Panasonic HHR200A - Manual (Page 5)

NICKEL METAL HYDRIDE HANDBOOK, PAGE 11 AUGUST 2005
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Self discharge characteristics
Self-discharge is affected by the temperature at
which the batteries are left standing and the length of
time during which they are left standing. It increases
in proportion as the temperature or the shelf-standing
time increases. Panasonic’s nickel-metal hydride
batteries have excellent self-discharge
characteristics that are comparable to those of Ni-Cd
batteries.
4) Cycle Life Characteristics
The cycle life of these batteries is governed by the
conditions under which they are charged and dis-
charged, temperature and other conditions of use.
Under proper conditions of use (example: IEC charge
and discharge conditions), these batteries can be
charged and discharged for more than 500 cycles.
•
Cycle life characteristics
5) Safety
When the internal pressure of these batteries rises
due to overcharge, short-circuiting, reverse charge or
other abuse or misuse, the self-resealing safety vent
is activated to prevent battery damage. Panasonic’s
nickel-metal hydride batteries have similar safety
characteristics as Panasonic Ni-Cd batteries.
NICKEL METAL HYDRIDE BATTERIES - CONTINUED
120
100
80
60
40
20
0 100 200 300 400 500
Temperature : 20˚C
Model
: HHR200A
Capacity Ration (%)
Number of Cycles (cycle)