










Yoshino B4000 Solid-State Portable Power Station - 4000W | 2611Wh
- Industry-Leading Li-NCM Solid-State Battery - Compact and High-Density
- Unmatched Power for Home Use - 2611Wh Capacity at 4000W Rated Output
- Fast Charging Capability– 80% in Only 90 Minutes (1800W AC)
- Long Battery Life - Charge & Discharge 4000+ Cycles to 80% Capacity
- Functional in Extreme Temperatures - Reliable Operation at -0.4℉
- Never Run Out of Power - 20Ms UPS for A Reliable 24/7 Emergency Power Supply

Powered by advanced Li-NCM solid-state batteries, the Yoshino B4000 SST offers an energy density of up to 280Wh/kg—twice that of LiFePO4 batteries—delivering stable, reliable power in a more compact and lightweight form.
With a massive 2611Wh capacity and a weight density of 104Wh/kg, the Yoshino B4000 SST is 33% smaller than the industry standard, making it the world’s most compact portable power station. Supporting up to 1C charge and discharge, the battery offers over 4,000 cycles at 90% DOD, ensuring exceptional performance and durability.


Safer, more efficient power anywhere, anytime with the next generation of GaN tech. Yoshino B4000 SST achieves an astonishing 96% conversion efficiency.


Get more peace of mind, day and night with the Yoshino B4000 SST. The intelligent battery management system (BMS) delivers the highest level of safety by efficiently managing voltage and running temperature.
Say goodbye to long wait times with the powerful 1800W of charging input.
Charge to 80% in 90 Mins!
Other Portable Power Stations can take up to 4 Hours!


Save up to $2,600 in electricity bills over 10 years of use by powering the Yoshino B4000 SST with three SP200 solar panels.
Built for extreme conditions, the Yoshino B4000 SST operates flawlessly in temperatures ranging from -0.4℉ to 140℉. Starting instantly in the cold without preheating like gas generators, it discharges 18% more than other power stations at 23~41℉, making it a more reliable power solution in cold environments.


Count on the Yoshino B4000 SST to power your essential devices during emergency power outages such as hurricanes, earthquakes, and other catastrophic events with 20ms UPS for a reliable 24/7 power supply.
Shhhhhh! Enjoy the peace and quiet of Yoshino B4000 SST compared to noisy traditional power generators. Sustainable energy from solar panels saves you money and means less noise pollution wherever you use it.


Through the Yoshino app, you can easily control and set up your power station remotely, making your life incredibly convenient with just a few taps on your phone.
Check your battery status anytime, anywhere, and stay informed with real-time monitoring about your device's power levels no matter where you are.


Effortlessly turn on or off the output power and stop powering fully charged appliances from anywhere. Experience smart living with just a touch.
Monitor and adjust input power to suit different methods. When using AC charging, choose between Fast Mode, Smart Mode and Eco Mode for various charging environments, ensuring optimal power management to meet your needs.

Stay powered up and ready for anything. Indoors, outdoors, day-to-day, and emergency power outages, Yoshino B4000 SST offers the power you need.




































Stay powered up and ready for anything. Indoors, outdoors, day-to-day, and emergency power outages, Yoshino B4000 SST offers the power you need.

What’s in the Box
- B4000 SST Portable Power Station
- AC Charging Cable (5.9ft / 1.8m)
- Cigarette Car Charging Cable (9.8ft / 3m)
- Solar Charging Cable MC4 to XT60 (9.8ft / 3m)
- DC5521 to Cigarette Car Female Output Cable (1.6ft / 0.5m)
- User Manual
FAQs
What kind of battery does the B4000 use?
The B4000 uses a solid-state Li-NCM 54A battery, which provides reliable and long-lasting power.
How can I calculate how long the B4000 can power my device for?
You can check the charging time shown on the B4000’s LCD Screen. This can help you estimate the charging time of most appliances. For a more detailed calculation, see below:
You can calculate how long your device will last when powered by the B4000, by taking into account the limits imposed by the B4000's depth of discharge (95%) and inverter efficiency rate (90%).
(Power Station Capacity × Depth of Discharge × Inverter Efficiency) ÷ Device Rated Power
So for example, a 60W CPAP machine hooked up to the B4000:
(2611 Wh × 0.95 × 0.9) ÷ 60W = 37.21
So, in this case, the B4000 can power the CPAP machine for almost 37.21 hours.
How can I calculate how long the B4000 can power my device for?
You can check the charging time shown on the B4000’s LCD Screen. This can help you estimate the charging time of most appliances. For a more detailed calculation, see below:You can calculate how long your device will last when powered by the B4000, by taking into account the limits imposed by the B4000's depth of discharge (95%) and inverter efficiency rate (90%).(Power Station Capacity × Depth of Discharge × Inverter Efficiency) ÷ Device Rated Power So for example, a 60W CPAP machine hooked up to the B4000:(2611 Wh × 0.95 × 0.9) ÷ 60W = 37.21So, in this case, the B4000 can power the CPAP machine for almost 37.21 hours.
Can the B4000 SST charge and discharge at the same time?
Yes, the B4000 SST can charge and discharge at the same time.
Does the B4000 SST have cooling fan(s)?
Yes, the B4000 SST has fan(s) that will automatically turn on to keep the unit from overheating.
How do I know if the product is charging?
When the product is charging, the charging indicator icon will flash, and the remaining time will be shown on the LCD screen.
How do I clean the product?
Use a soft dry towel to wipe gently across all surfaces.
How do I store the product?
If your portable power station is not going to be used for extended periods of time, power off the unit and disconnect the AC adapter from the outlet. Store it in a safe dry place with a temperature of 32-104°F / 0-40°C and humidity within 90%. Every 3-6 months charge the product to at least 80% to protect its battery life.
This product is rated 4.7 of 5.0 stars.
It has received 6 reviews.
This product is rated 4.7 of 5.0 stars.
It has received 6 reviews.