I'd listen to Tim, (Ferndale) he knows his micros.

Also a tip and a question. Tip first, it's a no-no to store a pack fully charged. Unless it's for a short term duration. I'd say a week or less.

Now for the question. What are you using to charge the packs?
If it's the included charger like most of the micros, the one that runs off AA cells, my understanding is it charges at a higher then 1C rate for quick recharges. The easier you are on your packs charging C rate, the better for them.

And lastly yeah, like Tim I haven't had a lotta luck with the stock packs life and performance, compared to the Hyperion and Thunderpower.