# BYD unveils Haohan, a 14.5 MWh battery storage unit built on a 2,710 Ah Blade cell

Canonical page: https://technooptimist.io/stories/byd-unveils-haohan-a-14-5-mwh-battery-storage-unit-built-on-a-2-710-ah-097e3aa0
Date: 18 Sep 2025
About: [BYD](https://technooptimist.io/companies/byd.md) · [Haohan / MC Cube grid storage](https://technooptimist.io/energy/byd-grid-storage.md)
Original source: https://www.ess-news.com/2025/09/19/byd-unveils-worlds-largest-14-5-mwh-dc-energy-storage-system/

At an expo in Shenzhen BYD launched Haohan, a DC battery block of at least 14.5 MWh, against an industry norm of 6–7 MWh per unit. It uses a 2,710 Ah Blade cell, about three times a conventional storage cell, and fits 233 kWh per cubic metre. BYD says a 1 GWh plant needs half as many units, a third less land and 76% fewer cells.

## Key facts

- 10 MWh fits in a standard 20-foot container; cells take 52% of system volume.
- Claimed cycle life over 10,000 cycles; BYD claims 70% lower failure rates and maintenance costs.
- Paired GC Flux grid-forming inverter, 2.5–10 MW, 99.35% peak efficiency.
- BYD claims 21.7% lower levelized storage cost; all figures are the company's own.

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