Author Topic: Ultra-thin battery?  (Read 1394 times)

0 Members and 1 Guest are viewing this topic.

Offline jeduffyTopic starter

  • Contributor
  • Posts: 17
  • Country: us
Ultra-thin battery?
« on: December 21, 2019, 06:56:02 am »
Does anyone know where I can buy cheap, very thin (<=1mm) batteries?
I don't really need any significant density (a few mAh is fine).  I've found a few places that make them, but no one that sells them for reasonable prices or in small quantity.

Application is I'm applying for jobs the next couple months and looking to make some circuit board business cards.
(can't do USB power, most companies don't allow plugging in unknown USB devices)
 

Offline sleemanj

  • Super Contributor
  • ***
  • Posts: 3051
  • Country: nz
  • Professional tightwad.
    • The electronics hobby components I sell.
Re: Ultra-thin battery?
« Reply #1 on: December 21, 2019, 09:15:45 am »
A cr2012 or 2016 sunken into a routed out hole of your pcb with a flat strip soldered across the bottom and a formed sort of strip soldered on top to apply contact pressure could work?

NB: You might need to think about shipping issues if you intend to mail these cards, certainly no li-ion.
~~~
EEVBlog Members - get yourself 10% discount off all my electronic components for sale just use the Buy Direct links and use Coupon Code "eevblog" during checkout.  Shipping from New Zealand, international orders welcome :-)
 

Offline rvalente

  • Frequent Contributor
  • **
  • Posts: 736
  • Country: br
Re: Ultra-thin battery?
« Reply #2 on: December 21, 2019, 09:43:00 am »
 

Offline I wanted a rude username

  • Frequent Contributor
  • **
  • Posts: 662
  • Country: au
  • ... but this username is also acceptable.
Re: Ultra-thin battery?
« Reply #3 on: December 21, 2019, 09:46:47 am »
A cr2012 or 2016 sunken into a routed out hole of your pcb with a flat strip soldered across the bottom and a formed sort of strip soldered on top to apply contact pressure could work?

And you can get CR1616/CR2016 cells with surface-mount solder tabs to make assembly even easier. The canonical example being the original Arduboy.

 

Offline SiliconWizard

  • Super Contributor
  • ***
  • Posts: 15797
  • Country: fr
Re: Ultra-thin battery?
« Reply #4 on: December 22, 2019, 04:34:55 pm »
Rechargeable or primary? (I suppose the latter?)

 

Offline SiliconWizard

  • Super Contributor
  • ***
  • Posts: 15797
  • Country: fr
Re: Ultra-thin battery?
« Reply #5 on: December 30, 2019, 06:34:03 pm »
Alright, the OP never bothered to answer/follow-up, but since I have some pointers, I may as well list them, if it can be useful to anyone...

Primary batteries:
https://www.powerstream.com/thin-primary-lithium.htm

Primary and rechargeable:
https://www.pdbattery.com/ultra-thin-battery.html

A few years ago, "solid-state" batteries started to appear, but most seem abandoned now, so I'm guessing either the technology or the market wasn't quite there...
STM EFL700A39
THINERGY MEC201
 

Offline Nusa

  • Super Contributor
  • ***
  • Posts: 2418
  • Country: us
Re: Ultra-thin battery?
« Reply #6 on: December 30, 2019, 06:56:06 pm »
Another option is forget about batteries entirely and use a thin solar cell. Plenty of credit-card calculators do exactly that.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf