Hi ! if anyone remember reading my last pose about my unpleasant experience with my 1st and 2nd N810 internet tablet, yes i am returning it for refund, however i still have a Mugen 3600 mAh battery for N810 in my hand that i cannot get rid off, since i ordered it from Hongkong, there's no way i can refund it, so i want to sell it to you guys who may be interested in it. i bought the battery 2 weeks ago for 79 USD, now i want to sell it for $30, yes the battery door is also included! if anyone is interested please leave a message or reply to the pose, so i can put it up on Ebay start from $0 for open bid. thanks!