Battery Technology's family of products includes over 1000 products for notebook computers, cellular phones, camcorders, and the Zip Drive. BTI is one of the leading manufacturers of batteries and accessories for notebook computers. The company offers products for many manufacturers' notebook computers and cellular phones. By maintaining strict quality standards in production, as well as in sourcing, BTI is able to provide consistent, high capacity and durable batteries. The company offers this extra-battery for Canon camcorders: ES300V, ES4000, ES5000, ES6000, ES6500V, ES7000V, ES8000V, GL-1, XL-1, ULTURA.