Battery Charger vs Maintainer vs Desulfator
A charger replenishes energy, a maintainer is designed to support stored batteries, and desulfation functions target a particular lead-acid degradation mechanism.
Charger
Use a charger compatible with battery chemistry and voltage. Automatic charging profiles can reduce guesswork, but the manufacturer’s instructions still govern.
Maintainer
Maintainers are commonly used to keep suitable stored batteries from remaining undercharged for long periods.
Desulfator
Desulfation modes are not universal repair functions and should not be applied indiscriminately across battery chemistries.