Subnautica Wiki
Subnautica Wiki
This article is about the Battery Charger as it appears in Subnautica. To see this subject as it appears in Below Zero, click here.
This article is about the Battery Charger. You may be looking for the Power Cell Charger.

The Battery Charger is an Appliance that recharges Batteries. It can be built using the Habitat Builder and placed in a Cyclops or a Seabase module. The player must scan two Battery Charger Fragments to acquire its Blueprints. These can be commonly found in Wrecks.


The Battery Charger can hold (and charge) up to four Batteries at a time. It features a display that shows the charge percentage of each Battery placed in it.

The Battery Charger uses Energy from the Cyclops or Seabase it is attached to recharge the Batteries that are placed in it:

  • Charge time for a fully depleted Battery (100 energy): 11 minutes and 5 seconds
  • Charge on battery increases by 9 energy (9%) per minute
  • Seabase/Cyclops power drained by same amount as battery charge (recharge efficiency is 100%)

Story Spoiler

Ion Batteries (500 energy) can also be recharged. 9% charge per minute equals 45 energy per minute for one ion battery. Charging 4 Ion Batteries at once will draw up to 180 energy per minute.

When the seabase is out of power and the battery charger has one or more partially charged batteries, a message will display on the battery charger’s screen saying there’s no power, going to try again in five seconds. A timer is also present counting down from five. If power is still not restored at the end of the 5 seconds, the timer will reset.


Wiring Kit.pngCopper Wire.pngTitanium.pngArrow-right (1).pngHabitat Builder.pngArrow-right (1).pngBattery Charger.png