Buoy High Capacity Lithium-Ion Polymer or Lithium-Ion Batteries Direct Recharging From Solar Panel No Charge/Load Regulator Required for Lithium-Ion Continuous Cell Balancing Maximizes Reliability Intelligent Battery Management System Extended Cycle Life and Calendar Life Extended Temperature Operating Range -40°C to +60°C Also offer Lithium Primary custom batteries Oceanographic AUV MUV ROV Subsea Well Production SWE SeaSafe® Print