Okay, I'm not sure how to effectively duplicate this... all I know is that one moment my batpack is running low on juice and a moment later, it's full... or my quantum helmet is about to lose power and then suddenly it's full again... or my nano leggings... or even my rubber boots!!! This has even happened on my electric jetpack! It's almost annoying to notice my drill is about to lose power and say to myself "Eh, we'll just run it dry, then head back to camp" ..... 1 hour later, "Hmmmm.... something doesn't feel right." Only to notice my batpack recharged on its own.
Now, sometimes the item will completely discharge and be empty for a bit, but if I leave it alone (and equipped) for a bit, it'll eventually get recharged. Occassionally my rubber boots do get destroyed, but the ones I'm currently wearing have been recharged at least 3 times now. And I know for DANG sure those little suckers shouldn't be recharging under ANY circumstances.
I have tried to make duplication steps for this, but the simplest thing I have done to replicate it, is stand idle in my factory doing nothing at all with JUST my quantum helmet on... even doing nothing, with an otherwise empty inventory, it got recharged..
The Mods I have installed are:
IC2 v1.23 (duh)
BC 2.2.5
AdditionalPipes
Mo' Creatures
RedPower2 (All except World and machines... I hate conflicts)
Zeppelin
Millenaire (Haven't found a village yet, though....strange)
Somnia v15 [1.8.1]
Recipe Book
And preqreqs for the above mods.
Now, it COULD BE one of the other Mods causing this, but since IC2 deals far more into Armor than the others, it looks the most guilty to me.