Hi Dave - I use one of those Chicom 12-24 volt (20 amp version) "converters", probably the same one you showed but they seem to change manufacturers' names at random...I use it to power the PRC-47 in the truck from the 12V batt and so far it works well, Lo and Hi power selected.  Another powers my PRC-174 in the house off the solar battery system.

I would suggest you run your test again but with a representative load on the converter as a better test.

FYI, Tim

N6CC

On Mon, Mar 9, 2026 at 4:03 PM KD2GIY via MRCA <mrca@mailman.qth.net> wrote:

Riddle me this! 

Is this a good idea? 

Is it a bad idea? 

Here's a video I made just for the group regarding battery upgrade for the prc-70 

https://youtu.be/wEtL9BdqFq0?si=EfwYhqGUPKWfkUWJ

Best regards
Dave
KD2GIY

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