[img=100,75]http://www.on-electronic-cigarette.com/images/510-battery autosy.jpg[/img]Auto battery for 510-black--Description:Size: 65mm(L) X 9.2mm(D)Battery Power: 3.7V 180mAh Standard Manual Battery: around 220 puffsBattery charging cycles: 300 times charging colors:matte black(blue led)stainless(blue led)white(red led)Warranty: Battery and atomizer come with a 120 days warranty. That is 120 days from being delivered, not shipped. So it is a true 120 days warranty. Other things accept DOA (dead on arrival). If for any reason you are in need of help or support, please contact us freely.