Hi George,
Most vehicles use lead acid batteries and, of course, they work great. However, they are heavy and require maintenance.
The biggest difference between lithium and lead-acid batteries is the voltage delivered to the battery. Lithium batteries require lower voltage than do standard lead acid batteries.
"Lithium" batteries are also a newer technology, are light weight and only require regular charging.
If you want a "lithium" battery we recommend the lithium type chargers, although some will charge with standard battery chargers. (battery tender jr.)
I hope this helps.
You can read all about it and more at Battery University and other online resources.