[rames14]

Jann, there are many advantages to lithium batteries, if you have the correct charger (newer Montanas have a lithium switch). The first advantage is that lithium batteries maintain their voltage much better than lead acid. So, especially for sensitive electronics, you will not dip below 12v until you are almost discharged. Second, lithium batteries charge at a faster rate (with the correct charger). Most lead acid batteries charge at 13-15 amps/hr. Lithium can charge at 100 amps/hr. Think national parks that only allow 4 hours of generator use/day. Third, with most lithium batteries, you can discharge to 80-100% vs 50% with lead acid. And, with lead acid batteries, you are under 12v before you get to 50%. Lastly, size and weight are better by far with lithium. Obviously, the cost is the issue. You need to decide how you camp. People that boondock at places like Harvest Host, BLM land, national parks, etc will benefit the most.