Page 592 - Battery Reference Book

51/30 Nickel batteries

Table 51.30 NlFE Jungner sealed nickel-cadmium cells: technical specifications
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Cell type KR 15/51 KR 23/43 KR 27/50 KR 35/62 KR 35/92
Nominal capacity (A h) (5 h rate C5 at
25 f 5°C to end-voltage 1 V) 0.40 1.1 1.6 3.6 5.6
Current on discharge (mA) (0.2C5A) 80 220 320 720 1120
Dimensions:
Diameter (mm) 14.5 22.7 26 33.2 33.2
Height (mm)* 50.3 42.2 48 59.5 89
Weight, approx. (g) 20 45 65 140 210
Energy content (average discharge voltage
with discharge at 5 h current), 0.2 C A, is 1.2V:
W Wcell 0.48 1.32 1.92 4.32 6.72
wmg 24 29 30 31 32
W Wdm3 65 81 78 86 90
Internal resistance (ma)+ 90 27 22 13 11
Charging:
Normal charging current 14-16h (m A) 50 120 200 400 600
Trickle charging minimum current (m A)* 20 45 75 150 250
Temperature range From 0 to 40"C, preferably normal room temperature
Discharge:
Maximum recommended continuous
discharge current (A) 1.5 5 8 15 20
Maximum recommended discharge
current for 5 (A) 7 15 20 50 80
Temperature range From -40 to +40"C
Storing In charged or discharged condition: use a cool storage place,
preferably with temperature lower than 15°C
Terminal arrangement:
Cell type CF, drawing No. 90-51400 90-51405 90-52813 90-5141 1 90-51417
Cell type HH, drawing No. 90-51401 90-51406 90-52814 90-51412 90-51418
Cell type HB, drawing No. 90-51402 90-51407 90-52815 90-51413 90-51419
Batteries with even number of cells,
drawing No. - 90-52359 90-53536 90-52357 90-52355
Batteries with odd number of cells,
drawing No. - 90-52360 90-53537 90-52358 90-52356
Corresponding dry cell R6orAA Sub C R14 orC R20 orD -

* Contact button is not included in the height with the exception of KR 15/51. Add 2mm for contact button. KR 15/51 always has a contact
button even when soldering tabs are used
Obtained from d.c. measurements of voltage and current after discharging 10% of nominal capacity from a fully charged cell
* Recommended tolerance for trickle charging current is +20 and -0%
The available GEC range is given in Table 51.33. cylindrical cells, which consumers may use as altern-
A discharge curve for a typical cell in this range is atives to popular sizes of primary cell. Equipment for
shown in Figure 51.23. properly recharging sealed cells is not usually available
Oval cells are available at a rated capacity at the 1 h where throwaway cells have been used, so General
rate of 4A h at 25°C. Their continuous overcharge rate Electric provide the rechargeable cells as part of a
is 400 mA maximum and 200 mA minimum, and their whole Perma-cell system, which includes the proper
internal resistance is 5 p C2. These cells are available charger for these nickel-cadmium batteries.
either as a standard cell for normal charge rates (model The Perma-cell system is a complete commercial
G04.0) or as a Goldtop cell for normal charge rates battery-charger system. The most common sizes of
(model G04.0ST). The rectangular cell VO-4 (model consumer batteries (AA, C, and D) are available in
GR4.0) has a rated capacity of 4Ah at 25°C at the the Perma-cell line. Typically these batteries can be
1 h rate, maximum and minimum overcharge currents recharged 1000 times or more with the Model BC-1,
of 400 and 200mA respectively, and an internal four-cell charger.
resistance of 4 p 0. Three larger industrial chargers are available. Model
The trade mark Perma-cell designates a rechargeable BC-48 will recharge from one to 48 standard D-size
nickel-cadmium battery-charger system using sealed model GC-3 Perma-cell batteries, rated 1.2 Ah. Model