1. Internals are drawn on when the external voltage sags too low.  You will deplete your external “SLAB” or other battery but not before killing the AA set in the radio.
  2. The FT-817 finals are always on, best to disconnect the source.


  1. Place something non-conductive between one cell to break the (8S) circuit.  Remove in case of emergency.  I’ve used a miniature playing card.

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