BTI Replacement 3 cell battery for HP Probook 430 G4 430 G5 440 G4 440 G5 450 G4 450 G5 455 G4 455 G5 470 G5 / HP MT20 MT21 replacing OEM part numbers RR03XL 851610-850 851477-421 851610-855 RR03048XL-PR // 11.4V 3930mAh 45Wh

Battery Technology, Inc. (BTI) is a global supplier of replacement batteries & AC power adapters for notebook computers; batteries for digital cameras, PDA’s and other mobile devices and batteries for APC?UPS systems. With production facilities in California and Hong Kong, BTI maintains an unparalleled level of product availability for customers in North America while forecasting and managing the timely delivery of finished goods worldwide.nnBTI specializes in the design, manufacturing and distribution of rechargeable batteries and power related products. Our Research & Development team consists of experienced engineers and technicians who release an average of 75 new notebook computer battery models each year. BTI has made a significant investment in custom circuit design and has circuit board level SMT production capabilities. Extensive knowledge and training in rechargeable lithium ion & lithium polymer battery development, combined with the use of UL certified components, has enabled BTI to develop a safe and reliable line of power products.