vision spinner is an ego battery, and it has a "510" connector (as well as an ego thread)
lets ignore your mvp for now...
the spinner has its own usb charger, most likely supplied with the kit, and this is what you will be plugging into your wall-based usb charger (the one you want to buy)
as such, again, the spinner has its own charger with its own mah rate, which is what will regulate the charging.
the mvp has its own charging circuit built in too.
your job is to supply these two independant chargers with a supply capable of exceeding (in mah) their requirements. Whether the one you buy on ebay etc will do what it says on the label I cant guarantee of course:-)
the chargers mah requirements are also nothing to do with the battery designed mah capacity. a 60000000mah battery would charge from a 500mah charger, but it would take 300000 hours, if that is what they designed.
your spinners may be 1300ma, the charger supplied with these is normally 450mah.
so the charger needs to be plugged into something capable of supplying at least 450mah...and a pc usb port (not ideal, but anyway) supplies 500mah, so that is "ok".
now the 450mah charger is considered well-fed. and it will put 450mah into the battery each hour..so the battery should take around 2.5 or 3 hours to charge...your mvp at 2600mah would take around 5 or 6 hours.
If I now plug the 450mah charger into a 60000000mah wall socket adapter thing, it is "well-fed" and will take 2.5 to 3hours to put 450mah per hour into your 1300mah vision spinner.
its like that.
My knowledge of such things is a little rusty, combined with my fear of damaging some new expensive kit I needed some sound reassurance!
