Well technically those are zero point modules, not really batteries.
Zero Point Module, often abbreviated ZPM, is a power source, created by the Ancients, capable of supplying tremendous amounts of energy. It is one of the most formidable power sources known to exist, having been developed by the Ancients several million years ago during their reign of the Milky Way galaxy
Carter: I've finished comparing Goa'uld control crystals, all that glow is completely unnecessary.
O'Neill: So they added lights inside closed boxes because…?
Teal'c: The Goa'uld have always favoured displays of grandeur over practicality.
O'Neill: Hold on. You're telling me the galaxy's self-proclaimed gods are flying around in gamer motherboards?
Carter: Sir…
Daniel: No, I think Jack's right.
O'Neill: I am?
Daniel: Glowing lights everywhere, gold trim, needlessly dramatic startup sequence. And they definitely treat us as pawns in their games.
Teal'c: Indeed.
Fortunately we are not on Chulak.