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Battery Life
Battery life depends on a number of key factors. These include:
Operating temperature of the battery;
Method of charging utilized;
Actual use of the product i.e.: standby or cycle service etc.

Giving due consideration to the above factors, the actual life of a battery in cycle service is
dependent on the depth of discharge of each cycle. The greater the depth of discharge of
each cycle, the less the number of cycles available from the battery.



The estimated life under float service of SP type is 7 years at 20℃/68℉; SPD type is 12 years at
20℃/68℉;SPG type is more than 20 years at 20℃/68℉. The float service life is affected by the
factors listed above and the number of discharging, the depth of discharging the battery suffers
during its life time. The more discharges suffered and the deeper the discharges, the shorter
the battery life. The higher the temperature, the shorter the battery life. If the battery temperature
remains at an elevated level for an extended period of time, the expected life is reduced by 50%
for each 8 to 10℃ of constant temperature above 20℃/68℉.