I have two ecomoto chargers, one from the Maxx and one from DROID x. I can't figure out which one is which anymore. One charger says "skn5004a 10354-0403532" and the other "skn5004a 11287-0403532". I've been using both chargers on the Maxx hoping to find a hint on which one is from stock, but they both seem to work perfectly. Therefore, is it bad if I've been charging my Maxx with a different charger? Does it affect my battery in any way?