Product Manual

Document No. 6-0100 Rev. E
Page 7 of 41
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 (i.e., silicon bronze) terminals
providing an improved low resistance electrical connection. The copper alloy terminals are non
corrosive. 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.