- Mar 21, 2004
- Near the beach in Delaware
Batteries on a boat are often a PIA to check the cells as you often need to move or remove the battery so you can see into the cells.Lead antimony batteries are much more tolerant of deep discharges than lead calcium starter batteries used in automotive applications. Their big downside is that they offgas more and require watering which is one reason for the switch to lead calcium in car starter batteries. Any battery labeled maintenance free is lead calcium and is not a true deep cycle.