UNLOCK // PDA CASE FILE
Can't Unlock the Battery Charger in Subnautica
The Battery Charger is a two-fragment habitat module. The fastest check is the wrecks in the Grassy Plateaus, not the Aurora or a later story facility.
LAST CHECK
ANSWER LOCK // QUICK RESPONSE
Scan two Battery Charger fragments in wrecks, commonly in the Grassy Plateaus. Once the blueprint completes, build the charger with the Habitat Builder inside a seabase or Cyclops.
SIGNAL CONFIRMEDBLUEPRINT DIAGNOSTIC // WHY IT ISN'T UNLOCKING
The Battery Charger is unlocked from its own two-fragment scan set. Finding another interior module or scanning the same completed fragment type will not finish it.
UNLOCK CHECKLIST
- Find Battery Charger fragments in wrecks
- Scan two Battery Charger fragments
- Build it with the Habitat Builder in a valid interior
BRING THIS
- Scanner
- Seaglide
- Oxygen reserve for wreck searches
DATA ACCESS LEVEL
Reveal only as much as you need
COMMON REASONS YOU ARE STUCK
- Searching the Aurora for this blueprint
- Scanning a Power Cell Charger fragment instead
- Counting duplicate scans after the blueprint is complete
- Trying to build it before the Habitat Builder is available
EVIDENCE LOG
Verification record
Facts on this page are separated from player speculation. Version-sensitive answers should be rechecked after an official update.
LAST CHECK2026-09-01
- SOURCE // 01Battery Charger OPEN SOURCE ↗WIKI · checked 2026-09-01
- SOURCE // 02Grassy Plateaus OPEN SOURCE ↗WIKI · checked 2026-09-01