checking batt. mah

Dumb question maybe ....Using the Hyperion 0610inet charger, is there a way to connect my battery (Neu 5s 4900) to see how much Mah's are in it at that moment ??...what I'm doing is using "store" mode... i takes my batts to 60%...is this 60% of what it was when i connected the battery??....or 60% of the total capacity of 4900 ??....so in other words should i fully charge my battery to 100% first,then use "store" mode to bring it to 60% ?? or can i use "store" mode at any time and does the charger know to store it at 60% of 4900 mah ??.....LOL,am i making any sense ??...basically i was told to store my batteries at about 50 to 60% of capacity if I'm not gonna use them for 3 or 4 weeks so i was wondering if theres a way to check my batteries capacity ....thanks for the help