im a gaurdian
i got 2 slots for charms

am i getting the bonus from both?

it doesnt look like it

Only from your main charm.


http://ladderslasher.d2jsp.org/index.php?g=1#AccessorySlot
The Accessory Charm is an additional Equipment slot reserved for a second charm. The Accessory slot however does not reflect stats that are on that charm, with exception to Enhanced Effect. Efficiency is reduced by 25% of the total displayed. This charm is used just like the main charm slot and is not reflected by your total inventory space restrictions like the rest of your equipment.
In the inventory, it is abbreviated as Acc. Charm

wow, ty for that link

so i should just look for a high EE on the second
and keep the good mod ones for the main

ty for that link man
so appreciated