I just completed a self-install 600 watt, 1000 amp hour lithium battery upgrade to my 2018 Globetrotter. This gives me a little over 10kwh usable battery power + 3kwh solar/day.
I'm extremely happy with the solar, yesterday it peaked at 540 watts, considering the panels are at slightly different tilts and the time of year this absolutely crushed my expectations.
The increase in tongue weight is partially offset by removing the existing inverter and two led batteries which were further forward. The Globetrotter has limited GVWR so this is upgrade is definitely a compromise, but one I obviously find worth it. Also I lost some very useful front storage, but gained some extra storage in the old battery compartment.
Here are some progress photos:
-Solar panels:
https://photos.app.goo.gl/h8lMXHBoqFMjF5oZ2
-New main breaker:
https://photos.app.goo.gl/HCR2KPyjpoJhwfFB3
-Planning the DC distribution busses:
https://photos.app.goo.gl/ezyrqFlqisc9jVnl1
-DC distribution busses install progress photo (batteries below):
https://photos.app.goo.gl/M4cCQofEnoHURRz53
It was a big job and a lot of work both in terms of research and installing. I went the self install route as when I spoke to a well known installer I found online, I didn't vibe with him and other installers were booked out for months. If you are going to take on a job like this, the most important thing above all is safety, so things to be at the top of your mind is overcurrent protection (fire risk), grounding (electrocution risk), change to weights & power to the brakes.
Main equipment
5 x 200 Amp Hour EPS Lithium Ion + battery management CPU, solonids, shunt.
6 x 100 Watt Solar Panels + Mounts.
Victron Energy SmartSolar 150/85 MPPT Controller.
Go Power IC-3000 Inverter/Charger.
Blue Sea Systems 50 amp triple pole breaker.
2x Blue Sea Systems 1000amp bus & 600 amp bus.
Blue Sea Systems 60 amp CB, 600 amp battery disconnect, 400 amp battery disconnect.
450 amp main fuse.
600 amp inverter fuse.
The research was kind of tough - starting out it was hard to know where to get started - so I'm happy to answer any questions to those thinking of doing something similar!