YES it can still work.
Some of our GUARD10 CCTV standalone cctv systems have inbuilt batteries that can last between 6hrs – 3months depending on the model. Aside from having inbuilt battery and solar panel, it also has inbuilt option to insert your 3G or 4G Sim card for remote viewing and playback from anywhere in the world. For more info: 09070000104, 09070000212