EC21 Buying Leads Catalogs - l ion battery http://importer.ec21.com/buy_leads/l ion battery.html Buy MA3/MP4http://www.ec21.com/offer_detail/Buy_MA3_MP4--3161724.htmlbattery-type lithium-ion battery technology parameters: maximum output power (mW) ( L) 5 + (R) 5 frequency range of 20 20080308