4 SPECIFICATIONS
4.5 Performance Specifications of Battery
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4.5 Performance Specifications of Battery
This section describes the performance specifications of the battery used for the CPU module.
*1 The Q7BAT-SET includes a battery holder.
Battery life
There are two types of values for describing a battery life: actual service value and guaranteed value.
• Actual service value: The battery life estimated based on the value actually measured by Mitsubishi under a storage
ambient temperature of 40 This value varies depending on the characteristics and variation of the components, and
should be referred to as a reference value.
• Guaranteed value: Refers to the battery life at 70 guaranteed by Mitsubishi in a storage ambient temperature of 70
based on the characteristics of the memory device provided by the component manufacturer
When used with a programmable controller CPU
The following table shows the actual service values and guaranteed values if the Q6BAT or Q7BAT is used with a
programmable controller CPU.
■ Actual service value (reference value)
Item Q6BAT Q7BAT
*1
Type Manganese dioxide lithium primary battery
Initial voltage 3.0V
Nominal current 1800mAh 5000mAh
Battery life when not used Approximately 5 years (room temperature)
Lithium content 0.52g 1.55g
Application To hold backup data and clock data
Extended SRAM
cassette
Power-on time
ratio
*1
Actual service value when used with the
R04CPU or R04ENCPU
Actual service value when used with the
R08CPU, R08ENCPU, R16CPU,
R16ENCPU, R32CPU, R32ENCPU,
R120CPU, or R120ENCPU
Q6BAT Q7BAT Q6BAT Q7BAT
Not used,
used (1MB type),
used (2MB type),
used (4MB type),
used (8MB type)
0 to 100% 43800 hours (5.00
years)
43800 hours (5.00
years)
43800 hours (5.00
years)
43800 hours (5.00
years)
Used (16MB type)
*2
0% 30100 hours (3.43
years)
25500 hours (2.91
years)
30% 43000 hours (4.90
years)
36400 hours (4.15
years)
50 to 100% 43800 hours (5.00
years)
43800 hours (5.00
years)
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