EverLast 12N5.5-3B 12V Conventional Battery with Acid Pack (5 5/16 L X 2 3/8 W X 5 1/8 H) Power: this design Includes heavy duty alloy grids to boost Cranking power ensuring the highest possible starting power Available in a conventional battery design PERFORMANCE: EverLast conventional batteries feature advanced separators and through-the-partition construction to shorten the current pathway and reduce electrical resistance Easy maintenance: the manifold vented cover and durable see-through polypropylene case make periodic maintenance as easy as possible Longer life: sealed terminals & heat sealed cover protects against seepage, reduces corrosion, and extends battery life