Dr Sai Shivareddy

speaker

363 appearances 1 recordings 1 series first heard Feb 2026 last heard 17 Feb

Dr Sai Shivareddy’s voice in public audio — every appearance, attributed to the second.

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Recordings per month over the last 12 months — 1 in all, peaking in Feb 2026 with 1.

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Not Your Father’s Data Center · Dynamic Power Solutions for the Future of Energy Storage · 17 Feb 2026 podcast

So if you start with what you have today in those big UPS systems that had lead, they took like eight hours to charge, not eight minutes.

They could discharge in eight minutes.

Well, my discharge was an eight minute window.

That's right.

But the recharge times of lead acid is like overnight, right?

Eight hours, whatever.

So you can't do very much with that UPS system if you took eight hours to recharge it.

So depending on how you design it, you have redundancy there and you put very many of those units to make one subject a little bit and the other one's not, right?

Correct.

Yeah, yeah.

So just to give you an order of scale here.

So lead acid has energy stored per unit volume of around 20 watt hours, 20 to 40 watt hours.

Lithium ion has 200 to 400 watt hours per liter.

Okay.

So a factor of 10.

For every 10 of those... Yeah.

Lithium ion, traditional lithium ion has this higher energy density, but it comes with the increased energy stored per unit volume problems.

That is, how do you manage for the thermal... It's hotter.

It is hotter, exactly.

Yeah.

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