Totems & endu charge

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GeraltWiedzmin wrote:

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Totems cast by players use their skills according to the player's stats, including modifiers from charges and buffs (like auras) affecting the player

As I understand stacking endu charges grants 4% phys reduction and ele resistance to my active totems right?

No.
Totems are using your skills, and those have your stats. So any skill the totem uses has your stats, and would be affected by modifiers from charges. The totem itself has it's own stats, which aren't yours, and those are what's used when it's being damaged, not the stats on the skill it's using.