| Electrolyte level too low |
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| When the electrolyte level is too low the cell plates project above the surface and there is a loss of battery capacity (loss of power). If the cell plates are not covered by electrolyte (sulphuric acid) corrosion will occur on the plates, plate bridges and cell connectors. This corrosion ensures the battery function can no longer be guaranteed. The battery will be unusable. |
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| Only top-up with distilled water as this prevents electrolyte impurities which result in an increased self discharge. |
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