+ 2 for
www.hangtimes.com all the info you will ever need about batteries from a guy
who is an expert all in one convenient place and all the accessories too. You can use the std. charge switch with the adapter cord. I also use the RCEXL kill switch around $15 from a guy on here. A123 cells are the way to go over the Life batteries tower sells. Once you use them you will wonder why you waited so long.