yes I know but you can wire a battery case to the camera to power it, the battery case holds 4 X AA batteries
Thanks for the quick reply, is it this one?
If so, it now has a rechargeable battery fitted.
EDIT
The screen needs a continuous power supply.http://www.maplin.co.uk/Module.aspx?ModuleNo=228327
Complete portable wireless security with ultra compact LCD monitor
Wireless camera with rechargeable li-ion battery installed and a 2.4-inch wireless LCD receiver
Rechargeable battery lasts at least 5 hours while continuously working
50m transmission distance
4-channel LCD receiver
Sleek and durable black finish
Easily fixes to walls or ceilings
Suitable for use where there is none or limited access to power
Ideal for theft prevention, after-hours surveillance, home security and more
The wireless camera can be easily fixed onto walls or ceilings and its battery lasts up to 5 hours while continuously working. It has 50 metre of transmission range making it wide coverage for cameras of its range. The LCD display receiver comes in sleek durable black finish. The unit is ideal for using in areas where no or limited access to power exists. This Wireless Colour Camera and 2.4-inch LCD Wireless Monitor is ideal for general surveillance at home or small offices. Contents: Wireless camera (with built in battery) Wireless 2.4-inch TFT LCD receiver 2 x Power adaptors Lens adjuster Mounting hardware User manual