Magnesium/silver chloride batteries

Figure 17.28 illustrates two of the magnesium/silver chloride batteries currently manufactured. These batteries are used in the following types of applications ... 

Although standard lines of water-activated batteries were once manufactured, most batteries now are designed and manufactured for specific applications. Tables 17.8 and 17.9 list some of the standard and special purpose magnesium/cuprous chloride and magnesium/ silver chloride batteries that were manufactured. Of these, only the two batteries illustrated in Fig. 17.28 are currently manufactured. 

Table 63.2 SAFT magnesium-silver chloride batteries...

The magnesium/silver chloride seawater-activated battery was developed by Bell Telephone Laboratories as the power source for electric torpedoes. This work resulted in the development of small high-energy-density batteries readily adaptable for use as power sources for sonobuoys, electric toipedoes, weather balloons, air-sea rescue equipment, pyrotechnic devices, marine markers, and emergency lights. 

TABLE 17.9 Magnesium/Silver Chloride Water-Activated Batteries... 

McMurdo Instruments magnesium-silver chloride seawarer batteries 63/3... 

McMurdo Instruments Ltd supply a range of magnesium-silver chloride cells (Aquacells). which are activated by seawater and have obvious applications in marine and aircraft safety lights, buoys and flashing beacons. These batteries have a long storage life provided they are kept in a sealed condition. Once unsealed and immersed in water they must be considered expended. They cannot be recharged. 

Figure 63.1 SAFT AM34, 1.5 V, 7.5 A magnesium-silver chloride seawater-activated batteries influence of salinity and temperature on cell discharge performance (Courtesy of SAFT)...

In previous sections of this chapter, magnesium anodes have been considered as replacements for zinc in Leclanche and air-depolarized cells. In sea water-activated reserve batteries, magnesium anodes are coupled with either silver chloride, lead chloride, manganese dioxide or, occasionally,... 

Silver chloride-magnesium batteries These are used in sonarbuoys, beaeons, emergeney equipment, torpedoes, flares, mines, pingers. balloons and life-jaekets. 

Primary batteries, silver—zinc and silver chloride-magnesium seawater batteries secondary batteries, nickel-cadmium, silver—zinc, silver-cadmium, lithium-sulphur dioxide, lithium-thionyl chloride. 

Within each Part, chapters are included on all available types of primary batteries, secondary batteries and batteries available in primary and secondary versions. The primary batteries include carbon-zinc, carbon-zinc chloride, mercury-zinc and other mercury types, manganese dioxide-magnesium perchlorate, magnesium organic, lithium types (sulphur dioxide, thionyl chloride, vanadium pentoxide, iodine and numerous other lithium types), thermally activated and seawater batteries. Batteries available in primary and secondary Corms include alkaline manganese, silver-zinc, silver-cadmium, zinc-air and cadmium-air. The secondary batteries discussed include lead-acid, the nickel types (cadmium, iron, zinc, hydrogen), zinc-chlorine, sodium-sulphur and other fast ion types. 

Varta SA, Rue Uyttenhove 49—51, B-1090 Brussels Pdmary batteries, zinc-alkaline manganese dioxide, mercury-zinc carbon-zinc, Leclanchd, magnesium types, lithium types, silver oxide-zinc, zinc chloride Leclanche, zinc-air. 

Varta SpA, Via Teitulliano 70, 20137 Milan Primary batteries, zinc—alkaline manganese dioxide, mercury—zinc, carbon—zinc Leclanche, magnesium types, hthium types, silver oxide—zinc, zinc chloride Leclancti6, zinc—air, secondary batteries, alkaline, nickel—iron, nickel—cadmium, silver—zinc, silver—cadmium. 

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