totally none laser related
just got myself and the wife a power bank for our mobiles, they are awesome little devices (although I got a big one)
it got me thinking, they only use the 18650 battery so nothing special. would you be able to buy just the electronics and make your own??
the battery only outputs 3.7v so im guessing theres some form of dc-dc convertor to take it to 5v and then just a couple of usb connectors.
anyone seen anything of interest on the web??
http://www.ebay.co.uk/itm/1112528493...84.m1497.l2649
http://www.ebay.co.uk/itm/1910929897...84.m1497.l2649