Yoshino B2000 SST Review: Solid-State Battery Tech Arrives

The Yoshino B2000 SST is unlike anything else in this roundup. It’s the first consumer power station using solid-state battery technology — the same tech that’s expected to revolutionize electric vehicles. But is cutting-edge always better?

Key Specs at a Glance

• Capacity: 1,326Wh
• Output: 2,000W (3,000W surge)
• Weight: 31.3 lbs
• Charge Time: ~60 minutes (wall outlet)
• Battery Type: Solid-State Lithium

Who Is It For?

Early adopters who want the newest battery technology. Buyers who prioritize weight savings (31 lbs for 1,326Wh is remarkable). Tech enthusiasts who want to own the first solid-state power station.

What Makes Solid-State Different?

Traditional lithium batteries use liquid electrolytes. Solid-state batteries replace the liquid with a solid material, which provides several advantages:

• Higher energy density: More power in less space and weight
• Improved safety: No liquid electrolyte means lower fire risk
• Potentially longer life: Fewer degradation mechanisms

The B2000 SST achieves about 280Wh/kg energy density — roughly 2.5x what LiFePO4 achieves. That’s why it can pack 1,326Wh into just 31 lbs.

Impressive Weight-to-Capacity Ratio

At 31.3 lbs for 1,326Wh, the B2000 SST offers the best Wh-per-pound ratio of any power station in its class. For comparison:

• Yoshino B2000 SST: 42.4 Wh/lb
• Anker SOLIX C1000: 39.3 Wh/lb
• EcoFlow Delta 2: 37.9 Wh/lb
• Bluetti AC180: 32.6 Wh/lb

If portability matters and you need more than 1kWh, the weight savings are meaningful.

2,000W Output

The 2,000W continuous output beats most 1kWh-class competitors and matches units with significantly larger batteries. The 3,000W surge handles motor starts well. Combined with 11 output ports and a built-in wireless charging pad, the B2000 SST is well-equipped.

The Risk Factor

Solid-state battery technology is still relatively new in consumer products. Long-term cycle life data is limited. Yoshino as a brand doesn’t have the decade-plus track record of Jackery or EcoFlow. You’re essentially betting on new technology from a new company.

This doesn’t mean it’s unreliable — early reports are positive. But it’s a factor worth considering, especially at $999.

How It Compares

At $999, the B2000 SST costs more per watt-hour than LiFePO4 competitors. The VTOMAN FlashSpeed 1500 offers 1,548Wh for a similar price. The Anker SOLIX C1000 offers 1,056Wh for $699. You’re paying a premium for the solid-state technology and weight savings.

What Could Be Better

The $0.75/Wh price is higher than LiFePO4 alternatives. Long-term battery longevity is unproven. Yoshino’s brand and service infrastructure are still developing. The 1,326Wh capacity is oddly positioned — not quite in the 1kWh or 2kWh class.

The Bottom Line

The Yoshino B2000 SST is a fascinating product that points toward the future of portable power. The solid-state battery delivers real weight savings, and the 2,000W output punches above its weight. If you value portability and don’t mind being an early adopter, it’s worth considering. If you want proven technology at a lower price, stick with LiFePO4 units like the Anker SOLIX C1000 or EcoFlow DELTA 3 Plus.