Power-Sonic is a battery brand (headquartered in San Diego, California, USA, with additional offices/distribution in the UK and elsewhere) that designs and specifies sealed lead-acid (SLA/AGM) and lithium batteries, but the physical manufacturing of most of its products takes place in factories in Asia, primarily China, with some product lines also produced in Taiwan and Vietnam.
Like most major battery brands sold in Western markets, Power-Sonic operates on a design-and-source model rather than owning all of its own manufacturing plants. The company engineers and tests its products to its own specifications and quality standards, then contracts with manufacturing partners overseas—largely in mainland China—to produce the actual cells and finished battery packs. This is a common arrangement in the battery industry because it allows companies to leverage established lead-acid and lithium-ion production infrastructure, economies of scale, and raw material supply chains that are heavily concentrated in East Asia.
After manufacturing, batteries are shipped to Power-Sonic's distribution centers in North America, Europe, and other regions, where they undergo quality control checks before being sold to distributors, retailers, and OEM customers. The company markets its batteries for use in applications such as UPS systems, alarm and security systems, mobility scooters, solar/renewable energy storage, marine equipment, and other backup power needs.
Because exact factory locations and sourcing arrangements can change over time as companies shift suppliers or open new facilities, anyone needing precise, up-to-date information on where a specific Power-Sonic product is manufactured should check the country-of-origin markings on the battery label or packaging, or contact Power-Sonic directly or consult their official website/spec sheets, since labeling requirements typically mandate disclosure of the country of manufacture.