I've been testing most of the battery patch variations. Yesterday, I removed everything, to start from scratch again. But, before installing the latest battery patch, I tested my phone under normal conditions, and it seems very similar to when battery patch was installed.

I still keep speedpatch (the last version before the .deb package), with my own profile overclocked to 805Mhz.

In summary, I don't see much difference. You can see in the attached image, the standby time with no batterypatch at all.

I'll keep testing.