*UPDATE*
Dedicated to the Grey Wolves team:
Real Battery Live AKA Advanced NASA Battery Fix for the Grey Wolves Supermod 
See first post for the links
But now, I need really hair raising reports of young Grey Wolflings about low oxygen, high CO2, batteries running below 25% while hunted by DDs, depth charges damaging the fragile batteries etc.
Have Fun!
P.S.
:hmm: It just struck me...
I have an idea about Hemisent's sabotage mod...:|\