Purchased Acer Aspire One ZG5 Battery (white) - 12-Cell. After being transfered to a very unpleasant woman, and being told that (Acer does not know what they are talking about when they say in an email to my IT Manager that the battery will not work on this model of the Acer Note book). Mundo states the battery is ok and will work on my notebook...They unpleasant women finally gives me an email address to get an RMA for the return of the battery. I Sent first email on 12/27/2010, no response...second email to RMA on 01/06/2011...no response...called Mundo and asked for the Manager and was transfer to the same unpleasant women who would not transfer me to a Manager...She indicated she had not recieved my emails, so I hung up after telling her I would send another email. I sent another on 01/11/2011...Today is February 2, 2011 still no response.