What happened

Shares of U Power (UCAR 2.60%) are soaring in Friday's trading. The Chinese electric vehicle (EV) sourcing services' share price was up roughly 28% as of 2:30 p.m. ET, according to data from S&P Global Market Intelligence.

U Power published a press release yesterday announcing it had partnered with Quantum Solutions -- a Japan-based manufacturer of EVs. The agreement can potentially open up new market opportunities for U Power, and investors have responded by pushing heavily into the company's stock.

So what

Per the terms of the agreement, U Power has agreed to provide battery-swapping technologies, compatible cloud service platforms, and other products to Quantum Solutions. In exchange, the company will receive advisory services pertaining to the selection and development of suitable EV models to meet the needs of the Japanese market. The partnership announcement also says both companies plan to recruit additional partners in fields that include energy storage technologies, such as battery development.

Now what

Based on its recent partnership, U Power is gearing up for a much bigger role in the Japanese market. The announcement also suggests the company aims to move into new product categories.

U Power skyrocketed out of the gate on April 24, the day of its initial public offering (IPO). However, the company's share price plummeted following the hype-driven opening day. With a massive rally this week, the company's share price still trades down roughly 77% from market close on the day of its IPO.

U Power stock has been highly volatile across its relatively short history as a publicly traded company. While the stock could continue to serve up strong returns, there's not a lot of possibility on the performance outlook for its business. Investors should keep the potential for downside volatility in mind before buying too heavily into the rally.