Ham Radio Videos
• UltraPack Update FT-817 WSPR STRESS TEST DIY 18650 Battery Pack
Added at 2016-09-08 18:57:18
This is the second test video for the UltraPack DIY 4S 18650 Lithium-ion Battery Pack for man-portable & Emergency Communications. in this video we're running a 30 minute long stress test on the Yaesu FT-817ND
You can read about this project on SurvivalTechnology.Net
http://www.survivaltechnology.net/qrp-ultrapack-external-battery-pack-project/