| CR2032 | 3-volt, Lithium, coin cell. Diameter: 20 mm. Thickness: 3.2 mm. Capacity: 220 mAh. For calculators, data organizers, PDAs, PC motherboards, test equipment, watches, numerous other devices. |
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| CR2025 | 3-volt, Lithium, coin cell. Diameter: 20 mm. Thickness: 2.5 mm. Capacity: 160 mAh. For calculators, data organizers, test equipment, watches, other devices. |
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| CR2016 | 3-volt, Lithium, coin cell. Diameter: 20 mm. Thickness: 1.6 mm. Capacity: 90 mAh. For calculators, test equipment, watches, other devices. |
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| CR1620 | 3-volt, Lithium, coin cell. Diameter: 16 mm. Thickness: 2 mm. Capacity: 68 mAh. For calculators, watches, other devices. |
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| 357/SR44 | 1.55-volt, Silver-oxide, button cell. Diameter: 11.6 mm. Thickness: 5.4 mm. Capacity: 190 mAh. For instruments, cameras, etc. Also used in some insulin pumps; if this is your need, see 357/MD, below. |
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| 357/MD | 1.55-volt, Silver-oxide, button cell for medical devices. This is the exact same product as 357/SR44 (above). Insulin pump users: This is the cell Animas Corp. recommends for use in the IR-1000 pump. You could buy a 12-pack at their online store for $24 (March, 2009) but you may like our price better, especially since we don't make you buy a dozen. We identify it as being for medical devices, and that is how the item will read on your printed invoice, if you order part no. 357/MD rather than 357/SR44 Order your pump batteries here, and pay with your PayFlex or other MSA or HSA card, and when PayFlex (or whoever) asks you to justify the charge, just send them a copy of your invoice, which will show that you purchased batteries for a medical device. |
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| D392/SR41 | 1.55-volt, Silver-oxide, button cell. Diameter: 7.9 mm. Thickness: 3.6 mm. Capacity: 45 mAh. For calculators, watches, cameras, mini-flashlights, etc. |
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| L91-2pack | 1.5-volt nominal, Lithium, penlite cell. Same dimensions as standard AA cell. Capacity: 2900 mAh. If you're tired of measuring your camera's battery life in seconds, then give these a shot, because they will last two to seven times longer, depending on the camera. Also for instruments, flashlights, insulin pumps and other medical devices (if that is your need, please see the next item below), etc. Note: The quantity "unit" is 2 cells, so enter 1 if you want 2, 2 if you want 4, etc. |
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| AA/MD-2pack | 1.5-volt nominal, Lithium, AA-size penlite cell for medical devices. This is the exact same product as L91 (above). Insulin pump users: This is the cell Animas Corp. recommends for use in the IR-1200, IR-1250 and IR-2020 pumps. You could buy a 2-pack at their online store for $7 (March, 2009) but you may like our price better. We identify it as being for medical devices, and that is how the item will read on your printed invoice, if you order part no. AA/MD-2pack rather than L91-2pack. Order your pump batteries here, and pay with your PayFlex or other MSA or HSA card, and when PayFlex (or whoever) asks you to justify the charge, just send them a copy of your invoice, which will show that you purchased batteries for a medical device. Note: The quantity "unit" is 2 cells, so enter 1 if you want 2, 2 if you want 4, etc. |
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| AA-4pack | Four, top-quality, standard-brand, 1.5-volt, alkaline AA cells, at a lower price than Enormogrocers. Of course, if you're looking for a really low price, they'll sell you their Big Question Mark brand. If you're like us, you've probably bought BQMs on occasion (hoping to save a few bucks) but regretted it later. Regret no more! Buy the genuine article here and save! Note: The quantity "unit" is 4 cells, so enter 1 if you want 4, 2 if you want 8, etc. |
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| AAA-4pack | Four, top-quality, standard-brand, 1.5-volt, alkaline AAA cells, at a lower price than Enormogrocers. Same deal as above, but in everyone's favorite smaller size. Fits micro-cameras, TV remotes, pagers, calculators, bike lights, etc. Note: The quantity "unit" is 4 cells, so enter 1 if you want 4, 2 if you want 8, etc. |
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Choosing the right coin cell Here's a question we hear often: What is the difference between a CR2025 and a CR2032, or between a CR2016 and a CR2025, or between a CR2016 and a CR1620? Here's another one: How do I select the right coin cell for my application? A battery with a part number consisting of BR or CR followed by four digits is a single-cell, Lithium product in a small, disk-shaped package. Its terminals are the metallic surfaces on either side. It is called a coin cell because it somewhat resembles a coin in size and shape (although its engravings are completely devoid of artistic merit and its date markings seem highly improbable). Actually, hardly anyone seems inclined to interpret the numbers as dates, which is just as well, because their correct interpretation is as follows:
Last two digits: Thickness in tenths of a millimeter Examples: a CR2032 is 20 mm in diameter and 3.2 mm thick, while a CR2016 is the same diameter (20 mm) but only half as thick (1.6 mm). A CR1620, on the other hand, is 16 mm in diameter and 2.0 mm thick. Note that these numbers should be considered nominal dimensions, as there may be very slight variations between brands in the same part number. However, in our experience, these differences are not discernible without the aid of a micrometer or a dial-indicator caliper. Every cell that we ship for a given part number will fit any standard socket or holder designed for a cell with that part number. So what's the difference between a CR2032 and a BR2032? Most Lithium cells have a nominal terminal potential of 3 volts. Like other primary cells, however, their voltage gradually diminishes as they discharge. Because of somewhat different design, the BR-type cells yield more uniform voltage over most of their useful life, but near end of life, their terminal voltage falls precipitously. CR-type cells, on the other hand, exhibit a more gradual decline in voltage over most of the discharge interval, and thus they may give somewhat longer service in circuits designed to tolerate a wide range of terminal voltage. They also cost less than equivalent BR-type cells. We don't always have BR-type cells in stock, but when we do have them, they will be mentioned somewhere on this site. If you're looking for them (or for anything else, for that matter), please use the box below to search for the type you need. |