The Yoshino B4000 SST is one of the first consumer portable power stations to ship with solid-state battery technology in place of conventional lithium-ion or LiFePO4 cells. Solid-state cells use a solid electrolyte instead of the liquid electrolyte found in standard lithium batteries, which delivers two real-world ad…
The Yoshino B4000 SST is one of the first consumer portable power stations to ship with solid-state battery technology in place of conventional lithium-ion or LiFePO4 cells. Solid-state cells use a solid electrolyte instead of the liquid electrolyte found in standard lithium batteries, which delivers two real-world advantages: roughly twice the energy density per pound of battery (so the unit is dramatically lighter for its capacity), and significantly improved thermal stability (much harder to enter thermal runaway).
The B4000 SST delivers a 4,000 Wh peak / 2,611 Wh continuous battery package with 4,000 W of pure sine wave AC output (8,000 W surge), enough to power most household appliances simultaneously — including high-draw items like microwaves, electric kettles and full-size power tools. The unit weighs noticeably less than a comparable LiFePO4 power station of similar capacity, making it more practical to move around the house, garage, RV or job site.
Charging is fast: up to 1,800 W from a wall outlet recharges the unit in roughly 1.5 hours, and the integrated MPPT solar controller accepts up to 1,000 W of solar input. Outputs cover 6× pure sine wave AC, 100 W USB-C PD, USB-A QC, a 12 V car port and a 30 A RV-style outlet. Yoshino backs the unit with a 5-year limited warranty.
Advantages: lighter, safer thermal profile vs. lithium-ion
Warranty: 5-year limited
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Frequently Asked Questions
How long will this power station run my appliances?
Run time depends on appliance wattage. Divide the unit’s usable Wh by your device’s wattage for an approximate run time. Refer to the product details for exact specs.
Can I charge it with solar panels?
Most modern power stations support solar input. Compatible solar input voltage and connector type are listed in the product specs.
Is the battery replaceable?
This depends on the model. Replaceable battery packs are noted in the product details when available.
Every order ships from our United States warehouse, usually within 2–4 business days. Large items travel by freight carrier; you receive the tracking link by email and the carrier contacts you to book the delivery slot.
You can return an item within 90 days of delivery, with no restocking fee. Read the full conditions in our refund policy and shipping policy.
This product comes with a 2-year manufacturer warranty from the date of delivery, covering manufacturing defects. How to make a warranty claim.
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Delivered with liftgate offloading
4.9 / 5.0 Customer Score
Based on 7 customer reviews
Customer Reviews & Ratings
Real verified feedback from equipment operators, homeowners, and contractors across the USA.
Item arrived securely packaged within 3 business days via tracked freight. The finish and materials are noticeably higher grade than high-street retail alternatives.
Hello George M., thank you for sharing your experience with AKASHOP! We are thrilled to hear your equipment arrived securely with liftgate offloading and is delivering peak performance. Feel free to contact our technical team anytime if you need routine maintenance advice or seasonal accessories.
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Mark J.✓ Verified Buyer
Chicago, IL·Verified Purchase • Liftgate Delivery
✔ Recommends this product
Very pleased with this purchase
Matches the description and photos perfectly. Easy setup and works like a charm. Customer service was responsive and helpful when I inquired about tracking details.
Excellent generator service with fast tracked delivery and very professional support staff. Excellent customer service definitely. Handled our power backup needs without a hitch.
Fort Worth, TX·Verified Purchase • Liftgate Delivery
✔ Recommends this product
Lifesaver during major storm power cuts
Powered our whole house including central heating, refrigerator, freezer, and lighting circuits. The dual-fuel feature is great—ran it on propane for 16 hours with remarkably low consumption.
Being able to start the generator from inside the house via remote fob in freezing rain is incredible. Handles motor startup surge on heavy power tools with zero bogging down.
San Antonio, TX·Verified Purchase • Liftgate Delivery
✔ Recommends this product
Heavy-duty build and surprisingly quiet operation
Built with a rugged tubular steel frame and large no-flat wheels for easy transport across gravel and grass. Digital telemetry display showing output wattage and fuel remaining is super helpful.
Delivery is free. This order is usually delivered in 2–4 business days (estimated Nov 5 – Nov 9). Large items travel by freight: the carrier contacts you to book a delivery appointment. Shipping policy
Can I return it?
Yes, within 90 days of delivery, with no restocking fee. Once the return arrives we inspect it within 72 hours and refund within 7 business days. Return policy
Is there a warranty?
Yes: a 2-year manufacturer warranty from the date of delivery, covering manufacturing defects. Warranty details
Is assembly included?
Products are delivered as the manufacturer ships them. Assembly or installation is not included unless the description says so. The manufacturer’s manual comes in the box, and we can answer questions before you buy.
How do I pay, and is it secure?
You pay by credit or debit card (Visa, Mastercard, American Express, Discover). Payments are processed by Stripe: your card details never reach our servers.
I have another question about this product
Email us before you buy and we reply within one business day: ask a question.
Yoshino B4000 SST Solid-State Portable Power Station
$3,051.49
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