On Wed, 15 Nov 2017 20:07:00 -0800, mike wrote:

On 11/15/2017 7:56 PM, Jeff Liebermann wrote:

Or you can get the ones not specified as battery extenders
https://www.ebay.com/itm/N35Super-Strong-Round-Disc-10x1mm-10x2mm-Magnets-Rare-Earth-Neodymium-N35/361874792648
for 3-cents each in hundreds.

Nice price. However, 10mm wide is MUCH too large for a button top
replacement. The eBay offering did not mention the size, but
measuring the one's I'm using produced:
6mm diameter x 0.84 mm thick.

Measuring the normal size of the stock button top on a typical 18650
cell, I get:
6mm diameter at the base x 2.5 mm thick.

click the size selector on that page.

Thanks. I missed that. Looks like 6mm x 1mm is available very cheap.
1pc for $1.08 and 100 pcs for $2.99.
I just ordered 100 each of 6mm dia x 1mm and 2mm thick magnets. Total
price was $7.01 (which was about what I paid for 10 magnets from the
previous vendor).

I managed to lose the magnet that I was measuring. It's probably
stuck to something on my desk, but I can't find it. Grumble.



--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558