Hallo

I have not used the C100 for about three months, the battery does not hold the camcorder, now after three months I saw some settings or reset the time .. it's kind enough to leave the battery on the camcorder a few days, or need to buy a new battery micro?

Thanks

In the user manual, page 150 it says;

Built-in rechargeable lithium battery
The camcorder has a built-in rechargeable lithium battery to keep the date/time and other settings. The built-in lithium battery is recharged while you use the camcorder; however, it will discharge completely if you do not use the camcorder for about 3 months.
To recharge the built-in lithium battery: connect the DC cable and compact power adapter to the camcorder and use a household power outlet to power the camcorder for 24 hours while it is turned off.

ok,thanks Danny