Emergi-Lite M4 The Emergi-Lite M4 Battery cross-references to the below.This is a not an original OEM battery, but a substitute that is designed to meet or exceed the original battery's specifications. The state-of-the-art lead-acid battery is the valve-regulated type (sometimes called "sealed" or maintenance-free), which fixes the acid electrolyte in a gel or in an absorptive fiberglass mat. The advantage of this design is that the battery needs no water additions, can be operated in . . . The state-of-the-art lead-acid battery is the valve-regulated type (sometimes called "sealed" or maintenance-free), which fixes the acid electrolyte in a gel or in an absorptive fiberglass mat. The advantage of this design is that the battery needs no water additions, can be operated in any position, and can be used in close proximity to people and sensitive equipment. Additional benefits: maintenance-free,sealed no-leak design, higher cranking amps, lower self-discharge, greater vibration resistance, heavy duty, no-corrosion terminals. 5.04 6 12 4.25 2.82 5.44 1 Year SLA Universal Power Group No http://site.apexbattery.com/logos/emergi-lite.jpg 806593405754 New Plain, no terminals. ("H" Or "S2" terminal may be purchased separately. 2-U-D5672 is a "H" terminal. 2-U-D5673 is a "S2" terminal.) U