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For you and me, battery choice is a matter of AA, AAA — maybe C or D here and there. With an estimated $ 3.6 billion and Fitbit’s wearable start-up process, the process is a bit complicated.

In September, Y. it becomes The first company, the next Jane Battery maker, introduced a new silicon-based battery in the production of Sila Nanotechnology. Sila Power: Thick Battery Wipe has the ability to work with many new features with 33% less tracking than the previous model.

  • The battery comes with a Whoop 4.0 fitness tracker, which includes wrist straps, braces, leggings, and performance tops on the wrist, as well as pockets that hold the tracker.
  • They have started sending active devices in Sila. late September.

A.D. For Cilla, which raised more than $ 880 million in 2011, this is the start of a (really) big battery plans business. 2025.

We talked to WOP founder and CTO John Capodulupo about how the partnership with Silla Technologies came about.

This interview has been slightly modified and added for clarity.

How did the collaboration with Silas begin?

We arrived at Sila Nano and it was a great time for both of us. We were looking for the next generation battery. Silas had been developing their new technology for a few years, but they were ready to move on to mass production. About two and a half years ago, we reached out to them and said, “Let’s do it.”

Why is the sila battery so big for Wip?

Batteries are the largest volume in any wearer. There really isn’t much growth, maybe 2% to 3% more energy each year. For us, we want to make Whoop 4.0 smaller, so that it accommodates wrist sizes, looks stylish, but also allows things like Whoop Body, which makes it easier to wear in the body. We know that getting power to run everything is a big problem.

What encouragement did Silas have to get started?

Sila actually has a few Wahop users. They are excited about the product, and I think they see it as a strong signal for WOP’s potential and growth. From a commercial point of view, I think they are very happy.

Then there was the size and level of both companies. Sila has plans and ambitions to get into electric vehicles and to put batteries everywhere. But because those batteries are so much bigger than the batteries in WIP, it is impossible to unravel the mystery-triple material in those huge batteries one day. They wanted to show their product to the world, to make it work, and so on.

Looking for the next battery maker for 4.0 Have you looked at other companies besides Sila?

We’ve reviewed so many other partners, they may be doing better things, including traditional graphite cells, but it was for graphite. [Sila] What we wanted was a perfect combination of energy-boosting, cost-benefit analysis and people. They are a big company, but we still know that a startup, like Wow, and a very strong relationship between them, will serve every party.

What makes Sila’s approach different from other battery manufacturers?

Many other next-generation battery-technology developers are building their own factories to produce their own batteries. Silas is very unique in this regard, their chemistry is really, you can think of it as a drop for traditional chemistry. They do not produce the entire battery.

We can still work with the level one battery manufacturers we have worked with in the past, but instead Silla’s secret infusion gives us more energy density.

When evaluating something as important as a battery for both performance and safety, it is one thing to take risks with next-generation technology, but to take risks with next-generation technology. When added The next generation is a big jump in the production of batteries if the production line is not confirmed. I think Silas is right. We were able to work with Sila and our trusted battery manufacturer to produce the cells in that 4.0.

How does the new battery 4.0 tracker make it different from previous models?

First of all, it allowed us to reduce the size of the form. Whoop 4.0 is 3.0% lower than 3.0, but does not charge battery life. To do that: 1) Electrical engineering and embedded engineering, to reduce our basic energy consumption, but 2) just holding a lot of juice in the battery, basically – and where the sila goes.

But it was not just a reduction. Compared to 3.0, we have added a whole new set of 4.0. We have increased skin temperature. We have added a haptic alarm, so it vibrates properly, and the moving mechanical parts take up a lot of energy. We’ve added a lot of extra power hungry parts and new sensors in small format. We are using all that extra energy to help us do that without losing battery life.

Has working with Silla’s new technology completely damaged your production process or supply chain?

They themselves work with the battery provider. It was very good in terms of supply chain. That’s why we went with them. He said, “Hey, we are looking for cells with sila material inside. It’s like buying a normal cell from that manufacturer. From our point of view, that was great. We do not have to budget for material things and so on. There is only one source for us.