12. Take out the memory card cover

Barcode Scanner Engine (2D) (SE4500) for Symbol MC3190-G..

.Battery Lock cover for Symbol LS3578-FZ, LS3578-ER ..

Battery Replacement (970mAh) for Motorola Symbol RS507, RS507X ..

Charging connector ( 2-Pin, on back cover )  Replacement for Symbol TC25 ..

.3. Take out the Screw under the plastic..