Finding yourself adrift with a dead boat battery will completely ruin your day. With the Schumacher Ship ‘n Shore SC1645 15A 12V Three-Bank On-Board Marine Sequential Battery Charger, you can avoid this scenario and keep your marine lithium (LiFEPO4), standard, AGM, and deep-cycle batteries fully charged and in top condition. Plus, the SC164r has three charging banks allowing you to charge up to three batteries with sequential time slice charging. This charges the first battery for 15 minutes, then charges the second battery for 15 minutes, then charges the third battery for 15 minutes, before cycling back to the first battery until all connected batteries are fully charged. Plus, the charger is fully automatic. Simply hook up the batteries, select your battery type, and charging will start automatically. Once both batteries are fully charged, the SC1645 will shift to maintain mode. The SC1645 features a 15A rapid charge rate for fast charging and water resistant IP65 construction. It can also be mounted permanently in either a vertical or horizontal position. Other features include charging status and error LED indicators, ring leads with inline fuses, and selectable battery type.