I've been using the ISDT-SC-608 chargers for a year now and they've been superb, firmware is updated on a regular basis by isdt so if you get the small adaptor you can keep up to date. The reason I got them was mainly for the size, they're tiny. The only down side is it doesn't come with any cables, it's not a big problem really as you normally need to adapt what you get with a charger anyway.
They have 4 versions available
http://www.isdt.co/category/product
This is type I use.
http://www.ebay.co.uk/itm/iSDT-SC-60...3D122513569763