Schematic?

[fcpr...@gmail.com]

Chris, I'm aware that your preliminary schematic is here:

https://03062759966014323106.googlegroups.com/attach/2f7bbf038caae/nanoKenbak-1.pdf but I know that you now use a DPDT switch, and there may be other changes.

Do you have a final schematic you could post or simply put a link to it on your nano page.

[famousd...@gmail.com]

Well, I'm not so good at keeping versions, but this is probably the version you have.

[Vicente González]

My nanoKENBAK works fine. The only problem I noticed was that although the device charges OK, the GREEN LED never lit up.

Thanks to the schematic I was motivated to review and see the problem. R30 was 22k instead of 2.2k.

Good opportunity to try my new "Hot Tweezers Mini Welding Station" :-)

Virus-free. www.avast.com

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[famousd...@gmail.com]

I'd switch that back.  The "2.2k" on the schematic is a misprint.  It's supposed to be 22k.  That sets the charge mA.  With a 2.2k resistor you've got it set to 400mA, which is far too much for an LIR2032.