It is a good way to use a third manufacturer when purchasing a battery because there are usually many extra benefits. For instance, the replacement batteries are much lower in price than original batteries. Secondly, they usually offer a superior warranty, as they realize that in order to win the consumer's confidence, they must stand behind their product. Buy any replacement battery with a warranty less than one year. Batteries have been known to die early and warranty could leave you high and dry. http://www.batterylink.us