<ul><li>Google has reached a milestone of having over 100 million Lithium-ion (Li-ion) cells deployed in battery packs across its global data center fleet.</li><li>The transition from lead-acid batteries to Li-ion batteries has allowed Google to reduce the number of batteries required by one-quarter, significantly reducing battery waste.</li><li>Google has made safety a core principle in the design of its Li-ion battery backup units (BBUs), subjecting them to rigorous flame safety testing.</li><li>The Li-ion BBUs, along with a distributed UPS architecture, have improved power availability, efficiency, and lifespan of data centers, while also reducing intermediate points of failure.</li></ul>

How we got to 100 million cells in our global Li-ion rack battery fleet

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