DIY Yaesu FT-817ND 48wh Battery Pack – UltraPack SMOKE TEST


This is the first video for the UltraPack DIY 4S 18660 Lithium-ion Battery Pack for Emergency Communications. in this video we're going to do the voltage and …
DIY Yaesu FT-817ND 48wh Battery Pack - UltraPack  SMOKE TEST