http://www.ebay.com/itm/12VDC-2A-2000mA-Security-Camera-Power-Supply-Adapter-Splitter-QSee-Zmodo-LOREX-/322070413121?hash=item4afce47f41:g:PSUAAOSwy5ZXCwCC
This one will work.
Type: Posts; User: welwell
http://www.ebay.com/itm/12VDC-2A-2000mA-Security-Camera-Power-Supply-Adapter-Splitter-QSee-Zmodo-LOREX-/322070413121?hash=item4afce47f41:g:PSUAAOSwy5ZXCwCC
This one will work.
Replace the battery with a 12vdc 3a power adapter like this one: http://www.allelectronics.com/make-a-store/item/ps-123u/12vdc-3a-power-supply-used/1.html
Any regulated 12vdc power supply will work...
https://www.youtube.com/watch?v=dkkPNMEuXl4
Under the video click "show more" for ordering information
Regards,
Bill