Recently complete a lithium upgrade and I know that there are questions about where you put everything, so thought I'd share what I did.
But first, shoutout to legend Bill Pittore for coaching me through some challenging obstacles.
I took some of the space under the nav table and built a cabinet to house the new components.
First photo is what I had originally. After removing the switch panel and winch breaker, I made the opening bigger to make it easier to fish cables. Then I made two panels using purchased fiberglass panels to attach the components to. Those panels are about 2" in front of the original opening. The cabinet door is even with where the sole meets the hull.
I used all Victron components, some of which are kind of large. The Lynx Distributor and the BMS I chose take up a lot of space, but I went with the NG batteries and all of the components are designed to work together. You could definitely use other smaller components and fit more in this space, like solar charge controllers. Either way, the nav area is still totally functional - you can still sit at it if that's what you're used to.
Biggest headache was accommodating the bow thruster. Learned the hard way that while a sufficiently sized lithium bank can power a thruster, there isn't a BMS that can handle the in-rush current. Ended up installing a separate AGM for the bow thruster.
Highly recommend incorporating the Cerbo GX. It gives you so many connectivity options in addition to battery state. I have a Safiery tank level sensor on the holding tank and 3 Ruuvi sensors for temperature (fridge, engine compartment, and the new electrical cabinet) all hooked up to the Cerbo GX. Installed DC fans in the cabinet that are controlled by one of the relays on the Cerbo based on temperature settings. Might get more Safiery tank level sensors for fresh water tanks.
Here's a link to photos: