Which statement accurately describes Non-Spillable Batteries?

• A. They use a jellylike electrolyte to prevent leakage
• B. They do not contain any electrolyte
• C. They are designed to prevent leakage of electrolytes with a jellylike electrolyte or porous separators
• D. They require no ventilation

Answer: (C)

Non-spillable batteries are built so the electrolyte cannot leak if the case is damaged. This is achieved by using a jellylike (gelled) electrolyte or by absorbing the electrolyte in porous separators that lock the liquid in place. The important point is that electrolyte remains inside, but its form prevents leakage, which is why these batteries are considered non-spillable. It’s not accurate to say they contain no electrolyte, and they can still vent gases, so ventilation isn’t eliminated. The description that covers both gelled electrolyte and porous separators best explains how leakage is prevented.