Battery doesn't charge on my newly purchased t500

[notismed]

when i discover my new t500 is completely out of battery the first time, i immediately plugged it in to charge. i notice it doesn't charge, if i doble click power management it recognizes the battery but it doens't chaqrge no matter what i do with the setting. (it was at )%



what i did was take out the battery and then put it back in, and it works. i thought maybe it's new, so it's in the break in period. it happened again today, it wouldn't charge. i had to pull the battery and put it back in in order to get get it to charge. is this a hardware problem? i would like to exchange it since i am still under the initial 30 days period. please advise, and thank you.