compatible with w300,z530,w880 etc
Alumimum case
Grade A battery and ic protector
high capability
minimum order:50pcs/model

BST-33 compatible with many models: 

 Z530 Z610 W300 W830 W850 W880 W888/w900  and so on.

various mobile phone battery(cell phone battery) for BL-4C,BL-5C,BL-5CA,BL-6C,BL-5B,BL-5X,BL-6X,BL-4B,BP-6M,BP-5M,BP-5L,BL-5F,BP-4L,BL-6P,BL-4CT,BP-5MT,BL-6F,

BT-60,BR-50,BT-60,BC-50,BC-60,

BST-14,BST-15,BST-22,BST-25,BST-27,BST-30,BST-33,BST-36,BST-37,BST-37,BST-38,BST-39,BST-40,alcatel,lg,samsung,panasonic,philips,siemens,benq-sie,sagem,kyocerea,sharp,masson,bird,dbtel,pantech and son on.