 240V output from a single unit, up to 3,840W
  • Expands to 19,353.6Wh with six B300K batteries
  • Detailed US manual on UPS outlets, ECO timing and charging cables

Caveats

  • No USB or 12V outputs without the separately sold Hub D1
  • Fast charging needs optional cables and possibly electrical work
  • 0 ms UPS only on two outlets in 240V mode

An AC-only core unit: USB and 12V outputs need the Hub D1

The Apex 300 is BLUETTI's 2,764.8Wh lithium iron phosphate power station; the manual's specification table names the model Apex 300. Its port overview shows only AC outlets, AC inputs, two DC inputs, a battery expansion port and a grounding terminal. The manual's DC output table carries the note that a Hub D1 is required, and the listing presents Hub D1 as an add-on for 12V loads.

That matters if you expected to charge phones or run a 12V fridge straight from the unit. In the box the manual lists the Apex 300, a 5.91 ft AC charging cable, a car charging cable, an M5 grounding screw, and the manual and warranty card. The solar charging cable, lead-acid cable, EV charging cable and the P050A fast-charging cables are optional.

3,840W at 120V, or split 120V/240V from one unit

A voltage selector switches the outlets between 120V and 240V output, and the manual says switching cuts off AC output. At 120V the four NEMA 5-20R outlets give 20A each, the TT-30R 30A and 3,600W, and the 14-50R up to 3,840W. At 240V the TT-30R drops to 16A, and each pair of 5-20R outlets is limited to 1,920W.

Power Lifting Mode, off by default, runs pure resistive loads rated 3,840W to 7,680W such as kettles and heaters, but the manual says the device will run below its rated power. Two or three units can be joined through BLUETTI's Hub A1 for 7,680W or 11,520W.

UPS: 0 ms on two outlets, 20 ms on the rest

The listing bullet says 0 ms UPS while its feature field says 10 ms or less. The manual says 0 ms switching applies only when the selector is set to 240V, the unit is connected through the 15A AC input, and essential loads are on the two left AC outlets. In 120V mode those outlets, like the others, switch in 20 ms.

The manual also says the UPS is not for data servers or workstations that need a high-performance UPS. AC-ECO and DC-ECO modes are on by default and shut outputs off after four hours at 10W or less on AC; the manual says to disable ECO for devices under 60W and for lights and refrigerators.

Charging: 1,800W on the supplied cable, 3,840W only with extras

The supplied cable charges at 15A, with the manual rating the AC charging port at 1,800W including bypass and the default grid current at 12A. The advertised 80% in about 45 minutes and 3,840W charging need the P050A input and an optional NEMA TT-30P or L14-50P to P050A cable; currents above 15A need the L14-50P cable.

For that high-current setup the manual recommends a 60A two-pole overcurrent device upstream and a licensed electrician to confirm the home circuit. Each of the two XT60 solar inputs accepts 12 to 60V, 20A and 1,200W. Car charging gives 96W from 12V sockets or 192W from 24V, with the engine running.

Expansion, weight and temperatures

Up to six B300K batteries connect for 19,353.6Wh; the manual recommends wall-mounting two or more, says B300 and B300S packs also work but should not be mixed, and notes the P090D cable is sold separately. The manual gives the unit's weight as about 83.78 lb, while the Amazon table says 66.1 lb, so plan for the heavier figure.

Charging is rated 32°F to 104°F, discharging -4°F to 104°F, IP20. For storage the manual says charge to 40 to 60%, power off, keep below 95°F for storage over a month, and fully cycle every three months. Its grounding terminal takes a minimum 8AWG conductor per the manual's overview note.

Warranty and app

Amazon's warranty field says 60 months. The manual pages and product-page lines we read do not state the warranty term or registration conditions, so confirm them with BLUETTI before relying on the listing figure.

The BLUETTI app sets charging mode, UPS mode (Backup, Time of Use, Self-consumption, Custom) and grid input current. The manual's tips say to recharge promptly if charge falls below 5%.

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Primary sources

  1. BLUETTI Apex 300 Home Battery Backup product page
  2. BLUETTI support page for the Apex 300
  3. BLUETTI Apex 300 user manual PDF (US English)

Primary sources checked .

Compare with

Side-by-side pages, this model next to: BLUETTI Elite 30 V2 Portable Power Station, 288Wh, Anker SOLIX F3000 Portable Power Station (A1782), 3,072Wh.

Keep comparing

Use the Watt Ready product index to compare other models, or read the full buying guide for category-level advice.