Our power battery group is composed of Battery BU in Darfon Electronics Corp., Keyseg Aone Technology Corp. (Taiwan area) and Yesa technology Co., Ltd. (Shenzhen).



- Darfon Electronics Corp. (www.darfon.com.tw) is a public company in Taiwan area and established the Battery BU in 2009. We're the manufacturers of batteries for power tools and laptops and undertake OEM for the world-wide brand names.



- Keyseg Aone Technology Corp. (Taiwan area) is the R&D center of our group, working for lithium phosphate battery solutions and battery solutions recommended by A123 Systems. A123 Systems is the world first lithium phosphate battery supplier, while Keyseg is the designer and center of A123 battery solutions and prototypes.



- Yesa technology Co., Ltd. (www.yesa.com.hk) is for sales promotion and offers battery solution in Shenzhen and provides prototype support for battery projects.



-We have our professional R&D team and great productivity. Our products range from digital batteries to power battery packs, more than 2000 different models. What's more, every month we are releasing 5-6 latest battery models to catch up the fast developing market, which enables our distributors to grasp the market opportunities.



-Your best partner on OEM battery.



-We have our OEM battery team for more than 7 years. From the project evaluation and initiation to finally launch, we have formed a matured procedure. With the small scale production line of 1000pcs that is specially designed for our R&D team, we ensure the battery quality and business opportunity for our clients.

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