How to add a RTC battery!

Hi guys,

If you want to add RTC battery, please check the info below!

connector model : Molex 53261-0271.

http://www.molex.com/molex/products/datasheet.jsp?part=active/0532610271_PCB_HEADERS.xml#partdetail

3V Battery like this

https://www.ebay.com/itm/394753998251?itmmeta=01J20Z5KKYNA6BXNFWJWX7XXSV&hash=item5be92bfdab:g:rAMAAOSwsHFmYRzI&itmprp=enc%3AAQAJAAAA4MzZbyOevbH3raNi%2BO83fueIJKxukc2aasXjM2af0Mw1TadjyuJ%2Bs7PcJrDPnwK2hnaOsalm2NpkooxCZN3ApG3Q9856vJsTSQcMmOk%2FHW%2F7AHDpietT%2BsxnFbuoiLqqWqgFhQnekmcOFm2pcuJAYBqibmnKMxsOTShq0hTr1%2FFsec%2BCQsy%2FJqqC0GkL8CCSk8qHNhSLszA1Pb%2BU3X6bZAi%2BBZwaYP%2Fa14ILCGpZvZJ7fWQAdsmVuRIFoeiAfmq2zV7t0RPEujaOxkPZpcpaaluJmhpaskiu%2FbKYtpfdKtfK%7Ctkp%3ABFBMiLqWn5Bk