A company called Microsoft made a new kind of battery that uses less lithium, which is a metal used in many batteries today. Lithium can be expensive and sometimes cause fires. Tesla's boss, Elon Musk, thinks it's interesting and might help make electric cars cheaper for people to buy. Read from source...

- The title is misleading and clickbaity, using the word "intrigued" instead of a more neutral term like "aware" or "interested".
- The article spends too much time describing what Microsoft has done, but not enough on why it matters or how it compares to existing solutions.
- The article fails to mention any potential drawbacks or challenges of the new battery material, such as safety, performance, scalability, cost, etc.
- The article relies heavily on quotes from Microsoft and Tesla sources, but does not provide any independent analysis or expert opinion.
- The article mentions Musk's tweet, but does not explain what he meant by "interesting" or how it relates to his own goals or plans for Tesla.

Positive

Explanation: The article is discussing the development of a new battery material by Microsoft that uses 70% less lithium. This innovation could potentially reduce battery costs and risks of fire. Tesla CEO Elon Musk also responded positively to this news, calling it "interesting". Therefore, the sentiment of the article is positive as it highlights a promising development in the field of battery technology that could benefit both companies and their products.