Compared across 3 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.
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The Yoshino B330 is a small portable power station built around a solid-state battery instead of lithium-ion or LiFePO4. That makes it lighter than most rivals at about 9.9 lbs, and the battery is rated for 4,000 cycles to 80 percent. It delivers 330W continuous and 500W peak through a pure sine wave inverter, with 241Wh of capacity and eight ports including a 100W USB-C PD output. It suits campers, tailgaters and desk or emergency backup for phones, laptops, lights and small fans, but it will not run a kettle, microwave or space heater. Against lithium-ion stations of similar capacity it trades total watt-hours for weight and safety, and the bundle adds a 100W solar panel that most rivals sell separately.
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Lowest price we've seen: $450.90 on Nov 9 at Lowe's. Tracked across 3 stores since Nov 9.
Owners of the Yoshino B330 tend to praise its low weight and solid-state battery, and reviewers note it handles laptops, phones and small fans without trouble. The common complaints are the modest capacity and wattage, which rule out high-draw appliances, and the slow 20W USB-C port.
The Yoshino K3SP11 is a portable power station with a 241Wh solid-state battery. The battery is described by the maker as safer, more compact and lighter than lithium-ion or LiFePO4. It is rated for 4,000 cycles to 80% capacity, which is 11+ years of everyday use. The unit weighs 9.9 lbs.
It delivers 330W of continuous pure sine wave AC power, with a 500W peak. It has 8 ports: two 120V AC outlets, two 12V DC ports, two USB-A (5V) ports, one 20W USB-C port, and one USB-C PD port with 100W output and 60W input. A control panel is available through a Wi-Fi or Bluetooth app, and the unit has a high-powered LED light.
The set includes the B330 SST power station and an SP100 solar panel, along with cables and an adapter for recharging from a wall outlet, a car, or the solar panel.
