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Which action follows a clear or white indicator eye?

  • A.Nothing
  • B.Top up the cell with distilled water, which restores the level and therefore returns the indicator to its normal state
  • C.Replace the battery, since the electrolyte level has fallen
  • D.Charge the battery, after which the indicator will turn green and the battery may be returned to service

Answer: C

White or clear means the level has dropped below the float, which on a sealed battery cannot be corrected. Topping up is impossible on a sealed unit, which is exactly why the last option tempts anyone who has worked on older batteries. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb. Naming what changes and what stays the same is the reliable route through questions of this shape.

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