Dec 14, 2020

GEORGE TOWN, Grand Cayman, Dec 14, 2020 (GLOBE NEWSWIRE) -- O2Micro ® International Limited (NASDAQ Global

Select Market: OIIM), a global leader in the design, development and marketing of high-performance integrated circuits and

solutions, today announced the grant of a patent for a system and method for controlling battery current.

O2Micro was issued 25 claims under US patent US 10,348,101 B2 for the invention of a system and method for controlling battery current.

This patent applies to a battery system comprised of multiple battery packs, voltage sense circuitry, control circuitry, control switch

and current regulation circuitry. This system understands the unique attributes of each battery pack and monitors both current and

charging voltage in real time to safely charge and balance battery packs, improve performance and preserve longevity of the battery

cells in both conventional and harsh environments.

"This invention enables safe and efficient charging, flexible battery pack pre-conditioning, pack balancing and hot-swap capability to

many cordless applications," said Dr. Guoxing Li, VP of Advanced Technology, O2Micro. "This technology will allow cordless devices

ranging from battery powered garden tools, power tools and cordless vacuums to personal transportation, industrial, sustainable

energy storage, and medical devices to operate longer and charge more efficiently without adversely affecting battery longevity. It

also supports hot swap and preconditioning capabilities for next generation applications."

About O2Micro:

Founded in April 1995, O2Micro develops and markets innovative power management components for the Computer, Consumer,

Industrial and Automotive markets. Products include Backlighting and Battery Management.

O2Micro, the O2Micro logo, and combinations thereof are registered trademarks of O2Micro. All other trademarks or registered

trademarks are the property of their respective owners.

Statements made in this release that are not historical, including statements regarding O2Micro's or management's intentions,

hopes, beliefs, expectations, representations, projections, plans or predictions of the future, are forward-looking statements within

the meaning of the Private Securities Litigation Reform Act of 1995. Such statements involve risks and uncertainties that may cause

actual results to differ materially from those set forth in these statements. Factors that could cause actual results to differ materially

include risks and uncertainties such as reduced demand for products of electronic equipment manufacturers which include

O2Micro's products due to adverse economic conditions in general or specifically affecting O2Micro's markets, technical difficulties

and delays in the developments process, and errors in the products. You are also referred to the Form F-1 in connection with the

company's initial public offering in August 2000, Form F-3 in connection with the company's public offering in November 2001, and

the annual reports on Form 20-F, which identify important risk factors that could cause actual results to differ from those contained in

the forward-looking statements. The company assumes no obligation to update or revise any forward-looking information, whether

as a result of new information, future events or otherwise.

Contact Information:

O2Micro Daniel Meyberg

Investor Relations


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