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Earlier this week at the Smarter E Europe trade exhibition, BYD Energy Storage debuted its fourth-generation residential battery, the Battery-Box HVB.
Combining proven EV blade-cell chemistry from the automaker with a modular cabinet design, the new high-voltage Blade system generates up to 29.6 kWh per stack and a constant output of 25.6 kW.
Key Features and Performance
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Modular Capacity: Systems start at 5.9 kWh (two 2.95 kWh modules) and scale to 29.6 kWh per cabinet; three cabinets in parallel provide up to 89.07 kWh total.
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High-Power Output: Continuous discharge at 25.6 kW (50 A) and 30 kW peak (98 A for 15 s) supports whole-house backup under heavy load.
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Blade Cell Advantage: BYD’s lithium-iron-phosphate Blade cells boost volumetric density by 15 percent over conventional LFP packs and resist thermal runaway, enhancing safety and lifespan (6,000 cycles at 80 percent DoD).
BYD repurposes its Super e-Platform EV innovations such as thin-prismatic Blade cells and advanced battery-management electronics, in the HVB. This mirrors the company’s 1 MW Megawatt Flash chargers that top up EVs with 400 km range in five minutes. This cross-pollination ensures fast-response power delivery and grid-stabilization services, positioning homes as mini energy hubs.
Expected Market Rollout
Analysts at Bloomberg Intelligence forecast modular home batteries like the HVB could capture 25 percent of the residential energy-storage market by 2030, driven by grid reliability concerns and declining battery costs.
BYD plans first deliveries in China in Q3 2025, followed by rollouts in key European markets (Germany, Italy, and the Nordics) and Southeast Asia by year-end.
