So I always make my techs with segmented batteries that don't chain react all the way down the craft. I separate them with an anti-explosion wall as I call it, makes it so that taking an explosive shot doesn't ruin your day in the campaign when your shields are down. They are nice and fine and work well, but it wastes a lot of space that could be used for something else. Here's what I suggest: make some batteries that don't explode with enough damage to take out 1/3 the health of a GSO battery. This will make it so that 3 of them would have to explode in order to combust a GSO battery and cause a chain reaction. Their own health should be relatively strong so they don't chain react themselves as battery explosions can damage at least all the blocks around it. Maybe just make some special code that makes them very resistant to battery-explosion damage and in the lore coat them with some sort of anti-acid heat resistant stuff. As of right now, you have two options: waste space that could be used for batteries with anti-explosion walls or have chain-reacting batteries that destroy your tech in one fell swoop. I think a third could really benefit the game: sacrifice a bit of cash for some batteries that can act as anti-explosion walls.