More Lounge knowledge needed: those coin sized/shaped batteries 2016 2025 2032

[UTUSN]

I'm not lazy and will be doing my own laboring research on this internets thing, but very likely somebody already knows the answer, so why not.


Let's see whether I can be clear: Are the 2016 / 2025 / 2032 used for *different* apparatuses (pl?) or do the different numbers indicate the POWER or like that of the indicated battery and each apparatus can only use a "dedicated" 2016 or dedicated 2025 or dedicated 2032?

Am I being clear? Like, there's this little penlight/keychain light that comes from the factory with two 2016 batteries. Does this mean that ONLY 2016s can be used in it? Or are the 2025 or 2032 numbers indicative of stronger (or lesser) POWER and can those be used (with more?) power?

Later!1 Thanks.

[Phentex]

1. I think they are different sizes/thickness...

because whenever I have 2025s, I invariably need the 2032s. I don't think they are interchangeable.

[Chan790]

2. I believe you are correct. n/t

[SeattleVet]

3. They are different thicknesses.

If your device uses 2-2016 batteries it's running on 6 volts (2-3v batteries stacked). A single 2025 or 2032 is 3 volts, not the 6 that your device probably wants. A 2025 or a 2032 are physically the same diameter, but thicker than the 2016 and thus have more capacity (will last longer than a 2016 when a single button cell is used). The 2032 is 2x the thickness of a 2016, but only 3 volts.

There's a decent chart of battery sizes and (some) characteristics at http://en.wikipedia.org/wiki/List_of_battery_sizes

Hope this helps!

[UTUSN]

5. Yip, we're on the trail of it, matching what I found, but still have questions

It looks like a main difference is the thickness, the '32 being twice '16. It looks like the gadget I'm using might have room for TWO 2032s to replace the two 2016s, but the articles below seem to say that you would replace TWO 2016s with ONE 2032, but what EACH coin is 3V or are the two 2016s SIX V?

Really, what I'm getting at is whether the different 2016/2025/2032 would give BRIGHTER LIGHT, and would that be using ONE or TWO of the different coins?



*************QUOTE*************

What is the Difference Between a CR2016 and a CR2032? | eHow.com http://www.ehow.com/facts_7612253_difference-between-cr2016-cr2032.html#ixzz1o6Dyp9TP
[font size=5]What is the Difference Between a CR2016 and a CR2032?[/font]

The CR2016 and CR2032 batteries are both small "coin" batteries used in electronic devices such as watches, digital cameras, PDAs and keyless entry remotes. They can sometimes be used interchangeably. Knowing the key differences between these batteries will help you determine whether one can replace the other in a given device.



Battery Size

The CR2016 is 1.6mm thick and the CR2032 is 3.2mm thick. This difference in thickness may cause problems when trying to fit one battery into a device designed to take the other model. They are both 20mm in diameter.



Battery Power Output
The CR2016 provides 90 milliampere-hours, whereas the CR2032 provides about 220 mAh. Under the same usage settings, the CR2032 should provide power longer than the CR2016. Both are 3-volt batteries.


Battery Life

Under comparable circumstances, the CR2032 is designed to hold its charge longer than the CR2016, if they are rechargeable batteries. Most CR batteries are not rechargeable.




Battery Weight
The CR2016 weighs about 1.6 grams, and the CR2032 generally weighs 3 grams, which again can cause an issue with substitution, depending on the device in which you intend to use the battery.





http://wiki.answers.com/Q/Can_you_replace_a_CR2016_battery_with_a_CR2032
[font size=5]Can you replace a CR2016 battery with a CR2032?[/font]
Answer:

Both batteries are the same diameter and the same voltage. The CR2032 is twice as thick as the CR2016 and has a larger ah capacity. If the extra thickness is not a problem, the CR2032 will be a good replacement for the CR2016. Some mounting methods are thickness specific and others are not!



http://arstechnica.com/civis/viewtopic.php?f=23&t=67148
[font size=5] Battery Question - Can I use a 2016 or 2025 to replace a 2032?[/font]

You would need to stack two CR2016s to equal a CR2032. It's usually not optimal but I don;t know if a garage remote is sensitive enough to have a problem with it.

I replaced the two CR2016s in my Jeep remote with one CR2032 and it didn't last very long and acted flakey.

You can use a 2025 or 2016 to power it, you'd either need to bend a pin, or use a spacer.



You can't stack them. Stacking 2 CR2016s would get you 6V, and you would probably fry what you're using.

When you replaced two CR2016s with the 1 CR2032, you did not give enough voltage to the remote for it to work properly.

Hm, it looks like the thickness is the problem as the diameter of all three batteries is the same. The 2016 is definitely too thin to work, but the 2025 is pretty darn close to the 2032.


For a short-term hack, you could probably use some folded up aluminum foil to pad the battery (pressed against the + side only, so that it doesn't short the terminals). The difference in thickness between a 2032 and a 2025 appears to be 0.7mm, with a tenth of a milimeter or so of slack provided by the spring.

You don't want to do that for more than a couple of days, though.


I have replaced a 2032 with two 2016s and vice versa several times without problems.

*************UNQUOTE*************

[surrealAmerican]

4. As the other responses indicate ...

... it's the dimensions that are the difference here ...


... but why is it nobody seems to make rechargeable button batteries (and, of course, a recharger to go with them)?

[quakerboy]

6. Size.

I imagine there is a difference in the stored energy, but for usage purposes I believe the only difference is the thickness. I have successfully used 2 cr2016's in place of a dead cr2032 without any problems.

[UTUSN]

7. But if TWO 2032s would fit (replacing 2 2016s), no more BRIGHTNESS?

And the difference would be (only) longevity?

I'm trying to zero-in on the BRIGHTNESS of the light, or does that mean "voltage" and therefore not an issue since each of the coins or buttons is 3V?

[quakerboy]

8. I did not notice any difference

Granted, I was using it for a remote, so I wouldn't really be noticing a difference.

My assumption is that it would be the same as using two AA batteries in a flashlight. It should depend on whether you use them in parallel or in line.

[rug]

9. I'll ask my wife.

[UTUSN]

12. We know *exactly* what you mean!1 Bwa-ha-HAH!1 But why does your ... NEVERMIND!1 n/t

[krispos42]

10. Same size, same voltage, different capacities

The bigger the battery the more juice it holds (composition being equal, of course).

They're all the same diameter but different thicknesses, and thus contain different amounts of energy.



However, when you stack batteries positive-to-negative, you add the voltages. Just like in a flashlight... two "D" batteries end-to-end deliver 3 volts to the bulb, even though each battery only delivers 1.5 volts.

If you stick 2 thin 3-volt batteries end-to-end, you get six volts... which would really suck if your device was designed to run on only 3 volts.



If you need to put a thinner battery in a slot designed for a thicker battery, don't double them up... stick a penny or something in there to build up the thickness without adding voltage.

[UTUSN]

11. Thanks. I think I'm getting it now.So no doubling up of the THICKER ones to replace the thinner ones

Iow, what I was aiming at was to replace 2 thins (2016s) with TWO thicks (2025s or 2032s) and this would be a no-no (because of the size of the slot). What I thought I would be getting with the thicker ones was more BRIGHTNESS of the light (power), but each one of these buttons is 3V, so what we're saying here is that the THICKER ones "just" have more longevity NOT more power.

[krispos42]

13. Yes, you'd be getting more endurance from the same voltage.

The thicker ones have more total energy in them than the thinner ones, but all of the batteries operate at the same voltage and thus will feed the same power to the bulb. The bigger ones can deliver the same power for longer, though.

The analogy is having two cars identical except that one has a gas tank that holds 20 gallons and the other with a tank that holds 10 gallons. They both have the same horsepower, but one can drive twice as far as the other before the tank is empty.


Now, if you can slip 3 of the thin ones in a slot meant for 2, you'd get 9 volts instead of six, which would boost flashlight power. But if you risk burning out the bulb/LED.

[UTUSN]

14. O.K., your last sentence clinched it for me, totally. Thanks.

"Now, if you can slip 3 of the thin ones in a slot meant for 2, you'd get 9 volts instead of six, which would boost flashlight power. But if you risk burning out the bulb/LED."

[saras]

17. Basically it doesn't matter. Size, maximum current, lifetime, total charge.

They can be freely swapped except for the fact that they are all different sizes physically.

This isn't true with ALL batteries, but with the little lithium cells there aren't any jobs so heavy a too-small battery won't work, they just won't last as long. Right now I have a laser pointer and a guitar tuner running on the "wrong" lithium cells and a ball of tinfoil to take up the space. The laser pointer eats tiny batteries really fast. The guitar tuner doesn't care - it draws microamps and will run until the battery dies of old age.

It MIGHT be possible to fry a laser pointer, or other LED lights, with batteries MUCH bigger than they are designed for if they include the battery resistance as part of the design. But it isn't likely.

[dimbear]

18. Did you ever wonder why cell phones don't work in New York City?

It's because the Bronx is up and the Battery's down.