https://forum.sailfishos.org/t/the-volla-22-gigaset-gs5-thread
My experience with the battery life is: with stuff like tooter (mastodon client) running all day, a charge a day. With more conservative use, 2 days. But the 4.5.0.18 release is fresh, so I’m still measuring. In general, I’m a fairly heavy user since I also develop on these phones, so my use is not the norm. @Pasik2 or @teracube may have some insights? I don’t think there are that many users yet 
@playforvoices also has a GS5, I think?