I found the extra battery augments extremely useless, since you still only recover the single cell. And if you needed to Typhoon someone, munch a candy bar, and do it. Wait for the one cell to charge, eat another and repeat.
But I just beat the second boss, and I have most of the useful augments. (Stealth/Pacifist run)
But I just beat the second boss, and I have most of the useful augments. (Stealth/Pacifist run)