Do the amplifiers come with battery chargers?
Yes. The SoniVox(tm) waistband amp includes a constant-current charger which will charge the batteries in about 7-10 hours. The BoomVox(tm) wireless amp has a built in charger. This charger will charge the 12v gel cell battery, and trickle charge one 9v battery. Note: Servox is a trademark of the Servox company in Germany. Griffin Laboratories is not affiliated with Servox or the Servox batteries.