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Pilas para relojes

Silver Oxide Batteries

Many brands and types of packaging, mercury-free of course

Pilas para relojes
Model
Volt­age (V)
Ca­pac­ity (mAh)
Diameter (mm)
Height (mm)
301
1.55
130
11.0
4.0
Model
301
Volt­age (V)
1.55
Ca­pac­ity (mAh)
130
Diameter (mm)
11.0
Height (mm)
4.0
303
1.55
175
11.6
5.4
Model
303
Volt­age (V)
1.55
Ca­pac­ity (mAh)
175
Diameter (mm)
11.6
Height (mm)
5.4
309
1.55
80
7.9
5.4
Model
309
Volt­age (V)
1.55
Ca­pac­ity (mAh)
80
Diameter (mm)
7.9
Height (mm)
5.4
315
1.55
19
7.9
1.6
Model
315
Volt­age (V)
1.55
Ca­pac­ity (mAh)
19
Diameter (mm)
7.9
Height (mm)
1.6
317
1.55
10
5.8
1.6
Model
317
Volt­age (V)
1.55
Ca­pac­ity (mAh)
10
Diameter (mm)
5.8
Height (mm)
1.6
319
1.55
21
5.8
2.7
Model
319
Volt­age (V)
1.55
Ca­pac­ity (mAh)
21
Diameter (mm)
5.8
Height (mm)
2.7
321
1.55
14
6.8
1.6
Model
321
Volt­age (V)
1.55
Ca­pac­ity (mAh)
14
Diameter (mm)
6.8
Height (mm)
1.6
329
1.55
37
7.9
3.1
Model
329
Volt­age (V)
1.55
Ca­pac­ity (mAh)
37
Diameter (mm)
7.9
Height (mm)
3.1
335
1.55
6
5.8
1.2
Model
335
Volt­age (V)
1.55
Ca­pac­ity (mAh)
6
Diameter (mm)
5.8
Height (mm)
1.2
337
1.55
8
4.8
1.6
Model
337
Volt­age (V)
1.55
Ca­pac­ity (mAh)
8
Diameter (mm)
4.8
Height (mm)
1.6
339
1.55
11
6.8
1.4
Model
339
Volt­age (V)
1.55
Ca­pac­ity (mAh)
11
Diameter (mm)
6.8
Height (mm)
1.4
341
1.55
15
7.9
1.4
Model
341
Volt­age (V)
1.55
Ca­pac­ity (mAh)
15
Diameter (mm)
7.9
Height (mm)
1.4
344
1.55
105
11.6
3.6
Model
344
Volt­age (V)
1.55
Ca­pac­ity (mAh)
105
Diameter (mm)
11.6
Height (mm)
3.6
346
1.55
9
7.9
1.2
Model
346
Volt­age (V)
1.55
Ca­pac­ity (mAh)
9
Diameter (mm)
7.9
Height (mm)
1.2
350
1.55
105
11.6
3.6
Model
350
Volt­age (V)
1.55
Ca­pac­ity (mAh)
105
Diameter (mm)
11.6
Height (mm)
3.6
357
1.55
160
11.6
5.4
Model
357
Volt­age (V)
1.55
Ca­pac­ity (mAh)
160
Diameter (mm)
11.6
Height (mm)
5.4
361
1.55
24
7.9
2.1
Model
361
Volt­age (V)
1.55
Ca­pac­ity (mAh)
24
Diameter (mm)
7.9
Height (mm)
2.1
362
1.55
23
7.9
2.1
Model
362
Volt­age (V)
1.55
Ca­pac­ity (mAh)
23
Diameter (mm)
7.9
Height (mm)
2.1
364
1.55
19
6.8
2.1
Model
364
Volt­age (V)
1.55
Ca­pac­ity (mAh)
19
Diameter (mm)
6.8
Height (mm)
2.1
365
1.55
47
11.6
1.6
Model
365
Volt­age (V)
1.55
Ca­pac­ity (mAh)
47
Diameter (mm)
11.6
Height (mm)
1.6
366
1.55
47
11.6
1.6
Model
366
Volt­age (V)
1.55
Ca­pac­ity (mAh)
47
Diameter (mm)
11.6
Height (mm)
1.6
370
1.55
40
9.5
2.1
Model
370
Volt­age (V)
1.55
Ca­pac­ity (mAh)
40
Diameter (mm)
9.5
Height (mm)
2.1
371
1.55
35
9.5
2.0
Model
371
Volt­age (V)
1.55
Ca­pac­ity (mAh)
35
Diameter (mm)
9.5
Height (mm)
2.0
373
1.55
29
9.5
1.6
Model
373
Volt­age (V)
1.55
Ca­pac­ity (mAh)
29
Diameter (mm)
9.5
Height (mm)
1.6
376
1.55
27
6.8
2.6
Model
376
Volt­age (V)
1.55
Ca­pac­ity (mAh)
27
Diameter (mm)
6.8
Height (mm)
2.6
377
1.55
24
6.8
2.6
Model
377
Volt­age (V)
1.55
Ca­pac­ity (mAh)
24
Diameter (mm)
6.8
Height (mm)
2.6
379
1.55
16
5.8
2.1
Model
379
Volt­age (V)
1.55
Ca­pac­ity (mAh)
16
Diameter (mm)
5.8
Height (mm)
2.1
380
1.55
82
9.5
3.6
Model
380
Volt­age (V)
1.55
Ca­pac­ity (mAh)
82
Diameter (mm)
9.5
Height (mm)
3.6
381
1.55
50
11.6
2.1
Model
381
Volt­age (V)
1.55
Ca­pac­ity (mAh)
50
Diameter (mm)
11.6
Height (mm)
2.1
384
1.55
45
7.9
3.6
Model
384
Volt­age (V)
1.55
Ca­pac­ity (mAh)
45
Diameter (mm)
7.9
Height (mm)
3.6
386
1.55
130
11.6
4.2
Model
386
Volt­age (V)
1.55
Ca­pac­ity (mAh)
130
Diameter (mm)
11.6
Height (mm)
4.2
389
1.55
80
11.6
3.1
Model
389
Volt­age (V)
1.55
Ca­pac­ity (mAh)
80
Diameter (mm)
11.6
Height (mm)
3.1
390
1.55
60
11.6
3.1
Model
390
Volt­age (V)
1.55
Ca­pac­ity (mAh)
60
Diameter (mm)
11.6
Height (mm)
3.1
391
1.55
50
11.6
2.1
Model
391
Volt­age (V)
1.55
Ca­pac­ity (mAh)
50
Diameter (mm)
11.6
Height (mm)
2.1
392
1.55
45
7.9
3.6
Model
392
Volt­age (V)
1.55
Ca­pac­ity (mAh)
45
Diameter (mm)
7.9
Height (mm)
3.6
393
1.55
80
7.9
5.4
Model
393
Volt­age (V)
1.55
Ca­pac­ity (mAh)
80
Diameter (mm)
7.9
Height (mm)
5.4
394
1.55
79
9.5
3.6
Model
394
Volt­age (V)
1.55
Ca­pac­ity (mAh)
79
Diameter (mm)
9.5
Height (mm)
3.6
395
1.55
55
9.5
2.7
Model
395
Volt­age (V)
1.55
Ca­pac­ity (mAh)
55
Diameter (mm)
9.5
Height (mm)
2.7
396
1.55
32
7.9
2.6
Model
396
Volt­age (V)
1.55
Ca­pac­ity (mAh)
32
Diameter (mm)
7.9
Height (mm)
2.6
397
1.55
32
7.9
2.6
Model
397
Volt­age (V)
1.55
Ca­pac­ity (mAh)
32
Diameter (mm)
7.9
Height (mm)
2.6
399
1.55
53
9.5
2.7
Model
399
Volt­age (V)
1.55
Ca­pac­ity (mAh)
53
Diameter (mm)
9.5
Height (mm)
2.7

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These batteries, especially in button cell design are primarily used in watches and therefore also referred to as “watch batteries.”Due to the variety of available sizes, their capacity and reliability, these batteries are also used in other electronic devices, such in medical technology.

Silver oxide batteries have to be disposed of properly in Germany according to the Battery Act (BattG) (and in many other countries as well, because the BattG is based on a European directive). Batteries are collected at retail locations in containers provided for that purpose. Batteries should not be disposed of in any other waste collection containers or in the environment because they contain contaminants and recoverable materials.

Silver oxide zinc cells (short: “silver cells”) are primary cells. They are commercially mainly available as button cells and carry the IEC designation “SR.” In Europe, however, a three-digit number (such as 377) is more common.

The negative pole of a silver oxide zinc cell consists of zinc powder, which is oxidized in the course of discharge. The positive pole is made of silver oxide which is reduced to elemental silver upon discharging. When disposing of these batteries, the pure silver is recovered. Diluted potassium hydroxide (or sodium hydroxide) is used as the electrolyte. The nominal voltage of such a cell is about 1.55 V. It is particularly advantageous that the voltage remains almost constant during discharge.

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