Yoshino B4000 SST Review: A Solid State Power Station That Shines with New Battery Technology

The Lowdown

If you’re in the market for a professional-grade portable power station, the Yoshino B4000 SST is a great choice. With 4000W of output, it can handle almost anything thrown at it. The 2611 Wh of power is mind-blowing for its size and is backed by a 5-year warranty. The addition of the 30A travel trailer plug is excellent for campers who plan to be off-grid or need a portable backup for their trips. The small size of the B4000 SST makes it great for any trip, and it’s easy to carry and store.

Overall
5

Pros

New solid-state battery technology

Charges very quickly; The weight-to-power ratio is amazing

Plenty of included cables, including a female cigarette charger adapter

Fast recharge

Companion app is easy to use and manage the battery from

Cons

Yoshino is bringing a new solid-state battery technology to a new power station. Most of the power stations I have reviewed use LifePO4 battery technology, which does work great. Instead, the Yoshino B4000 SST uses Solid-State Lithium batteries, bringing a class-leading power-to-weight ratio. Long story short, this power station packs a big punch in a small package.

The Yoshino B4000 SST weighs 53.6 pounds and sports a mind-blowing 4000 Watts continuous with 6000 Watts peak pure sine wave power.

Its dimensions are 21.4″ long by 10.2 ” tall by 9.4″ wide, which is quite small for the 2611 WH of battery capacity and that much output. The box includes the power station, AC recharge adapter, cigarette car charging cable, solar charging cable (MC4 to XT60), DC5521 to cigarette car female output cable, and user manual. The cigarette car female output cable is the first I have seen included, and it is a welcome addition to this package.

Yoshino B4000 SST with included cables

The power station has handles on both ends, making it easy to carry. While it is somewhat heavy at just over 50 pounds, it is light compared to the performance. This is truly a portable power monster. It should easily fit almost anywhere it is used, and I was pleased to find that my camper storage compartment had plenty of room to hold the Yoshino B4000 SST.

The right side of the Yoshino B4000 SST

All of the Yoshino B4000 SST’s ports are on the front and back. The back side includes two 120V AC 20A outlets and a TT-30R camper outlet. There is also a circuit breaker next to the camper plug that needs to be turned on before using these outlets. The rear side also includes the AC charging port and a solar/car charging input.

There is also a fuse and Smart Link plug located on the back; the Smart Link is for adding extra batteries, making the storage capacity seem almost endless.

Yes, Yoshino has included enough power output to run a travel trailer! Of course, using the airconditioner will drastically shorten the charge’s life, but it will run everything.

The back side of the Yoshino B4000 SST

Charging is fast with the 1800W max of AC input and 600W max of solar input, and the batteries are rated at 2500 cycles to 80% capacity. I charged from 30% to 100% using the AC plug-in for a bit over 60 minutes. This is one of the quickest charging times I have seen on a large power station!

The front of the Yoshino B4000 SST houses the screen, power button, an LED light, and two 9v USB-A ports with 12W each, one 20W USB-C, and one 100W USB-C. Each bank of outputs has an on/off switch for better control. There are also two 12v DC ports.

The front of the Yoshino B4000 SST

I like the female cigarette charger adapter that is included. My large sprayer will make good use of this feature.

Female cigarette lighter cable is included with the Yoshino B4000 SST

The front light is a nice touch and should be handy while camping or during a power outage. The Wi-Fi button syncs the power station to the Yoshino app; be sure you have a 2.4 GHz Wi-Fi signal to get it paired the first time.

The lighht on the front of the Yoshino B4000 SST

The top of the Yoshino B4000 SST includes two wireless chargers. My tech class students could charge all their devices simultaneously while I took photos. They were amazed at how fast their devices were charging using a portable power station!

Using one of the two wireless chargers on the top of the Yoshino B4000 SST

The display is pretty straightforward; input and output levels are displayed, as well as battery level and time left to charge or power from current output use. It is bright and easy to read.

The Yoshino B4000 SST's LCD

The Yoshino app is easy to use and helps monitor all parts of the battery. All outputs can be seen being used and turning the output banks on and off. Battery temperature and capacity are easy to see. This is important to be able to manage power usage.

Yoshino B4000 SST app

Input levels can also be managed on the app, including charging times. Especially when using the Yoshino B4000 SST off-grid, these numbers are important while planning your power usage and charging.

Yoshino B4000 SST app

If you’re in the market for a professional-grade portable power station, the Yoshino B4000 SST is a great choice. With 4000W of output, it can handle almost anything thrown at it. The 2611 Wh of power is mind-blowing for its size and is backed by a 5-year warranty. The addition of the 30A travel trailer plug is excellent for campers who plan to be off-grid or need a portable backup for their trips. The small size of the B4000 SST makes it great for any trip, and it’s easy to carry and store.

If you need to be off-grid for an extended amount of time, the Yoshino B4000 SST can also be recharged using the optional solar panels the company offers.

We are about to move our travel trailer out to the woods for hunting season, and this power station will be a staple of our winter since we have no power available. I am excited to see where Yoshino takes this solid-state battery technology and how their products mature and develop; this is definitely a company to watch.

The Yoshino B4000 SST retails for $3,299 and is currently on sale for $2,799; it is available directly from the manufacturer and other retailers, including Amazon.

Source: Manufacturer supplied review sample

What I Like: New solid-state battery technology; Charges very quickly; The weight-to-power ratio is amazing; Plenty of included cables, including a female cigarette charger adapter; Fast recharge; Companion app is easy to use and manage the battery from; Can be charged via solar with the optional panels

What Needs Improvement: Nothing

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About the Author

Travis Ehrlich
Travis is a high school teacher and coach in a small South Texas town. His love for gadgets began at a very early age, and he has been a cross between a jock and a geek for most of his life. He has two boys and a wonderful wife who lets him be a gadget freak. He is a Mac convert and has drank the whole pitcher of Kool-Aid! He is also an avid guitar player and loves the outdoors, especially hunting with both a bow and rifle.

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