The alkalines' discharge curve looks like, well, alkalines The silver oxides' discharge curve is more like nicads but at a higher voltage I've been able to find VARTA SR44s on the Web for about a buck a pop (I don't recall where) Since I use SR44s in some of my camera gear, that's the only button cell I stockNomina voltage (V) Nomina capacity (mAh) Continuous standard load (mA) Operating temperature CR2 CR123A 170 006 1 2 0 30 2 0 7LR44 Battery Equivalent Buy now for $59 The LR44 Alkaline Battery is a longLasting Alkaline Button Cell Battery LR44 Alkaline Battery is compact in shape and economical value alkaline battery with a nominal voltage of 15V This alkaline battery provides long power life and excellent continuous power sources to your device
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Lr44 voltage curve-The LR44 battery is a alkaline button cell defined by its unique dimensions (116mm diameter x 54mm thickness) They typically feature up to 240mAh capacities, have a 15V voltage, and are primary (nonrechargeable) due to their alkaline chemistry LR44 batteries are often used in small devices like watches, alarm clocks, motherboards, medicalEnergizer 4pk 32 Batteries Lithium Coin Battery Energizer 49 out of 5 stars with 253 ratings 253 $449 MSRP $1299 Shipping not available Not at your store
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Like all our batteries in this range, SR44 uses silver oxide as the cathode or positive electrode, zinc as the anode or negative electrode and an alkaline electrolyte Compared to other batteries, a silver oxide battery has a higher open circuit potential (1,55V) It also has a flatter discharge curve than a standard alkaline batteryThe LR44 15V Battery is widely used in watches, calculators and medical devices A button cell battery is a small, round battery that is 116mm (0457 inch) in diameter and 54mm (021 inch) thick An alkaline battery is a battery that uses manganese dioxide and zinc to create a reaction, and it is an economical alternative to silver oxide batteries, while still providing high capacity and longVoltage (V) 0 30 60 90 Charging Time (Minutes) State of Charge Curve @05C 25℃ Voltage State of Charge State of Charge 1 150 0 10 30 40 50 60 70 80 90 100 Characteristics Curve 92 100 108 116 124 132 140 Voltage (V) 0 40min60min 5h 10h Discharge Time Different Rate Discharge Curve @25℃ 01C Different Rate Discharge Curve 2h 2C
Nominal Voltage 15V Nominal Capacity 1mAh Operating Temperature Range10℃ to 60℃ Diameter (inch) 0457inch Diameter (mm) 116mm Height (inch) 0213inch Height (mm) 54mm IEC (JIS) LR44 Mass (oz) oz Mass (g) 2gChart 1 Alkaline discharge curve Chart 2 Silver oxide discharge curve Comparing Equivalent Capacities If you use a lot of LR44 batteries, then the following info can be useful When shopping for an LR44 equivalent, you can compare battery capacity byA common LED is rated for 10 milliamps, but will light fairly well with only 12 milliamps You want to be on the lowend so your battery will last Pick your desired current on the left, and draw a horizontal line until it intersects the LED curve Then draw a vertical line and see what the voltage drop will be
LR44 Calculator Battery Swiss Made Rev LR4403 06/02 Renata SA Tel 41 (0)61 975 75 75 sales@renatacom CH4452 Itingen/Switzerland Fax 41 (0)61 975 75 95 wwwrenatacom Technical Data Sheet Specifications Chemical system Zinc / Manganese Dioxide, high drain Nominal Voltage 1,50 V Capacity 105 mAh, Discharge over 8,25 kΩ at °C to 0,9 VThe LR44 is a popular 15V alkaline "button" battery commonly used in calculators, watches, toys and other devices that draw very low current The battery maker name, initial voltage and other basic information are shown in the table below Fig1 Batteries used in the testStorage temperature 10 C ~ 25 C
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Maxell LR44 battery alkaline (pack of 2) overview and full product specs on CNETThere is not much, if any, difference at all They are both the same battery, made by different companies, but completely 100% interchangeable The list of similar batteries actually goes on a bit farther (I can't remember all of them), but LR44,Published LR44, AG13, LR1154, SR44, 303, 357 etc batteries are 116 mm in diameter and 54 mm in height (thus some models come with '1154' in their label) Their nominal voltage is 15 V and their capacity differs from manufacturer to manufacturer One of the reasons for confusion are different chemistries found in these batteries alkaline, silveroxide, zinc air and
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Nominal voltage 30V 23 Nominal capacity 210 mAh (on continuous discharge at ℃ under 15kΩ load to V endvoltage) 24 Outer dimensions Outer dimensions shall be as shown in Fig 1, Battery Dimensions 25 Standard weight 32 g 26 Country of Origin ChinaThe alkaline version is LR44 According to Energizer (who doesn't make SR44 and claim that the 357 is their equivalent) the 357 has a bit less mAH rating than their EPX76 silver oxide The voltage curve of the EPX76 is also a bit flatter than the 357 The 6 (alkaline) has about the same voltage curve as the 357 and the same mAH ratingThe voltage is more affected by the instantaneous current draw than by the charge level The consequence is that the instantaneous voltage is useless as a charge estimate if the instantaneous current draw is unknown This is quite different, for example, to a VARTA CP1654 A3 LithiumIon 1mAh rechargeable battery
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The necessary data to plot a frequency response curve for the voltage gain A VSD 11 Now disconnect the function generator and the 10kΩ resistor from the circuit 12 Connect the function generator to node (1) and connect the 10kΩ resistor to node (3) 13 Set the function generator to 1kHz, make sure the amplitude is still 100mVppRe What CR32 open circuit voltage is considered dead There is no rule, as long as one can measure some voltage, there is energy left As for usability it all depends on the device powered I use 32 in red dot gun sights and OK till 28VA discharge curve during discharge supplies a stable voltage until the end of the discharge life ˜ Highenergy density Highenergy density per unit volume provides approx twice as the amount of energy capacity as buttontype alkaline batteries ˜ Excellent discharge load characteristics
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Voltage, CCV Service, Hours Schedule Continuous Typical Drain @139V 04 milliamperes Load 68K ohm DESIGNED FOR USE ON CONTINUOUS LOW DRAIN (HIGH PULSE ON DEMAND) 0 25 50 75 100 125 0 40 Service (%) Temperature Service Effects 60 70 80 90 100 1012 Service (%) Storage Time (yrs) Storage Effects 40 C C 0C Anode Cap Gel AnodeAwarded by Thomas Construction Co The project is a new, four story, 136,592 SF, government office building that will provide office space, and a 35,000 SF, Emergency Operations Center, and 911 Call Center Our work is the electrical installation of 3,000amp switchgear and a separate 2,000amp switchgear backed up by (2) 500KVA generators500 µA), it can be seen that discharge follows the familiar curve and that the full mAh capacity can be accessed
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Following is a curve of the equivalent capacity of a 55AH sealed lead acid battery when discharged at rates from 222A to 275A Lithiumion and NiCad batteries have a low Peukart effect, and so high discharge rates don't reduce the capacity very much But an intermediate case is of great interestButton, coin, or watch cells A watch battery, button cell or coin battery is a small single cell battery shaped as a squat cylinder typically 5 to 25 mm (0197 to 0984 in) in diameter and 1 to 6 mm (0039 to 0236 in) high — resembling a button Stainless steel usually forms the bottom body and positive terminal of the cellIIRC silver oxide also has a flatter discharge curve than alkaline the voltage stays higher for longer, then tails off suddenly If you use LR44 cells in these calipers, the lower voltage manifests itself by putting the 'low battery' indicator on earlier than normal Fortunately the thing still actually works when the voltage is far
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10 of 10 found this helpful Do you?Figure 3 shows the voltage level of a CR32 coin cell battery as it is drained with continuous currents ranging from 500 µA to 30 mA When discharging the battery at a rate close to the rate stated in battery data sheets (<Rated capacity 130 (mAh) Cell size 116 x 54 (mm) Working temperature 10 C 60 C;
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Nominal Voltage 30 Volts Typical Capacity 235 mAh (to volts) (Rated at 15K ohms at 21°C) Typical Weight 30 grams (010 oz) Typical Volume 10 cubic centimeters (006 cubic inch) Max Rev Charge 1 microampere Energy Density 198 milliwatt hr/g, 653 milliwatt hr/cc Typical Li Content 0109 grams ( oz) Operating Temp30C to 60CSlightly used LR41 batteries in series have a higher voltage (33V) than my slightly discharged lithium cell (30V) Yet, an LED attached to the LR41 batteries is dimmer than the lithium cell Current seems limited through one out of the threeseriesLR41 batteries, though voltage appears to remain appropriately high14 of found this helpful Do you?
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The SR41 has a longer flatter voltage curve AC Curve 2 is similar to curve 1, but represents a cell with a higher internal resistance or a higher discharge rate, or both, compared to the cell represented by curve 1 As the cell resistance or the discharge current is increased, the discharge voltage decreases and the discharge shows the more sloping profile of Curve 2 Figure 1SYes No Report abuse The lr41 battery is for a mouth thermometer Amazon Customer
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Yes No Report abuse The difference is the chemistry of each batteryThe AG13 battery, also known as LR44 battery, is an alkaline zinc manganese button battery Its parameters are as follows Battery model AG13/LR44;Specification Button Cell LR44 1 SCOPE This specification applies to the following button cell LR44 (6, RW, V13GA, L1154) 2 Chemical System ZincManganese Dioxide (Potassium Hydroxide Electrolyte) 3 Nominal Voltage 1,50V 4 Standard Capacity 140 mAh (continuously discharge at °C under 6,8 k Ω
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Testing 9 Volt Batteries for mAH capacity and voltage sag during discharge Method 1 New Batteries were purchased from a retailer to make sure they were fresh and had full battery capacity 2 This test is not to compare batteries for normal operation, they are designed for very low current draw and these tests are for high current drawStandard Discharge Curve： 090 100 110 1 130 140 150 160 0 100 0 300 400 500 600 700 800 900 1000 Voltage (V) Hours of services Daily Period 24 Hrs / Day Temperature ±2℃ End Voltage 09 V 15KΩ 10KΩ 090 100 110 1 130 140 150 160 0 10 Voltage (V) Hours of services Loading 1KΩ Daily Period 24Electrical ≥ 1,55V off load voltage characteristics ≥ 1,54V on load voltage, under 22Kohms load, measuring time 0,3s (new battery) service output 490h new battery (tested within 30 days after delivery) 440h after 12 months storage at room temperature discharge load 22Kohms, daily discharge time 24h, endpoint voltage 1,2V
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Re SR44 vs LR44 Just copied some article here Performance Alkaline batteries have a relatively sloping discharge curve, meaning that as they wear down with use, the voltage will decrease The silver oxide batteries, however, have a flat curve, meaning they will maintain their voltage right up until they dieThe LR44 alkaline battery is a powerful, longlasting button cell Apart from its compact shape, this alkaline battery has economic value and a nominal voltage of 15V It works efficiently in both high and cold temperatures and is powered by the reaction between manganese dioxide and zinc, which in turn powers your devicesA suitable voltage for an AA and TripleA batteries is something in between 11V and 15V That means the battery has a full charge However, if the voltage drops to something below 11V is already a dead battery You may use a voltmeter to test how much power is
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Voltage 6 Format 357/303, LR44 Capacity 155MAH $1499 Select Pickup Store QTY QTY Product Review for Renata Battery Replacement for LR44 Button Cell Longlasting power for your coincelloperated devices such as household electronics like keyless entry systems, ebooks, toys, calculators, watches, heart rate and glucose monitorsThis LR44 button battery is used in a wide variety of applications, like calculators, thermometers, electronics toys, small radios, cameras, and other low drain equipment It is also a popular replacement battery for Lighted Fishing Bobbers This LR44 Alkaline Button Cell Battery is 155 Volt and has a capacity of 1 mAhThis item Maxell LR44 Batteries 10 Pack 1,00 ₹ In stock Ships from and sold by BrandHub1 Panasonic CR32/5BE Lithium Coin Battery Pack of 5 0,00 ₹ In stock Sold by Appario Retail Private Ltd and ships from Amazon Fulfillment FREE Shipping on orders over 499,00 ₹
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Alkaline LR44 batteries have a nominal voltage of 15 volts and cutoff voltage of 10 volt as the battery is being discharged, the output voltage drops more or less constantly The nominal capacity of LR44 batteries is in the mAh range, although some LR44 batteries claim a much larger capacity, comparable to silveroxide batteriesThe voltage of LR44 is continually dropping, whereas the silveroxide SR44 is constant and only reduces when almost discharged Alkaline LR44 batteries have a capacity of around 110 mAh, and silveroxide SR44 batteries' capacity exceeds mAh range Alkaline batteries come at a lower cost when compared to silveroxide batteriesLR44 starting voltage is about 1500 Volts SR44 starting voltage is about 1550 Volts Both are rated as 150 mA hours, but the discharge curves give very different operational life depending on the required voltage for the application The LR44 voltage drops over the duration of usage
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Specifications Voltage 155V Chemistry Silver Oxide Diameter 046in (116mm) Height 021in (54mm) Terminal Type Watch/Button Cell 10pcs Card Exell EBSR44 Silver Oxide Watch Cell Battery Also Known As 10 L 14/D 357 1128MP 1130SO 1131SO 1166A 157 228 2808 303 357 357BP 4276 541 675 A 6 6 61 AG13 AG13 CR44 D303 D303A genuine SR44 or 357 cell is hard to find, and the alkaline LR44, which is the same size button, and same nominal voltage, is very common and easy to find This alkaline LR44 cell is put into toys, laser pointers, etc, and has gotten very cheap because of the large quantities made in ChinaIEC Designation：LR44 3、Technical Specification 31 Dimension： Height (H) 54 0 04 mm Diameter (ψ) 116 0 025 mm 32 Average Weight：19 g 33 Nominal Voltage：15 V 34 Nominal Capacity：180 mAh (Discharge at 1KΩ to 09V ) 35 Typical Discharge Duration：145 hrs (Discharge at 1KΩ to 09V )
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