Which battery type is designed to prevent electrolyte leakage through the use of a jellylike electrolyte or porous absorbent separators?

• A. Wet Cell Batteries
• B. Lithium Batteries
• C. Non-Spillable Batteries
• D. Nickel-Cadmium Batteries

Answer: (C)

Preventing electrolyte leakage relies on immobilizing the electrolyte inside the battery. The non-spillable design achieves this by using a jellylike (gel) electrolyte or porous absorbent separators (such as AGM). These features keep the electrolyte from flowing if the case is damaged or tipped, so leakage is minimized. That’s why this type is the best match for the description. Wet-cell batteries use free liquid electrolyte and are more prone to leakage; lithium and nickel-cadmium batteries are typically sealed, but the specific leakage-prevention method described—gel or absorbent separators—identifies non-spillable designs.