i currently have an mvp 2.0 and ill be getting an ipv mini 2. The mvp, as you all know, you cant change the battery when its dead, its disposable basically, whereas the ipv2 you can pull out the battery. now, this maybe a stupid question, but can you charge the battery thats in the ipv2 mini by plugging it into a mini usb like my mvp or will i need a speicific battery charger and need like 3 or 4 batteries?