The MM-12 is a small and lightweight high performance Starved Electrolyte (Lead Acid) battery. The MM-12 is memory free and when properly maintained will offer a consistent run time over the life of the battery. A convenient shoulder strap is standard in addition to a sewn-in belt loop. The MM-12 utilizes Starved Electrolyte, also known as Gel-Cell or Lead Acid. Advantages: Low cost, high per cell voltage, no memory effect and good capacity life.