Yes, I was talking about K5 (also valid for K5iis).
And the 1500 is VERY conservative, and I don't have the LCD off, I just have the auto-power off at 1 minute. No flash. Reasonable percentage at 800+ ISO, and that is noticeable in battery life.
I do some reviewing/deleting every now and then.
I have 3 Li90 [for K5 and K5iis], 2 are from when the K5 came out. Don't know how many years that is, but both cameras are way over the rated shutter life, so they've seen more than a few full cycles (I try to avoid that now as I notice a performance drop coinciding with the first drop in the battery meter, and it's not good for the battery).
At the end of the day I'd have 1 empty battery, move the half used from primary to secondary camera, and also charge the one in the secondary (was at 1/2). This was for 3000+.
I you're getting the CIPA or less, and not being heavy on flash, I'd say you have a problem.
Or a very demanding use of battery