BST is a professional manufacturer dedicated to producing high and stable quality laptop batteries&adapter for replacement. Possessing an independent R&D group, advanced manufacturing factory, professional sales team and aftersales service group, the company is a full-service vendor with complete development, production, sales and service. Our laptop batteries own perfect over-charge, over-discharge, over-temperature etc basic protection functions and double protection performance. Our replacement batteries are completely compatible with those famous brands. Our products have received CE, RoHS certification. Product performance is stable, secure and reliable. By means of powerful R&D group, we could launch 15 new models each month. We also provide brand design, package box design, sticker design and production etc value-added service to our customers.