SunXtender Technical Manual

Document No. 6-0100 Rev. H
Page 7 of 43
PRESSURE RELIEF SAFETY VALVE - Each cell in the battery employs a pressure relief safety
valve. The valve is designed to release excess pressure that builds up over time to vent the
small quantity of gasses that do not recombine inside of the battery. Once the pressure is
released, the valve automatically re-seals. The gasses that escape are mainly oxygen and
some hydrogen, and these gasses rapidly dissipate into the atmosphere.
TERMINALS - Sun Xtender® AGM batteries employ copper alloy terminals providing an
improved low resistance electrical connection. Additionally, the copper alloy terminals offer
increased environmental protection and personal safety in comparison to commonly used lead
terminals. The terminals on most Sun Xtender® AGM batteries are recessed below the top of
the battery cover. This prevents short circuiting across the battery terminals. Refer to the
pictorial in Section 2.3 to see a detailed view of the various terminal designs that are available.
HANDLES – Lifting handles are incorporated into most Sun Xtender® AGM batteries. This
provides easier handling for lifting, carrying and installation.