WILL I LOSE DATA WHEN FITTING NEW BATTERY IN MY TOTOM 910

Yes but as a member of the public you will not have the appropriate software or equipment.
Your insurance company will help especially if it helps their claim or the Police will assist you gathering evidence for a prosecution.
Info gained will be speed, time (set by sat gps receiver) not what time you say it is and exact location with 3 square metres and direction of travel.
Hope this helps with your question.

How old is the battery? Rechargeable batteries usually last 3 to 5 years before they start losing their ability to give normal power and voltage. If it is 3 years or more, it is suspect to be at fault; if 5 or more, most likely a new battery fixes the problem.
If the tomtom is at fault, you are most likely out of warrantee time, however, most people never contact the manufacture when there is a problem (even if it is in-warrantee). I suggest you contact manuf. and do not take no for an answer. Be a pest to them about your problem and tell them you will berate them and crucify their product on the internet. Send them the unit (afterall , if it is bad, you have nothing to lose), let them deal with figuring out how to get you off their backs. It usually works very well-----they'll send you a new one just to shut you up. Goodluck, Macgivor

Have same thing. I did call Tomtom and they are guessing ,just like me ,that battery is dead and offered me US$ 75 off brand new go 730 and old one u can keep. Was told ,they dont sell battery replacement .

Sounds like someone will sue their **** soon as class action .

Try doing a device update while connected to tomtom home, if that doesnt work backup your device onto your commputer and try reinstalling the software and maps ect onto your device.

Sounds like a dying battery. There is not enough charge being maintained in the battery to complete the loading of the data. ChaNGE THE BATTERY

needs a complete recharge

yes it is, a new battery is fairly cheap and can be replaced without having to send it off to the reair center

Fixed both of them by changing the batteries. Easy fix and didn't lose any data.

open mp3 file and totom music file and copy accross one song , close pages and shut down tomtom s/w , disconect from pc and turn on goto album that song should now be listed if it plays you will need to repeat procedure for the rest of songs not 1by1 but all.

Yes you can buy a new card with all the map data on it. You can also search the internet for a program to "unformat SD card" only if you didn't write any new information onto the formatted SD card