So long as the tip from the charger's cord fits the slot in the phone, any brand should work---even generic. Enabling "Auto Keyguard" should prevent the phone from accidentally powering up in your pocket. So would a carrying case or belt holster (pouch.) I recently purchased charger that uses batteries for emergencies on the go---rechargeables, too. It's pretty good.
Opera/9.80 (J2ME/MIDP; Opera Mini/4.2.14613/938; U; en) Presto/2.2.0