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72 SMT007 MAGAZINE I APRIL 2019 Interview by Nolan Johnson I-CONNECT007 David Yeung, co-founder and CEO of Lion- rock Batteries, discusses previous projects— including smartwatch straps—and his collabo- ration with the Nano and Advanced Materials Institute (NAMI) in Hong Kong on wearable, flexible battery technology at CES 2019. Nolan Johnson: I'm here with David Yeung from Lionrock Batteries at the South Plaza tent at CES 2019 in Las Vegas. David, could you tell us a little bit about you and what your company does? David Yeung: I have been in the wearable indus- tries for a few years. Before this project, I ran a smartwatch strap project attempting to include some functions and battery power within the flexible watchstrap part itself. During that course, I discovered flexible battery back- ground technology being developed by the NAMI. I have engaged with them on research and development to refine the flexible battery. The project concluded in 2016, and then we started Lionrock Batteries in 2017 to commer- cialize this technology, which I think was amazing. Johnson: Where is Lionrock located? Yeung: Hong Kong, as is the NAMI. Johnson: Can you tell me a little bit about this battery technology? Yeung: It is a nanofiber structure battery, which is very reliable, durable, and highly porous; thus, you practically avoid the battery from being short-circuited. If we deform it, fold it, or cut it, the battery remains safe. That's a main feature of the battery. It's so safe that we can make it deformed and bendable, so it's a flex- ible battery. Johnson: What are the specifications for this battery? Yeung: It can charge and recharge 1,000 times with very high energy of retention. Johnson: And you have a couple of examples of that battery here in front of us where the battery is embedded in a plastic rubber watch- band like you would use for a smartwatch. If I Lionrock Delivers Foldable, Bendable, Industrial-grade Battery Technology David Leung dicusses Hong Kong-based Lionrock's foldable battery technology at CES in Las Vegas.

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