This cable is for your SE7EN battery charger. ¬†Plug this bad boy into the wall and then plug it into your charger and just like that you will have a charging battery. ¬†Your charger should have come with one of these, so most likely this will be acting as a replacement due to some unfortunate circumstances. ¬†Either way, it is here to save the day.
*This is not the charger itself. ¬†It is just the cord for it.