... to use16) Used to charge MP3,MP4, digital camera, standard battery or electronic devices.We also provide 3.7V, 4.2V ... , 8.4V, 11.1V, 12.6V, 14.8V, 16.8V travel battery charger. The MOQ each is 500 units.Paypal is welcome ... . Interchangeable plug adaptor battery charger 5V 12V 24V 3.7V 4.2V 7.4V ...