Application that runs from eclipse on device doesn't run on device alone, what can I do?

I build some application that collects info about the battery. when I try to ru开发者_开发问答n it using eclipse with debugging mode with the android device (not emulator) it works fine even when I just hit Run. When I install it on the device (the apk file) I can't run it... Another strange thing when I install it the open button is disabled.

what can I do to determine what is the problem?

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Check whether you have signed the application or not?have you disabled the debug mode in AndroidManifest.xml file by setting its value to "false"?