battery inconsistency is probably the biggest issue with the 901's. ive had ones that light too easy, and ones that "stick" like yours is. puffing in and out on the battery while the atomizer is off is the best way i found to improve them(it just works them in a bit), but they may never work as well as some of the other batteries. ive kept some of those aside as backup batteries. you dont really need more than 3 in a rotation. i do generally like the electronic batteries better. the new em-901 seems to combine 901 atomizer performance with 401 battery performance. im liking it right now...