BYD launches new Blade-based home battery: Battery-Box HVB

At this year’s The Smarter E trade fair, BYD Energy Storage introduced a new home battery system known as Battery-Box HVB, or high voltage Blade. The residential battery marks the fourth generation of its home storage systems first introduced in 2015. 

The system incorporates BYD’s Blade Battery technology, previously used in its electric vehicles, and is designed to offer higher energy density than earlier models.

The system remains modular, in the stacked cabinet format used in BYD’s HVS and HVM products. The HVB starts at 5.9 kWh with two battery modules and goes to 29.6 kWh with 10 modules stacked. Three can be used in parallel for a maximum capacity of 89.07 kWh.

The system can deliver 25.6 kW (at 50 A max) with a peak output of 50.18 kW (at 98A for 15) seconds.

One 2.97 kWh module weighs 27.3 kg, and is IP55 rated.

HVB delivers significant gains in energy density, with gravimetric energy density rising to 108.8 Wh/kg, a 49.9% increase over the previous HVM system, while volumetric energy density rises to 162.88 Wh/L, a 139.7% improvement.

BYD claimed it holds the top spot in Germany for residential energy storage products and is in the top three in Europe, with more than 12 GWh shipped globally.

The headline change is the use of the Blade Battery format, a lithium iron phosphate (LFP) cell design developed by BYD. It is noted for its mechanical stability and thermal behaviour, and the move brings this format into BYD’s residential storage segment for the first time. It may also help BYD streamline production across its EV and energy divisions.

No pricing or availability was mentioned, but BYD’s energy storage products are already widely sold in Europe, especially in Germany. It’s likely the HVB will target that market initially.

A comprehensive data sheet provided by BYD is below:

HVS and HVM upgrade for 2025

BYD also announced that the HVS and HVM systems were being upgraded with new branding: HVS+ (or HVS Plus) and HVM+ (or HVM Plus).

While the design and core battery technology remain the same, the BCU has been updated to now be the same as the HVB. BYD said the system for each was upgraded to a one-click configuration, and its associated app was also upgraded.