[Wavery]

I've been running a 230ah LiFeP04 battery in our TM for almost 2-years now and well over 10K miles. I don't have any devices between our TM and the TV (2012 Silverado). I have never had an issue with the TV alternator (crappy AC Delco alternator).

Having said that. I have solar on the TM and I never let the LiFeP04 battery get below 80% while in storage (I store the trailer in a carport). Before we leave on a trip, I leave the TM in the Sun for a few days to bring the battery up to 100%.

I think that most of the people that say that you need some device to protect your alternator have something to sell. Before anyone posts, "Oh YA!!!! my alternator burned up when I switched to LiFeP04"........ alternators fail all the time, lithium battery of no lithium battery. So a burnt out alternator is little "proof" that the battery had anything to do with it.