PTI designs and builds custom batteries.From design to production, Progressive Technologies customizes battery packs to our customers'​ specifications. Our specialty is medical applications as well as high-end OEM applications that require our level of expertise and quality. PTI is certified to ISO9001:2008 and ISO13485:2003. We also offer battery charging, conditioning, and analyzing services to our custom battery customers.In 2011 PTI was purchased by UPG (www.upgi.com) and changed its name to ProTechnologies. As a wholly owned subsidiary of UPG, PTI has retained the same management team with the same committment to excellence that has made Progressive Technologies a leader in the field of custom battery assembly.