This invention pertains to a Reserve Battery activated by low shock and low spin. These types of batteries can be gainfully employed especially in the fuze of the rockets used by the Military. In such applications, the Battery must be activated only when the rocket is fired. These Batteries are convenient because they can be activated even at very low shocks and spins immediately on firing, their long shelf life, high energy density, capability to operate at very low sub-zero to high terrestrial temperatures with rapid activation.

State of the art electronic fuzing systems for controlling projectile warheads, rockets and shells are well known in the art. Fuze electronics may include controllers, timing circuitry, and various sensors. In addition, the fuze electronics may include a safety and arming mechanism to ensure safety in handling the ammunition as well as reliable functioning of the ammunition at a predefined moment. There is no doubt that Reserve batteries represent reliable sources of portable electrical power coupled with good storage life and are designed to be activated very quickly with little degradation in performance over time. Once activated, the reserve Battery under our invention can electrically power a circuit instantly. No maintenance is required for the reserve Battery while in storage. Hence it can be assembled in the fuze permanently.

The Reserve Battery under our invention used as one of the sources of in-flight electrical power for components of artillery projectiles, physically separate a reservoir filled with electrolyte and cell electrodes. The Battery cells are stored in dry condition. The electrolyte is stored in the fragile glass ampoule. Once the electrolyte comes in contact with the electrodes, the current generation commences. Based on the current requirement, voltage, duration, activation time and the storage life required, one has to select the active components, mode of activation, activation mechanism, surface area of the electrode, volume of the electrolyte, cell geometry and number of the cells during the design of the Battery.

The unique feature of the Battery under our invention is that when artillery shell is fired from the weapon, even at low shock due to set back force imparted on the projectile and with low spin rate of the projectile, the activation mechanism can break the ampoule causing the flow of electrolyte towards the electrodes. These batteries in assembled condition can have a shelf life exceeding twenty years while stored at temperatures ranging from -54°C to +70°C and also comply with the requirements of MIL-STD 331C , and MIL-STD 81OG.

Hence we have come out with a novel design which is not only highly reliable in meeting the stringent specification requirements of the military but also is less expensive though involving a highly innovative design. These batteries will not activate from momentary shocks in the order of 6000'g's or jerks when ammunition is accidentally dropped, but will be fully activated even when subjected to very low shock and low spin simultaneously encountered by the Battery during firing. Similarly, the Battery can withstand extreme climatic conditions during storage and can perform reliably even at extreme temperature conditions.

Accordingly, the invention pertaining to a Reserve Battery activated by low shock and low spin comprising a cell stack arrangement having lithium and carbon electrodes / Lead and Lead di oxide electrodes separated by separators, a glass / plastic ampoule containing Thionyl Chloride electrolyte/ Flow boric acid, an activating system with ampoule breaking mechanism and a housing in which the said components are placed; characterized in that a glass / plastic ampoule holding the liquid electrolyte, assembled in a central former over an annular ring, kept under tension by means of a spring 'a' held in the top former; a combination of shock safety lock arrangement assembled in the bottom former and spin safety lock arrangement assembled in the top former to keep the central former and the activation system in position until activation;a cell stack arrangement, with mono-polar or bipolar electrodes in the form of series of annular rings kept apart by means of a separator selected form cellulosic paper, polythene separator film, nylon separator film, or non woven glass mat separator wherein such cell stacks are placed vertically, one over the other and separated by means of corresponding number of cell cases or cups made of plastic material which act as an insulating medium; an ampoule breaking mechanism having the spring 'a' capable of applying sufficient pressure on the ampoule placed over an anvil when the central former is disengaged from the top former, due to the combined action of shock lock and spin safety lock arrangement, when the Battery is subjected to simultaneous shock and spin during firing of the ammunition; a Battery case holding the above items and closed by a Battery top cover and the Battery bottom lid having a fuze locater pin and the positive terminal, the negative terminal being the Battery body.

The state of the art manufacturing method followed in the preparation of the electrodes and its unique activation system in combination with shock lock pin and spin lock pin combined with fast activation to have the desired out put voltage is one specialty of our invention. The method of preventing the current leakage is another unique feature of our invention, where in the electrode stack arrangements are individually placed and separated by a plastic cup.

Now the invention will be described in more detail with reference to the accompanying drawings bringing out a number of embodiments of the arrangement according to the invention in which figures and descriptions are given as under.

Fig 1 exploded view of low shock cum low spin activated Reserve Battery Fig 2 Sectional view of Battery Fig 3 Isometric view of the Cell stack arrangement (with details) .

Fig 4. Isometric view of the Battery lid

Fig 5. Sectional view of the top former

Fig 6. Sectional view of the central former

Fig 7. Sectional view of bottom Former

Wherein,

(1) Battery top cover, (2) Spring 'a' (to keep the ampoule under tension), (3) Top former, (4) Spring 'b' (for keeping the spin lock pin under tension), (5) Spin lock pin, (6) Shock lock pin, (7) Central former, (8) Spring 'c' (for keeping the drop safety lock pin under tension), (9) Flexible rubber sleeve, (10) Glass ampoule, (11) Annular ring (for locking ampoule in the central former), (12) Bottom former, (13) Battery case, (14) Cell stack arrangement, (15) Cell stack support disc (also used for locating anvil), (16) Anvil, (17) Battery bottom lid, (18) Fuze locater pin, (19) Positive terminal, (20) Glass to metal seal, (21) Electrolyte, (22) Spin lock cavity, (23) Shock lock cavity, (24) Central former - top former lock slot, (25) Cell case, (26) Carbon electrode, (27) Separator, (28) Lithium electrode The major components of the low shock and low spin activated Reserve Battery are a glass ampoule (10) holding the liquid electrolyte (21), assembled in a central former (7) over an annular ring (11), kept under tension by means of a spring 1 (2) held in the top former (3); a combination of shock safety lock and spin safety lock arrangements which keeps the central former and ampoule in position until activation; cell stack arrangement (11), having lithium electrodes (28) and carbon electrodes (26) with separator (27) placed suitably; an ampoule breaking mechanism having an anvil (16) placed below the ampoule. The spring 1 (2) applies sufficient pressure on the ampoule in such a way that when the central former is disengaged from the top former, due to the combined release of shock safety lock and spin safety lock arrangements, when the Battery is subjected to simultaneous shock and spin above the threshold level. The above components are placed in a Battery case (13) and closed by a Battery top cover (1) and the Battery bottom lid (18) having a fuze locater pin (18) and the positive terminal (19). The negative terminal is the Battery body.

The details of each of the components mentioned above and their role in the overall functioning of the Battery are as under.

The glass ampoule (10) is made from glass tube, preferably of boro silicate chemistry, and will hold the electrolyte in it, as boro silicate glasses are known for having very low coefficients of thermal expansion (~3*10"06/°C at 20°C), making them resistant to thermal shock, more so than any other common glass. Such glass is less subjected to thermal stress and is commonly used for the construction of reagent bottles. Electrolyte used is Thionyl chloride, with additives selected from chlorides of potassium, aluminium, and lithium. The electrolyte is filled in the glass ampoule, preferably in a dry inert atmosphere with a very low relative humidity and low temperature, and then the neck is closed suitably by tig welding or flame welding or laser welding the neck of the glass ampoule to prevent the electrolyte to come out of the it before the Battery is activated. The glass ampoule is located at the stem portion of the central former (7) below the spring 'a' (2) and above the anvil (16). The glass ampoule is held under tension by the said spring 'a'. To protect the glass ampoule (10) from breakage due to tension of the spring 'a' and mechanical shocks during transportation, a flexible rubber sleeve (9) preferably made of viton rubber is provided on the top of the glass ampoule (10) and below the spring 'a'. Further, the same flexible rubber sleeve also protects the neck of the glass ampoule (10) when the Battery is subjected to accidental shocks.

The former used in the Battery is divided into three parts viz top former (3) central former (7), bottom former (12) and hold the unique activation mechanism including the shock safety lock & spin safety lock arrangements, spring a' (2) and the glass ampoule (10).

The top former (3) is hollow, cylindrical in shape and closed at the top and is made of plastic preferably PTFE. Provision is made in the top former to have a cylindrical hole matching with the stem part of central former (7). Further, the top former is provided with two spin lock cavities (22) diametrically opposite to each other on the walls of the former to locate the two spin safety lock arrangements. The top former is also provided with two holes diametrically opposite to each other, at the base, for enabling the pins of shock safety lock arrangement to enter and interlock onto the pins provided for the spin safety lock arrangement.

Central hollow former (7) has a stem part with less diameter on the top side, having a cavity to hold the spring 1 (2) and a bottom part with a larger diameter having a cavity to hold the glass ampoule (10). The bottom of the central hollow former is closed by means of an annular ring (11) made of Polytetrafluroethylene or viton rubber having the inner diameter slightly more than that of the ampoule for comfortable seating of the ampoule.

The bottom former (12) is also made of plastic and is in hollow cylindrical shape, having two shock safety lock arrangement cavities (23) at the top diametrically opposite to each other, to assemble the shock safety lock arrangement. The inner diameter of the bottom former is such that the lower portion of the central former can be snugly fitted into it. The outer diameter of the bottom former will match with the outer diameter of the top former. The pin of the shock safety lock arrangement assembled in the bottom former will in turn lock the pin of the spin safety lock arrangement assembled in the top former when assembled.

Cell stack arrangement comprises of lithium electrode (28) and carbon electrode (26) in the form of series of annular rings and electrically isolated by means of a separator (27) selected form cellulosic paper, polythene film, nylon film or glass mat, preferably a non woven glass mat separator. Such cell stacks are placed vertically, one over the other and separated by means of corresponding number of cell cases (25) which acts as an insulating medium and prevent electrical short circuiting of the Battery. These cell cases are made of plastic material preferably Polytetrafluroethylene. Alternatively, each of these cell stacks are separated from one another by a plastic or a phenolic disc, whose inner diameter is less than the inner diameter of the cell stacks, while maintaining the outer diameter of the said disc to be more than the outer diameter of the cell stack. The outer surface of such stacks are potted with suitable binder or heat sealed or heat sealed and potted prior to assembly in to the Battery case for effective insulation. These plastic cup or discs also act as an insulation barriers towards the inner side of the electrode stack arrangement, thereby preventing leakage currents when electrolyte flows into the cells.

In one of the embodiments under this invention, the lithium electrode (28) is made by pressing a blanked lithium metal disc of predefined thickness on a metal wire mesh selected from nickel, stainless steel, silver or any suitable metal, to which a nickel strip which acts as current collector is welded or soldered before the pressing process commences. The entire process is done in a dry inert atmosphere with very low relative humidity and low temperature, as lithium is highly reactive and hydrolyzes even if subjected to atmospheric moisture, and can form nitrate compounds with atmospheric air in presence of moisture. The carbon electrode (26) is made by pasting a mixture of carbon powder and a binder, preferably Polytetrafluroethylene suspension on a metal wire mesh selected from nickel, stainless steel, silver or any suitable metal, to which a nickel strip which will act as current collector is attached by resistance welding or by soldering. The thickness of the lithium metal is chosen based on discharge duration. One lead from the carbon electrode (first in the series of annular cells) is connected to the positive terminal (19) of the Battery. This lead together with the cell stack arrangement is insulated from the Battery bottom lid and Battery case by means of a cell stack support disc (15) made of plastic material and placed suitably at the base of the cell stack arrangement. This cell stack support disc is also provided with a groove for locating anvil (16) firmly. This positive terminal (19) to which lead of the carbon electrode (26) is soldered is fixed to the Battery bottom lid (17) via a glass to metal seal (20). One lead from the extreme lithium electrode (last in the series of annular cells) is connected to the Battery case (13) preferably by resistance welding. The nickel strip of lithium electrode of the first annular cell is connected to the nickel strip of carbon electrode of the second annular cell preferably by resistance welding. Alternatively they can be soldered. The nickel strip of lithium electrode of the second annular cell is connected to the nickel strip of carbon electrode of the third annular cell and so on. The nickel strip of lithium electrode of the penultimate cell is connected to the nickel strip of the carbon electrode of last cell to complete the series connection. This arrangement is effectively sealed at the area of connection by coating with a sealant mixture containing a resin and an accelerator. This arrangement is cured to ensure effective sealing and insulation.

In another embodiment under this invention, cell stack is designed as bipolar. In this model, plastic or phenolic sheet with or without copper mask on either side and plated with suitable metal is blanked in the shape of annular disc, metal wire mesh selected from nickel, stainless steel, silver or any suitable metal is fixed to one side of the plastic or phenolic sheet and Lithium metal is pressed over this metal wire mesh selected from nickel, stainless steel, silver or any suitable metal. On the other side of the said disc, another metal wire mesh selected from nickel, stainless steel, silver or any suitable metal pasted with carbon power mixed in a binder solution, preferably Polytetrafluroethylene and cured, is fixed. These two electrodes are welded at a number of spots over surface of the plastic disc. This forms one set of bipolar electrode. Series of such bipolar electrodes are placed one over another with lithium and carbon electrodes facing one another, and separated by a glass separator preferably made of glass mat.

In yet another embodiment under this invention, cell stacks are designed as bipolar. But here, metal powder slurry selected from nickel, stainless steel, silver, or any suitable metal powder slurry, made by mixing nickel, stainless steel, silver, or any suitable metal power with a suitable binder preferably carboxy methylcellulose, is pasted on both sides of the sheet and sintered. To one side of the said sintered sheet, carbon paste is applied and cured. The said sintered sheet after curing is blanked in the shape of annular disc to form a carbon electrode. To the other side of the sintered disc, Lithium metal sheet blanked in the shape of an annular disc is pressed to form a lithium electrode. Series of such bipolar electrodes are placed one over the other, such that lithium and carbon face one another and are separated by a non woven glass mat separator.

Cell stack support disc (15) located at the base of the cell stack arrangement ensures that the electrolyte does not come into contact with the metallic Battery bottom lid and prevents from shorting of the Battery. The cell stack support disc (15) is provided with a hole for passing the positive terminal lead of the cell stack arrangement.

The spin safety lock arrangement is assembled in the top former (3) comprising of spin lock pin (5) kept under tension by means of a spring 'b' (4) to ensure firm locking of the top former and central former during storage and even during accidental fall of the Battery. The pin will glide from the slot only when the Battery is subjected to a simultaneous shock & spin during actual firing conditions wherein the locking pins of the shock safety lock arrangement are released.

The shock safety lock arrangement assembled in the bottom former (12) comprising of shock safety lock pin (6) kept under tension by the means of a spring 'c' (8) to ensure firm locking of the spin safety lock arrangement, when the Battery is subjected to high spin without simultaneous shocks. The shock safety lock pin will glide from the slot and release its lock on the spin safety lock arrangement only when the Battery is subjected to a simultaneous shock & spin during actual firing conditions.

The Spring 'a' (2) is located inside the central former suitably in a compressed condition over the ampoule. The compression strength of the spring is so selected that the central former does not disengage itself from the spin safety lock arrangement either during long storage or during accidental fall of the Battery. But at the same time the compression strength of the spring is sufficient enough that during the real time firing of the ammunition, it forces the ampoule on to the anvil (16) and get it crushed, so that electrolyte is released into the voids in the annular electrode stack arrangement, and activate the Battery. The anvil is made from foil or a block of solid metal or plastic having a longitudinal cutter facing upward or a plurality of pins located strategically, to puncture and simultaneously break the ampoule, preferably a shear cut. This design also helps to flow the electrolyte from the ampoule once it is broken, more or less in a uniform way into the annular spaces of the cells and from where it enters in the voids between the annular cell stacks. Thus it leads to the activation of the cell and generation of electrical power.

The Battery case (13) can be made of metal, preferably nickel or SS 304 or plated MS or any suitable metal/ alloy to withstand the corrosive action of electrolyte. The shape is selected from any suitable profiles like cylindrical, square, conical, or based on the customer's requirement. The size of the case depends on the number of cells used in the Battery as per the voltage requirements. The Battery case is provided with a Battery top cover (1) and bottom lid made nickel metal or SS 304 or plated MS or any suitable metal/ alloy matching with the material of the Battery case. The bottom lid is provided with two pins. One is the fuze locater pin (18) while the other pin is the positive terminal (19) fixed to the lid by means of a glass to metal seal (20).

As explained, one of the most important safety aspect of this invention is that the Battery does not activate when dropped from a mandatory height of upto 1.5 meters feet, as required by the MIL STD wherein the Battery is subjected to a momentary high shock in the order of 6000 'g'. The Battery can activate only when subjected to both shock and spin simultaneously. This is one of the special features of this Battery. Another feature of this invention is that it can activate even at a very low shock in order of 10 'g' or more and spin of 100 rpm or more.

Another most important feature of the Battery under our invention is that the Battery is activated only when both the shock releasing pin and spin releasing pins are made to relocate from their original slots. This is ensured by selecting the springs with right compressive strength which can deflect sufficiently to allow the locking pins to move away from their grooves, when subjected to simultaneous shock and spin. Till such time, the simultaneous shock and spin are not applied to the Battery, the ampoule will not be released. In case of drop, the shock releasing pins would deflect but this deflection as it is does not suffice to release of ampoule, as the spin releasing pins require a specified spin to generate centrifugal force for releasing the spin release pins from their designated slots. Similarly, only spin alone cannot release the central former holding the ampoule, as the shock releasing pins will lock the spin releasing pins, thereby rendering the spin releasing pins immovable even when the Battery is subjected to spin. Upon simultaneous application of shock and spin the central former holding the ampoule is pushed by the spring positioned above the ampoule, which is under tension and enable the Battery to be activated.

Special Features:

• This Battery is designed to activate at very low g value, of 10 'g' or more and spin of 100 rpm or more which is not possible in the contemporary Lithium Reserve batteries

• The former is designed in such a way that the inner walls of the former act as guide for the ampoule to directly fall on to the anvil.

• Flexibility in increasing the voltage by introducing plurality of electrode stacks

• The Battery is designed such that it does not activate during free fall when dropped from a height of up to 1.5 meters, as required by the MIL STD wherein a the Battery is subjected to a momentary high shock in order of 6000 'g.' but can activate only when the Battery is subjected to both shock and spin. This is one of the special features of this Battery.

Some of the features according to one of the preferred embodiments under which prototype is made are given below by way of reference and is not a limitation, as possibilities exist to increase the capacity and mode of activation by suitably altering without deviating from the ambit of this invention.

General Characteristics
1. Electro chemistry: lithium/thinly Chloride(Li/SOCI2)
2. Storage Life: 20 years
3. Configuration: Multi-cell stack as per voltage requirement Performance Characteristics

1. Voltage: 12.0 to 18.0 V
2. Current: 200 mA
3. Capacity: 2.0 mAh
4. Activation Time: < 250 milli seconds
5. Run Time: >30 seconds Dimensions

1. Diameter (nominal): 50.0 mm
2. Length (nominal): 70.0 millimeters (w/o terminals)
3. Weight (nominal): <100.0 grams

Physical Characteristics

1. Operating Temperature Range: -40°C to +70°C
2. Storage Temperature: -54°C to +70°C
3. Connector: 2 Pins; 1 for pin acts as the positive terminal, the other terminal being the body, 1 pin is for locating the Battery into the fuze.

4. Activation Mechanism: Simultaneous shock & spin
5. Case & Mounting Flange: Stainless Steel 304

Environmental characteristics

1. Designed to meet the requirements of MIL-STD 331C
2. Designed to meet the requirements of MIL- STD 810G Environmental safety requirements

Effort had been made to bring out a few of the embodiments under this invention to bring out the novelty of the invention. But it is to be understood that the invention is not limited in its application to the details of construction or to the arrangements of the components set forth in the above description and illustrated in the drawings. This invention is capable of other embodiments and can be practiced and carried out in various ways. Further, it is to be understood that the phraseology and terminology employed herein are only for the for the purpose of the description and should not be regarded as limiting factor. Variations and modifications can be effected within the spirit and scope of the invention.

We Claim

1. A Reserve Battery activated by low shock and low spin comprising a cell stack arrangement having lithium and carbon electrodes/ Lead and Lead di oxide electrodes separated by separators, a glass/ plastic ampoule containing Thionyl Chloride electrolyte/ Fluo boric acid, an activating system with ampoule breaking mechanism and a housing in which the said components are placed; characterized in that

a) A glass/ plastic ampoule (10) holding the liquid electrolyte, assembled in a central former (7) over an annular ring (11), kept under tension by means of a spring 'a' (2) held in the top former (3)

b) A combination of shock safety lock arrangement assembled in the bottom former (12) and spin safety lock arrangement assembled in the top former (3) to keep the central former (7) and the activation system in position until activation

c) Cell stack arrangement (11), with mono-polar or bipolar electrodes in the form of series of annular rings kept apart by means of a separator (27) selected form cellulosic paper, polythene separator film, nylon separator film, or non woven glass mat separator wherein such cell stacks are placed vertically, one over the other and separated by means of corresponding number of cell cases (25) or cups made of plastic material which act as an insulating medium

d) An ampoule breaking mechanism having the spring 'a' (2) capable of

applying sufficient pressure on the ampoule placed over an anvil (16) when the central former is disengaged from the top former, due to the combined action of shock lock and spin safety lock arrangement, when the Battery is subjected to simultaneous shock and spin during firing of the ammunition

e) A Battery case (13) holding the above items and closed by a Battery top cover (1) and

f) The Battery bottom lid (17) having a fuze locater pin (18) and the positive terminal (19), the negative terminal being the Battery body.

2. A Reserve Battery activated by low shock and low spin as claimed in claim 1 having a spin safety lock arrangement assembled in the top former (3) comprising of spin lock pin (5) kept under tension by means of a spring 'b' (4) capable of locking of the top former (3) and central former (7) during storage and even during accidental fall of the Battery and at the same time capable of sliding from the slot when the locking pin of the shock safety lock arrangement is released during actual firing wherein the Battery is subjected to a simultaneous setback shock and spin.

3. A Reserve Battery activated by low shock and low spin as claimed in claim 1 having a shock safety lock arrangement assembled in the bottom former (12) comprising of shock lock pin (6), or by any other mechanical arrangement to unlock during shock kept under tension by the means of a spring 'c' (8) or by any other mechanical arrangement to unlock during shock, capable of locking of the spin safety lock arrangement by any mechanical means during storage and even when subjected to high spin without simultaneous shocks and at the same time capable of sliding from the slot when the locking pin on the spin safety lock arrangement is released during actual firing wherein the Battery is subjected to a simultaneous setback shock and spin.

4. A Reserve Battery activated by low shock and low spin as claimed in claim 1 wherein the lithium electrode (28) is made by pressing a blanked lithium metal disc of predefined thickness on a metal mesh selected from nickel, stainless steel, silver or any suitable metal, to which a nickel strip which acts as current collector is welded or soldered before the pressing process commences, while as the carbon electrode (26) is made by pasting a mixture of carbon powder and a binder, preferably Polytetrafluroethylene suspension on a metal mesh selected from nickel, stainless steel, silver or any suitable metal, to which a metal strip which will act as current collector is attached by resistance welding or soldering and one lead from the carbon electrode (first in the series of annular cells) is connected to the positive terminal (19) of the Battery and a cell stack support disc (15) made of plastic material placed suitably at the base of the cell stack arrangement capable of insulating the said lead together with the cell stack arrangement from the Battery bottom lid and Battery case.

5. A Reserve Battery activated by low shock and low spin as claimed in claim in claim 1 wherein the lithium electrode (28) and carbon electrode (26) are separated by means of corresponding number of plastic discs, whose inner diameter is less than the inner diameter of the cell stacks while maintaining the outer diameter of the plastic disc more than the cell stack so as to function as insulation barrier.

6. A Reserve Battery activated by low shock and low spin as claimed in claim 1 wherein the said cell stack comprising of series of bipolar electrodes placed one over another with lithium and carbon electrodes facing one another and separated by a glass separator preferably made of non woven glass mat wherein the base material is made from an annular plastic or phenolic sheet, over one side of which is fixed with metal mesh selected from nickel, stainless steel, silver or any suitable metal and then pasted with lithium metal sheet and the other side which is fixed with another metal mesh selected from nickel, stainless steel, silver, or any suitable metal and then pasted with carbon power mixed in a binder solution, preferably PTFE and welded at a plurality of spots on the surface of the electrode pair.

7. A Reserve Battery activated by low shock and low spin as claimed in claim 1 wherein the said cell stack comprising of series of bipolar electrodes placed one over another with lithium and carbon electrodes facing one another and separated by a separator preferably made of glass mat wherein a metal disc substrate is pasted with metal powder slurry mixed with a binder on both the side and sintered to form a carbon electrode by applying carbon paste on one side and curing prior to blanking in the shape of annular disc and lithium metal annular disc is pressed over the other side of the blanked sintered nickel disc to form a lithium electrode.

8. A Reserve Battery activated by low shock and low spin as claimed in claim 1 which is capable of activating at a 'g' value not less than 10 'g' and spin of not less than 100 rpm, when subjected to both shock and spin simultaneously at the same time not capable of activating during free fall when dropped from a height of up to 1.5 meters, or when subjected to a momentary high shock in order of 6000 'g'.

9. A Reserve Battery activated by low shock and low spin as claimed in claim 1, is capable of operating at a temperature range between -40°C to +70°C and withstanding a storage temperature range of -54°C to +70°C and meeting the requirements of MIL-STD 331C, and MIL- STD 810G.

10. A Reserve Battery activated by low shock and low spin as claimed in claim 1 substantially herein described with reference to and illustrated in figure 1 to 7 of the accompanying drawings.