Replace internal battery

It's possible that the DVR's internal battery is losing charge, causing the clock to lose time. Typically, DVRs use a small lithium battery to power the clock and other internal functions. Over time, this battery can lose its charge or fail entirely, which can cause the clock to lose time or reset completely.
To replace the battery in your Channel Master DVR, you'll need to open up the device and locate the battery. Depending on the model of your DVR, the battery may be easily accessible or it may be hidden inside the device. You may want to refer to the user manual or contact Channel Master for specific instructions on how to replace the battery in your model.
Once you've located the battery, you can replace it with a new one of the same type. Lithium coin batteries are a common type used in electronics, so you should be able to find a suitable replacement at most electronics stores. After replacing the battery, you may need to reset the clock and other settings on your DVR.

You can buy a replacement battery here at their webpage. MC9060 RFID Mobile Computer from Symbol And here is the link to a youtube video on how to replace the battery Self Disassembly Repair Manuel for Motorola Symbol MC9060 RFID MC906R

you should check the inverter and the charger boards as well.
Mainly IGBTs and drivers (IGBT drivers).
better locate the fault and replace the defective board

These batteries will last for years if not longer. I would not believe that it is bad. Now, if you want to reset a BIOS password check my tip.
http://www.fixya.com/support/r5953318-reset_bios_password

compartment located behind lcd. or on the bottom of camera. usually doesnt need replacing though. i guess its not keeping the date and time

battery is inside the handle... open the three top screws of the handle cover and remove the cover. you can view the batteries.. replace both of them with same type.

Just as a follow-up I managed to locate the problem. I opened the camcorder up as it is out of warranty anyways and found that there is a thin flat flexible cable which I will call a ribbon cable that is broken. It connects the main circuit board to the one that holds the external battery and internal battery. I have called Canon to purchase this part (it has a part number etched on it which when you read it off they say it sounds like a legitimate part number) and so far have not been able to get it (they assume it is part of the main circuit board assembly and have not been able to actually locate this part number). As it stands now I know the problem and can not get the part.

The internal battery is located under the cover for the AA batteries compartment.  The internal battery holder is located next to the middle battery of the line of three batteries.  The end of the holder has the internal battery size printed on it (CR 1220).

Remove the Front facia surround Undo four screws holding internal works to outside body You will need a T6 star screwdriver for this. Remove internal works from body at the base you will see silver foil covering feel over this you will find 4 T5 star screws securing this remove these and also remove speaker by two locating T8 star screws. Gently remove the electronic board keep all locating cables intact You will then see two T4 star screws holding battery holder remove these and the plastic holder .Unclip battery and disconnect from Pcb Board fit new battery and reassemble. .

Here's the battery you need: http://www.batteries.com/productprofile.asp?appid=254536 It's not inside the camera, it's the rectangular black box located on the back of the camera. It should just slide off.