can an 10180 replace a stack of LR44s?

Illum

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Will it be too wide or too long?

Seems like from a voltage standpoint it will fit. I have a friend who is a cat owner. Being in an apartment/studio kinda home the poor cats primary exercise is prescribed using a red keychain laser. Long story short, buying LR44s was getting to be a pain, and wants rechargeable without needing to buy a longer laser to use 2AAAs. [I don't understand the mentality, I'm just the messenger]. I think it might fit, but I am not sure. :ohgeez:
 

Timothybil

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An LR44 is 11.6mm x 5.4mm, or a 11/540/12540, depending on how one interprets the diameter. Either way, three 10180 cells should fit, as long as they don't shift out of alignment. How many LR44s are used now? Keep in mind that an LR44 is 1.5v, as opposed to 3.7 for a 10180. So three 10180 cells would definitely be way too much voltage - you would need to figure out some sort of dummy cell to take up space.
 

snakebite

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1 10180= 3 lr44 in most devices that run them stacked.
a cheap laser/flashlight may depend on the higher internal resistance of lr44 for current limiting.
otherwise they work fine if you can adjust contacts in some devices.
10180 is usually close enough.
An LR44 is 11.6mm x 5.4mm, or a 11/540/12540, depending on how one interprets the diameter. Either way, three 10180 cells should fit, as long as they don't shift out of alignment. How many LR44s are used now? Keep in mind that an LR44 is 1.5v, as opposed to 3.7 for a 10180. So three 10180 cells would definitely be way too much voltage - you would need to figure out some sort of dummy cell to take up space.
 
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kreisl

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I use 1 10180 instead of 3 lr44 in one of my keychain flashlights. Works great!
 

iamlucky13

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An LR44 is 11.6mm x 5.4mm, or a 11/540/12540, depending on how one interprets the diameter. Either way, three 10180 cells should fit, as long as they don't shift out of alignment. How many LR44s are used now? Keep in mind that an LR44 is 1.5v, as opposed to 3.7 for a 10180. So three 10180 cells would definitely be way too much voltage - you would need to figure out some sort of dummy cell to take up space.

Three LR44's would be 16.2mm long - pretty close to the 18mm length of a 10180.

But for a casual user not used to managing lithium ion batteries, I'm not inclined to recommend an unprotected lithium-ion battery. Also, the point about the laser possibly depending on the poor current output of LR44's is potentially apt.
 

Illum

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AHow many LR44s are used now?

several, and today I found out the LR44s have been bought in stores, one cell at a time. :crazy:


an end user with no experience in this sort of chemistry has me wary as well. I'm happy to know it will work but by the way it looks recommending the cells bought online seems the only real safeguard from an user error explosion:green::green:
 
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Timothybil

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several, and today I found out the LR44s have been bought in stores, one cell at a time. :crazy: an end user with no experience in this sort of chemistry has me wary as well. I'm happy to know it will work but by the way it looks recommending the cells bought online seems the only real safeguard from an user error explosion:green::green:
I have purchased LR44s for a electronic micrometer I have. I found that I can purchase six to ten in bulk on line for usually less than buying a single cell, even on line. For something this size and cost, the overhead of purchasing, warehousing, and shipping has a much greater impact on the final cost than the cost of the cell(s) them selves.
 
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