Please try and follow me, cause I seem to be going round and round here with emails and all the advice I am getting.  I got the new chip square in the mail.  I opened the box and plugged it in.  It does not charge, no green lights just 2 yellow lights when you push the little round button.   I am going to change the cable that (USB) that came with the unit and see if it will charge the battery.  Carolann

@carolann - Sorry I wasn't more clear, and sorry for the runaround!  Specifically, what are you plugging the USB cord into (computer usb port, iPhone charger block, etc,)? Have you tried switching out this part of the equation? I charge mine using my iPhones charging block. 

I change the USB cord that came with the unit and it is now charging. 

@carolann - So glad to hear! I haven't seen the cord be the culprit yet! We don't currently have a way to ship just the USB cable. Did you just have an extra one laying around? 

Yep, I am a librarian by trade.  I have all kinds of cords!  It is the same one that came with a externial battery power pack.  Thanks, Carolann

@carolann - Sorry for the trouble, and good luck this weekend with your sales!