It’s crunch time at Tesla Inc, where Elon Musk is looking to crack the code for making better, cheaper batteries.
The electric-vehicle maker is recruiting Chinese and Korean materials suppliers to help lower the cost and boost the energy of its newest battery cells, even as the company struggles with battery-related performance and production issues that have helped delay the launch of its futuristic Cybertruck, according to people familiar with the plans.
Tesla has tapped China’s Ningbo Ronbay New Energy and Suzhou Dongshan Precision Manufacturing to help trim…