In Subnautica 2, managing battery power is crucial for survival, as most tools require batteries to operate. Players can craft a Battery Terminal to recharge batteries, which can hold up to six at a time. To unlock this terminal, players must scan two Battery Terminals found in the Old Habitat area. The crafting materials needed include 2 Titanium, 2 Quartz, and 1 Copper Wire. Once built, the Battery Terminal will recharge any batteries placed inside it, provided the base has power. Additionally, players can easily replace batteries in their tools by holding the tool and pressing 'R' to select a new battery from their inventory. For vehicles, Power Cells can be recharged at a Power Cell Terminal, which requires 3 Titanium, 3 Copper, and 1 Wiring Kit to craft. This terminal does require power to operate, unlike the Battery Terminal.