Datasheet

2.11 DISCHARGE CHARACTERISTICS OF NIMH BUTTON CELLS
The capacity and the voltage level of a cell during
discharge are limited by various operational parameters.
The most important of these are: the rate of discharge,
the ambient temperature and the end of discharge
voltage. In general, the higher the discharge current, the
lower the discharge voltage and the available capacity;
this tendency becomes pronounced when the discharge
current reaches 2 CA.
FIG. 13
Relative capacities, based on the
effective capacity (= 100%C at room
temperature) as a function of the
discharge temperature at 0.2 CA
Charge: 0.1 CA, 16 hours at room temperature
Discharge: 0.2 CA to 1 V at various temperature
FIG. 12
Discharge curves of NiMH Button Cells
V…H(T) at various temperatures
A = -20°C
B = 0°C
C = +20°C
D = +50°C
E = +65°C
Charge: 0.1 CA for 16 hours at room temperature
Discharge: 0.2 CA to 1 V at respective temperature
FIG. 11
Discharge curves of NiMH Button
Cells at various continuous loads
Typical discharge curves of NiMH
Button Cells at +23°C
page 22 | 23