I'm not sure that I explained my self clearly. I understand that the battery is an integral part of the temple guardians arsenal. And that when equipped it can support the temple guardian in many ways.
I guess my specific question (and/or comment now that I have done further testing.) Is that a battery when socketed with a damage converter like a lava rock, or a poison fang. Will convert the damage type of all of the temple guardians combat arts to the same type. To varying degrees. This is different in it's effect from the default damage type displayed on the battery. Which as I understand it only affects the standard left click attack. And also different from any other bonuses/modifiers the battery may have on it.
The devout guardian combat arts seem to follow the same percentage of the damage converter value.
The lost fusion combat arts are a mix. I saw amplified discharge convert about the same as the devout guardian aspects. While jolting touch displayed 100% conversion.
The source warden combat arts, which I'm most interested in. Are converted the same as above. Which is to say, physical damage is converted by the percentage of the damage changing item. While any other elemental damage is converted 100%.
I do not see this happening with any other damage type socketing done to normal weapons. This is of value to me because I am bringing up a source warden based temple guardian. And being able to switch all of the different damage types that a source warden can produce to one type is huge. As I said in the post above it doesn't look like the damage type is actually converted. Only the damage type displayed, and the +x% of bonuses to the damage type. As an example my untouchable force buff without any other influencing factors displays a base value of 16 magic damage. I equip a battery with a lava rock socketed. Not just a normal 70% physical 30% fire damage type battery. A damage type converted, through socketing battery. My damage is shown as 100% fire damage, and adjusted by +x% fire damage bonuses. In this case with +25% fire damage bonus through jewels it will show 20 fire damage. In my experience it still does the normal damage type, in this case magic damage. This is important to the source warden temple guardian because now if I chose to, I could socket all +x% fire damage jewels instead of +x% all damage type jewels (which are typically lower in value at any given level), and receive full bonuses to the base value of all my combat arts. Primal mutation is the exception here.
It is possible that this was the same on the consoles. Without damage lore mastery working, changing damage types wasn't quite as useful. So I didn't experiment with damage converters as much. But the little I did, led me to believe that the socketing of different damage types in the original Sacred 2 was a little broken. Which is what spawned the question. The console version is subtly different to the P.C. version in many ways, but at it's root it is the same. Up until Ice & Blood.
I thank you for responding to me, and Darkmatters for making Sacred 2 Gold easier to obtain.