SHOW NOTES https://www.amazon.com/Epoch-X4-Touch-Lithium-Battery/dp/B09NTM76TJ/ https://www.amazon.com/Universal-Analyzer-Rechargeable-Batteries-BT-C3400/dp/B07T941JCF/ref=sr_1_2?crid=39CH5S4V12D0M& https://tubecad.com/ http://www.westmountainradio.com/cba.php https://www.amazon.com/Universal-Analyzer-Rechargeable-Batteries-BT-C3400/dp/B07T941JCF INA260 - Current meter: https://www.adafruit.com/product/4226 Double Self-locking Aluminium Alloy CNC Four-wire Battery Holder Fixture BF-2A 18650 AA AAA https://www.aliexpress.us/item/2251832789373756.htmlgatewayAdapt=glo2usa4itemAdapt&_randl_shipto=US kWeld – complete kit https://www.keenlab.de/index.php/product/kweld-complete-kit/ kCap ultracapacitor module https://www.keenlab.de/index.php/product/kweld-ultracapacitor-module/ kSupply high current voltage regulator and charger https://www.keenlab.de/index.php/product/ksupply/ https://www.amazon.com/Epoch-X4-Touch-Lithium-Battery/dp/B09NTM76TJ/ https://www.amazon.com/Universal-Analyzer-Rechargeable-Batteries-BT-C3400/dp/B07T941JCF/ref=sr_1_2?crid=39CH5S4V12D0M& https://tubecad.com/ http://www.westmountainradio.com/cba.php https://www.amazon.com/Universal-Analyzer-Rechargeable-Batteries-BT-C3400/dp/B07T941JCF
14 Comments
Roy WN3F
3/7/2023 12:24:30
kWeld spot welder
Mike K4FBI
3/7/2023 17:20:06
Fantastic and informative episode. Thank you.
Ne9n Dave
3/8/2023 20:42:16
As a battery engineer/ BMS designer I liked the episode. Would be interested in the supply for the Kweld, I use a car battery for mine and not real happy with that setup.
Rick - KC6UFT
3/19/2023 22:12:05
I purchased and tried (3) used HP power supplies. Not one of them worked. I finally found (and purchased) a NEW unused version of the same supply from "compu-smart" on ebay and it worked. I combined the server supply with the PSU kit from kWeld.
Dave Siegler
3/25/2023 18:38:27
So the server supply is enough with that regulator? It was my understanding the current was a lot higher, and you needed to charge some energy storage in a large cap bank or have a high C lipo as a source. The Server supplies can hold the voltage up during a weld? If its only 70 a car battery will work just fine.
Rick (KC6UFT)
3/25/2023 18:59:23
Hi Dave. You are correct. I use the HP server supply as the PSU, the kSupply with that server, the kCap Ultracapacitor module, and finally the kWeld. I was not able to easily charge the KCap with any of the regular Power supplies that I had on hand. The ultra capacitor is basically a dead short when starting up cold.
Tom Salzer
3/10/2023 18:01:50
Learned a ton on a topic I didn't realize I needed to know more about. Well done.
stephen provost
3/10/2023 23:17:14
Please add me to the list when the Arduino test kit is available to order and when the battery tester is available to order thanks Stephen
Rick - KC6UFT
3/19/2023 22:21:55
Delighted that you enjoyed the project. I will let post here as soon as I revise the board design to fix a bug that requires a wire bodge on the back.. Still working on tweaks before I iterate on the next PCB. Please stay tuned. V/R Rick (KC6UFT)
Rick - KC6UFT
3/31/2024 14:18:26
Hello Steven, I finally dug in and did the board spin. The new board is working well. I have changed the design to support (4) wire measurements and easily swapping the load resistors. I hope that we'll be doing a follow up HRWB on this topic.
Alan VK3TCP
3/13/2023 01:44:17
The two things I heard that I came to the notes to look for:
Rick - KC6UFT
3/19/2023 22:00:42
I purchased and used the INA260 from Adafruit.
Richard England
3/24/2023 22:17:42
Thank you!! 4/4/2023 07:52:08
I got into 18650s when i first started in ham radio. I actually built a couple of test boards to charge/discharge/and collect data from harvested 18650s. https://www.vortexit.co.nz/arduino-8x-charger-discharger/ you can even have a database of your cells and it will let you know which ones are best to build a pack with. Leave a Reply. |
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