Spy camera battery

[deadmansshoes]

Hi All

I'm new here, and somewhat new to electronics but depending on advice this should be well within my ability. I have an oldish spy camera designed to look like a usb flash drive. It's cheap and cheerful enough but I need it to last a little longer, the battery is polymer lithium 260 mAh I was looking for some advice on how to upgrade it?

Inceidentally let me know if 've posted this in the wrong forum and I'll happily move it.

Thanks in advance everybody