B4000 SST

B4000 SST

Solid-State Portable Power Station

Setting the bar for professional power stations. The B4000 doesn’t just deliver extremely high output, it does so with a class-leading power-to-weight ratio. Thanks to solid-state technology, it provides more power per pound than any other power station—and it’s safer, too. With 4,000 watts on tap, it’s perfect for home backup and even includes a 30-amp RV outlet for recreational use. And despite its capacity, it can charge from 0-80% in just over an hour.
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Solid-State Battery

Higher energy density and no flammable liquid electrolyte means more power in a smaller, safer package than traditional lithium-ion batteries.

4000W / 2611Wh

Rated for 4,000 watts with peak power of 6,000, the B4000 SST can run household appliances, desktop PCs, power tools, and more. And with 2,611 watt-hours of capacity, it’s the perfect backup power solution for your home during a blackout.

Fast Charging

Even with its extreme capacity, the B4000 SST fast-charges up to 80% in just over an hour and 100% within 1.5 hours using AC input. Using the 12V vehicle adapter, a full charge takes 12 hours, while charging with 600W solar power from optional Yoshino solar panels takes just 5.5 hours.

It’s All in the App

The Yoshino mobile app unlocks additional features of your power station. Monitor charge level, battery health, connected devices, and more.

Yoshino Power station and phone with app displayed

Power Through
the Storm

This power station works as an uninterruptible power supply (UPS) to automatically power your computer or other critical equipment during a blackout.

Ideal For

Smart Phone

186 times 12Wh


74 times 30Wh

LED Light Bulb

8.5 days 11W


45 times 50Wh


37 hours 60W

Household Fan

2.5 days 33W

42" TV

22 hours 100W

Full Size Refrigerator

14 hours 160W


4.5 hours 500W

Coffee Maker

2.2 hours 1000W


2 hours 1100W

Air Fryer

1.5 hours 1500W

Portable Cooler

3.5 days 25W


56 times 40Wh


15 hours 150W

Electric Griddle

1.8 hours 1200W

Mini Fridge

2.5 days 35W

Electric Oven

1.4 hours 1650W

Air Conditioner

1.2 hours 1800W

Angle Grinder

3.4 hours 660W

Electric Drill

1.9 hours 1200W

Electric Chainsaw

1.5 hours 1440W

Miter Saw

1.2 hours 1800W

Multiple Ways to Charge

AC Charge

1.5 hours1800W AC

12V Car Adaptor

22 hours120W

Solar Panel

(Optional)5.5 hours600W
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Tech Specs

  • Net Weight
    55.1 lb / 24.99 kg
  • Power
    4000 Watts (Rated); 6000 Watts (Peak)
  • WiFi & Bluetooth
  • Dimensions
    21.4 x 10.2 x 9.4 in (54.3 x 25.9 x 23.8 cm)
  • Cell
    SST Solid State Li-NCM 54Ah
  • Full Recharge Time
    1.5 Hours (1800W AC) 22 Hours (12V Car Adaptor), 5.5 Hours (600W Solar Panel)
  • In the Box
    AC Charging Cable, 12V Auto Adaptor DC5521 to XT60, Solar Charge Cable MC4 to XT60
  • Capacity
    2611 Wh
  • Cycles
    2500 cycles to 80% Capacity
  • RV 30A
  • Warranty
    36 months
ETL Listed

Every Yoshino portable power station comes with full ETL certification.