PoE Ice Trap, Bossing builds

I just hit 100 with my Ice trapper and I've only done the bare minimum boss fights to unlock my voidstones. Now, I want to try to get better at bossing and learn more boss fights. I see a lot of Ice Trappers using Void Battery and a bunch of other uniques to maximize their power charges. Is this the play? Some of them are doing insane dmg!! I currently have 30 div to start this transition and wondering what items to start with. Thanks! My current POB:

Most builds don't bother with freezing pinnacle bosses which, on top of the fairly high ailment threshold of 25m, have another 70% less damage taken mod that makes it pretty hard to freeze them. The ailment itself is still fairly useful if you can achieve it as it gives you -70% action speed (relevant thread) against monsters that 'Cannot be fully slowed' (aka most endgame bosses) but the payoff usually wasn't there because you could invest in more damage instead and just kill them faster.

About a week ago I asked about ideas and suggestions for a Replica CIP build that I could try in SSF and with the help of someone providing a rough PoB I set out to give it a go. As I’m sitting at home rn with no power I realized that I’ve made it far enough to show up on PoE Ninja now so I figured I’d write up a quick update on my progress and where I’m trying to go. PoE Ninja Updated PoB, noticed missing qualities and changed Rumi's for Cinderswallow