BLUETTI Apex 300: Runtime & Specs

The BLUETTI Apex 300 is a 2,765 Wh LiFePO4 power station with 3,840 W of continuous AC output, including 240 V. It runs a typical full-size fridge for about 41 hours.

Capacity2,765 WhLiFePO4
Output3,840 Wsurge not published
Solar input2,400 W12–60 V
Weight83.8 lbexpands to 19,354 Wh

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How long will the Apex 300 run your appliances?

Nonstop runtime for one device at a time, using typical US wattages and 85% inverter efficiency. Devices marked ✕ can't run on this model.

Estimated runtime by appliance for the BLUETTI Apex 300
DeviceAvg drawRuntimeBar
LED light bulb9 W10.9 days
Phone charging10 W10.4 days
Wi-Fi router + modem15 W6.5 days
Laptop50 W47 hours
CPAP + humidifier30 W3.3 days
CPAP with heated humidifier + humidifier60 W39 hours
Starlink Standard90 W26 hours
TV100 W24 hours
Mini fridge29 W3.4 days
Refrigerator58 W41 hours
Chest freezer29 W3.4 days
Sump pump (1/3 HP)160 W15 hours
Sump pump (1/2 HP)210 W11 hours
Window AC225 W10 hours
Drip coffee maker1,000 W2.4 hours
Microwave1,500 W1.6 hours
Space heater750 W3.1 hours
Well pump33 W3 days

Surge? = this model has no published surge rating, so starting motors and compressors may or may not work. Fridges, freezers, pumps and AC units cycle on and off, so we use their average draw. Want a mix of devices on a schedule? Use the runtime calculator.

What the Apex 300 can't power

Every appliance in our wattage chart is within its output limits.

Solar charging time

Hours of good sun to charge from empty, assuming panels deliver 75% of their rating and one array per 1,200 W solar input.

PanelsPower inHours of sun
100 W of panels75 W37 hours
200 W of panels150 W18 hours
400 W of panels300 W9.2 hours
1,200 W of panels900 W3.1 hours
2,400 W of panels (split across inputs)1,800 W1.5 hours

Check panel voltage and wiring with the solar charging calculator.

Full specifications

Battery capacity2,765 Wh
Battery chemistryLiFePO4 (LFP)
Continuous AC output3,840 W
Surge (peak) outputNot published
Power Lifting (heating devices)7,680 W
AC voltage120V/240V
AC outlets6
USB-C ports0
USB-A ports0
12 V car outletNo
Max solar input2,400 W (1,200 W per input)
Solar voltage range12–60 V
Solar max current20 A
Max AC charging power3,840 W
AC charging time (maker claim)0–80% in 45 min (3,840W)
ExpandableYes, up to 19,354 Wh
UPS / EPS switchover20 ms
Cycle life6,000 cycles
Weight83.8 lb
Warranty5 years

Notes: 4x 5-20R, TT-30R, 14-50R (+P050A). No USB/12V on unit (Hub D1). 0 ms UPS only at 240V on set outlets. 3,840W AC via P050A, 1,800W via 15A inlet. 2x1,200W PV. 6x B300K max.

Specs from BLUETTI's published documents, as of September 2026. Found an error? Tell us.

Sources
  1. bluettipower.com/products/apex-300-home-battery-backup
  2. cdn.shopify.com/s/files/1/0550/5620/3836/files/Apex_300_User_Manual_US_E…
  3. bluettipower.com/pages/product-warranty-period

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Questions

How long will the BLUETTI Apex 300 run a refrigerator?
About 41 hours for a typical ENERGY STAR full-size fridge averaging 58 W, assuming 85% inverter efficiency. Older or larger fridges use more. Try your own numbers.
Can the BLUETTI Apex 300 run a microwave?
Yes. A typical 1,000 W microwave pulls about 1,500 W from the outlet, within its 3,840 W continuous output. A full battery gives about 1.6 hours of cooking.
How long does the BLUETTI Apex 300 take to charge?
BLUETTI's published charging claim: “0–80% in 45 min (3,840W)”. Max AC charging power is 3,840 W. With solar, it accepts up to 2,400 W (1,200 W per input). With 2,400 W of panels that's roughly 1.5 hours of good sun from empty.
Is the BLUETTI Apex 300 expandable?
Yes, up to 19,354 Wh with BLUETTI's extra batteries.
Does the BLUETTI Apex 300 work as a UPS?
BLUETTI lists a 20 ms switchover time, so it can keep devices like routers and computers running when the power drops. Check that your specific device tolerates the switch before relying on it for anything critical.