The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- CalciumChlorate (0 members)
- Base (2 members)
- ElectricCurrentMeasurementResult (0 members)
- MassFraction (2 members)
- IntentionalBatteryProcess (0 members)
- Person (0 members)
- SpontaneousProcess (0 members)
- Filling duration (0 members)
- PerCubicCentiMetre (0 members)
- KryptonSymbol (0 members)
- ElectricCurrentDensity (4 members)
- LithiumBromide (0 members)
- ArtificialIntelligence (0 members)
- BariumBisfluorosulfonylimide (0 members)
- PicoSiemens (0 members)
- CaesiumBasedElectrode (0 members)
- Hardening (0 members)
- Cognition (0 members)
- OpenCellFoam (0 members)
- EntropyPerMassUnit (4 members)
- Magnetic separator (0 members)
- FrequencyPerAreaTimeUnit (0 members)
- LeadIITetrafluoroborate (0 members)
- Hard case: Speed (pre-sealing) (0 members)
- CoulombPerMole (0 members)
- MultiSimulation (2 members)
- Pouch: Thermal protocol (0 members)
- MilliGramPerSquareMetrePerSecond (0 members)
- Capacitance-based Tension Monitoring (0 members)
- AluminiumShuttleBattery (0 members)
- LowerCurrentLimit (0 members)
- NickelOxideHydroxide (0 members)
- BariumSaltCompound (23 members)
- MassExcess (0 members)
- MeasuringSystem (4 members)
- NewtonCentiMetre (0 members)
- MilliHenryPerOhm (0 members)
- KiloWeberPerMetre (0 members)
- KelvinPascalPerSecond (0 members)
- LinearElectricCurrentDensity (0 members)
- PolymerCompound (10 members)
- AluminiumAtom (0 members)
- MentalAgency (0 members)
- BisOxalatoBorate (0 members)
- LeadAcidBattery (1 member)
- HertzMetre (0 members)
- DifferentialPulseVoltammetry (2 members)
- ChemicalComposition (0 members)
- ChargingConstantCurrentPercentage (0 members)
- GrahameModel (0 members)