Lithium Titanate

Easy answer for me. Expensive batteries give me peace of mind. With Covid, our trailer is parked for 3 seasons on a piece of property we bought (to camp on because campsites were closed last summer and for eventual retirement). With plenty of solar and a big, light battery bank, I can keep a residential fridge running full time with no worries and plenty of power for days if there's no sun - something I can't do with a generator since we're not there full-time. When we get back on the road (who knows when?) we're fully self sufficient and well within weigh limits (something I can't say about my previous battery bank of 3 huge Rolls 210a 12 volters...).