UNMANNED UNDERSEA VEHICLE WITH MODULAR BATTERY SYSTEM

An underwater vehicle includes a modular battery system. The modular battery system includes at least one removable battery tray. The modular battery system further includes a battery tray system configured to hold at least one removable battery tray. The modular battery system further includes a controller coupled to the at least one removable battery tray that is configured to detect the battery chemistry of the at least one removable battery tray.