General Asylum

General audio topics that don't fit into specific categories.

Return to General Asylum

Message Sort: Post Order or Asylum Reverse Threaded

Devices using many CR2032s

113.89.232.249
Posted on June 6, 2017 at 23:12:16
makiyang614@gmail.com
Audiophile

Posts: 6
Joined: June 6, 2017




Hi

I wonder if it's common for a 3V device to use 3 or more CR2032s to achieve greater capacity. For instance, 4x CR2032s (parallel) can help a device achieve thinner profile than a CR123A can. Are there technical limitations in using so many CR2032s to increase capacity by 4x?

The most I've seen is 2x CR2032 in series, used in this.

Any thought appreciated.
It is Panasonic-BSG.

 

Hide full thread outline!
    ...
RE: Devices using many CR2032s, posted on June 7, 2017 at 11:33:51
AbeCollins
Audiophile

Posts: 46295
Location: USA
Joined: June 22, 2001
Contributor
  Since: February 2, 2002
 I've seen CR2032 batteries in series but never in parallel. That's not to say it can't be done.

In theory one possible problem is mating batteries with identical charge. If one battery is lower than the others it will draw current from the higher charged batteries. There are ways to isolate them with diodes or FETs but now you're wasting power..... and CR2032 aren't exactly powerful to begin with.

In practice, it's probably fine for a hobby project but I'd be more cautious and do more research if it's for a consumer product where liability is a concern.




 

RE: Devices using many CR2032s, posted on June 11, 2017 at 03:34:53
Uncle Mike
 It's done all the time especially in automotive.
"I've seen CR2032 batteries in series but never in parallel. That's not to say it can't be done." Two batteries paralleled doubles the current capability, in series doubles the voltage. See link
"In theory one possible problem is mating batteries with identical charge. If one battery is lower than the others it will draw current from the higher charged batteries." Two batteries connected will equalize the charge in both. If they are not of equal voltage charge the higher charge battery will decrease to the same as the lower and vise versa. After that they will discharge at the same rate.

 

RE: Devices using many CR2032s, posted on June 13, 2017 at 10:28:00
bare
Audiophile

Posts: 1879
Joined: April 14, 2009
 Only ever seen these used either singly or in pairs.
As these are only ~ 1$ each ..experiment ?

 

Page processed in 0.028 seconds.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]