I am attempting to stat up a psicrown with a custom list of stored powers, for a PF game using DSP's psionics rules. The Item Creation section in Ultimate Psionics covers how to calculate the cost of the new psicrown based on its manifester level and list of powers, but I have been unable to find the reference to how many PP it should hold at full charge.
There is a general formula in the books for PP in charged psionic items, which I had noticed as a pattern in the PP caps of the True psicrowns (thanks to Starwed for finding the reference for that rule), but it does not match with the printed values for the caps on the premade Lesser and Greater Psicrowns. Most of these seem to be at 1/3 and 2/3, respectively, of what the general rule calls for, but some are rather dramatically off. For example, Lesser Psicrown of Force and Fire and Greater Psicrown of Cautious Warrior both have ML 11, so using the 1/3 and 2/3 patterns, Lesser Psicrown of Force and Fire should have 36 2/3, rounded either to 36 or 37, while Greater Psicrown of Cautious Warrior should be 73 1/3. Instead, both are listed with a cap of 60 PP, which is too far off from either of those to be a rounding error, even rounding to the nearest 10. This apparent inconsistency is why I went looking for a more reliable, explicit statement on what they should have.
Cautious Warrior and Force and Fire have the same ML, but one is Lesser and one Greater, and both have the same 60 PP, which is 23 1/3 too high for one and 13 1/3 too low for the other, both too far off to be rounding to nearest 10.
The actual formula would be nice to have, also, but primarily what I'm looking for is the reference: a link to the SRD, a page number in the books, or preferably both.