MN1203 Просмотр технического описания (PDF) - Unspecified
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MN1203 Datasheet PDF : 5 Pages
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Alkaline-Manganese Dioxide
Performance Characteristics (cont.)
performance of alkaline and regular zinc-carbon cells
is compared in Figure 9, showing the “D” size cell at
70°F (21°C) and 32°F (0°C). Figure 9a shows “AA”
cell performance under the same conditions. The alka-
line cell will maintain a higher voltage for considerably
longer than the regular zinc-carbon cell, resulting in a
service life at lower temperatures which is up to ten
times that of the regular zinc-carbon cell.
5.5 Internal Resistance
Alkaline cells, because of their compact construc-
tion and highly conductive electrolyte, have low internal
resistance, usually less than 1 ohm. The low internal
resistance characteristic is a benefit in applications
involving high current pulses. Unlike regular zinc-carbon
cells, alkaline cells do not require rest periods between
pulses and maintain their low internal resistance,
increasing only at the very end of useful life.
5.6 Energy Density
Energy density is a measure of available energy
in terms of weight and volume. It is the ratio of a cell’s
capacity to either its volume or weight and can be used
to evaluate a cell’s performance.
Table 1 is a summary of the major alkaline
product types comparing both volumetric energy density
and gravimetric energy density. Volumetric energy density
is an important factor where battery size is the primary
design consideration. Gravimetric energy density becomes
important where weight of the battery is critical, such as
in portable computers and cellular phones. The values
shown in this table are typical for each cell size. Actual
energy output will vary, dependent mostly on drain rates
applied.
PRODUCT
NOMINAL
RATED
NUMBER SIZE VOLTAGE CAPACITY* LOAD
WEIGHT
VOLUME
TYPICAL GRAVIMETRIC
ENERGY DENSITY**
volts
cubic
ampere-hours ohms pounds kilograms inches liters
watt-hours
per pound
watt-hours
per kilogram
MN1300 D
1.5
15.000
10
0.304 0.138 3.440 0.056
59.2
130
MN1400 C
1.5
7.800
20
0.143 0.065 1.640 0.027
65.5
144
MN1500 AA
1.5
2.850
43
0.052 0.024 0.510 0.008
65.8
143
MN2400 AAA
1.5
1.150
75
0.024 0.011 0.230 0.004
57.5
126
MN9100 N
1.5
0.800
100 0.021 0.010 0.210 0.003
45.7
96
7K67
J
6.0
0.580
340
0.075 0.034 0.960 0.016
37.2
82
MN908 Lantern 6.0
11.500
15
1.349 0.612 30.620 0.502
40.9
90
MN918 Lantern 6.0
24.000
9
2.800 1.270 75.880 1.243
41.1
91
MN1604 9V
9.0
0.580
620 0.101 0.046 1.390 0.023
41.4
91
* TO 0.8V per cell at 21°C (70°F).
** Based on 1.2 volt average operating voltage per cell at 21°C (70°F).
Table 1. Comparison of typical energy densities of major DURACELL® alkaline cells/batteries.
TYPICAL VOLUMETRIC
ENERGY DENSITY
watt hours
per cubic inch
watt hours
per liter
5.2
322
5.7
347
6.7
428
6.0
345
4.6
320
2.9
174
1.8
110
1.5
93
3.0
182
To determine the practical energy density of a
cell under specific conditions of load and temperature,
multiply the ampere-hour capacity that the cell delivers
under those conditions by the average discharge volt-
age, and divide by cell volume or weight.
Gravimetric Energy Density:
(Drain in Amperes x Service Hours)
x Average Discharge Voltage
=
Weight of cell in Pounds or Kilograms
Volumetric Energy Density:
(Drain in Amperes x Service Hours)
x Average Discharge Voltage
=
Volume of cell in Cubic Inches or Liters
Watt-Hours
Pound or
Kilogram
Watt-Hours
cubic Inch
or Liter
8
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