BLUETTI Apex 300: how long it runs

What it runs

• Average fridge26 h70.4 W
• Modem + router3.2 days11 W
• 4 LED bulbs43.5 h34 W
• CPAP, humidifier on2.3 days22 W
• Laptop33.6 h50 W
• Starlink Standard24.7 h75 W
• TV, 55 inch20.3 h96 W
• Electric blanket19.6 h100 W
• Microwave2.1 h1,100 W

Each device on its own: 2,765 Wh × 0.85 ÷ (watts + 20 W own draw). Several at once: add the watts, or use the planner.

Every number, with sources

Runtime at steady loads

Load	Runtime
50 W	33.6 h
100 W	19.6 h
200 W	10.7 h
500 W	4.5 h
1,000 W	2.3 h
1,500 W	1.5 h

2,765 Wh × 0.85 ÷ (load + 20 W).

Devices, one at a time

Device	Draw	Runtime
Modem + router (NRDC)	11 W	3.2 days
4 LED bulbs (Philips)	34 W	43.5 h
CPAP, humidifier on (ResMed)	22 W	2.3 days
Laptop (Virginia Tech)	50 W	33.6 h
Starlink Standard (Starlink)	75 W	24.7 h
TV, 55 inch (ENERGY STAR)	96 W	20.3 h
Electric blanket (Penn State)	100 W	19.6 h
Microwave (Penn State)	1,100 W	2.1 h

Each on its own. Several at once: add the watts, or use the calculator.

Fridges

Fridge	Average	Runtime
Efficient 18 cu ft (ENERGY STAR)	42 W	37.9 h
Average US fridge (EIA)	70.4 W	26 h
Large 26 cu ft (ENERGY STAR)	80.8 W	23.3 h

From the specs

CPAP users: follow your doctor’s and the device maker’s advice on backup power.

Motors and solar

BLUETTI lists no surge rating: only a 7,680 W Power Lifting mode for resistive loads. Some fridges need two to three times their running power to start (Anker); its 3,840 W continuous output covers a typical fridge start (about 900 W), but check bigger motors like pumps and AC units. Own draw: about 20 W (manual), included in every runtime here.

Solar: up to 2,400 W, about 1.5 sun hours to full by our math.

Add-ons from BLUETTI

Extra battery

• 

  BLUETTI B300K Expansion Battery

  5,530 Wh in total with one

  Adds 2,765 Wh · average fridge: 2.2 days

  $1,199

  Check price at BLUETTI for the BLUETTI B300K Expansion BatteryPaid link
• 

  BLUETTI B500K Expansion Battery

  7,885 Wh in total with one

  Adds 5,120 Wh · average fridge: 3.1 days

  $1,999

  Check price at BLUETTI for the BLUETTI B500K Expansion BatteryPaid link

Battery numbers in a table

Battery	Adds	Total with one	Average fridge	Price	Store
BLUETTI B300K Expansion Battery	2,765 Wh	5,530 Wh	2.2 days	$1,199	Check price for the BLUETTI B300K Expansion BatteryPaid link
BLUETTI B500K Expansion Battery	5,120 Wh	7,885 Wh	3.1 days	$1,999	Check price for the BLUETTI B500K Expansion BatteryPaid link

BLUETTI lists these for the Apex 300. Fridge time: total Wh × 0.85 ÷ (70.4 W + 20 W own draw). Prices: BLUETTI’s US store, Oct 23.

Solar panels

• 

  BLUETTI SP100L Solar Panel

  36.9 h sun hours to full

  100 W · 10.9 lb

  $249

  Check price at BLUETTI for the BLUETTI SP100L Solar PanelPaid link
• 

  BLUETTI SP200L Solar Panel

  18.4 h sun hours to full

  200 W · 17.2 lb

  $399Pre-order · ships Oct 29

  Check price at BLUETTI for the BLUETTI SP200L Solar PanelPaid link
• 

  BLUETTI 350W Solar Panel

  10.5 h sun hours to full

  350 W · 32.4 lb

  $649

  Check price at BLUETTI for the BLUETTI 350W Solar PanelPaid link
• 

  BLUETTI SORA 500 Solar Panel

  7.4 h sun hours to full

  500 W · 28.4 lb

  $849

  Check price at BLUETTI for the BLUETTI SORA 500 Solar PanelPaid link

Sun hours to full with one panel: 2,765 Wh ÷ (0.75 × the panel’s watts, up to the 1,200 W one input takes). The Apex 300 manual limits current to 8.2 A at low input voltages, so the SP200L (10.8 A short-circuit current) can charge slower than shown.

Panel numbers in a table

Panel	Rated	Weight	Price	Sun hours	Store
BLUETTI SP100L Solar Panel	100 W	10.9 lb	$249	36.9 h	Check price for the BLUETTI SP100L Solar PanelPaid link
BLUETTI SP200L Solar Panel	200 W	17.2 lb	$399 (ships Oct 29)	18.4 h	Check price for the BLUETTI SP200L Solar PanelPaid link
BLUETTI 350W Solar Panel	350 W	32.4 lb	$649	10.5 h	Check price for the BLUETTI 350W Solar PanelPaid link
BLUETTI SORA 500 Solar Panel	500 W	28.4 lb	$849	7.4 h	Check price for the BLUETTI SORA 500 Solar PanelPaid link

Sun hours to full with one panel: 2,765 Wh ÷ (0.75 × the panel’s watts, up to the 1,200 W one input takes). The Apex 300 manual limits current to 8.2 A at low input voltages, so the SP200L (10.8 A short-circuit current) can charge slower than shown.

BLUETTI’s panels have MC4 plugs; connect them with BLUETTI’s solar charging cable for this station’s input. All panels side by side: solar panels for power stations.

Nearest in size

Quick answers