1.
Discharge current rate and recommended cut-off voltage
There are some applications that require a specific cut-off voltage
by local or national codes, such as emergency lighting normally
requires a cut-off voltage 1.75V/ per cell on SLA Battery.
Figure 1 shows the recommended cut-off voltage on 6V and
12V batteries, consistent with discharge rates. "C"
is nominal capacity.
Discharge
Rates vs Cutoff Voltage
2. Temperature effects in relation to battery capacity
The ambient temperature during discharge should be held within the
range of -15 to 50°C (5 to 122°F). Low temperature may reduce
the available capacity; and high temperature may cause deformation
of the battery housing or damage the battery. 20°C (68°F)
rated 100%.
Temperature
3. Storage, Self-Discharge and Shelf-life
The self-discharge rate of GFX battery is approximately 3% per month
when batteries are stored at an ambient temperature of 20°C
(68°F). After long-term storage, all batteries deliver less
than rated capacity on first cycle. It may be restored through several
charge/ discharge cycles in a cyclic application at full capacity.
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4.
Battery life of cyclic use
Cyclic life is very much dependent on the depth of discharge, operating
temperature and charging conditions during each cycle. Basically
the individual battery has its own characteristic of life, depending
on its detailed charge/ discharge condition. Therefore in real application,
it is very important to confirm the battery life sufficiently.
5. Battery life of standby use
The typical float life at room temperature can be approximately
3~5 years. As a floating application, voltage must be set to 2.25~2.3V/
cell
Life (Years)
Ambient
Temperature
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