World-batteries

Although registered in the USA, the owner's actual name and location is hidden. The site also carries some of the hallmarks of Asian traders, and although it displays a number of credit card logos it accepts only Paypal, not a recommended choice of payment processor unless you are using Ebay and are covered by Paypal's buyer protection.

It gets a bad rating from me, rather than maybe a two-star, because it intentionally misleads by using a fake Verisign badge. That immediately suggests to me that I can't rely on anything else here.

You may also be interested to note that the site shares contact information with at least the following domains:

global-batteries.com
camera-battery.net
batteries-store.com
all-power-accessories.com
star-battery.com
laptop-battery.org
global-batteries.com
notebook-batteries.net
batteries-inc.com
electricbike.us.com
battery-pro.net
bargain-batteries.com
camcorder-battery.org
abatterypack.com
optionalbattery.com
notebook-laptop-batteries.com
odm-battery.com

There are many, many places to purchase batteries online, a few of which are very well established. I would personally look around further before making a decision to purchase if I were in the market for batteries. SiteJabber is a good place to look for recommendations.