Running 6600 off battery

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  • Updated 1 year ago
New 6600 owner. Looked thru archives and didn't readliy find anything.
Have a 12v 100ah AGM battery in my shack that I use for emergency/backup power. It's wired in thru a battery switch to my DC power strip. I'm a former K3 user and the K3 ran fine off this battery ( K3 rqmts  11-15v/ 22A max) . So the manual for the 6600 says
"13.8 VDC @ 25 amps .  Any voltage deviation from 13.8 VDC will result in lower power output that the 100W nominal specification."
--- So wondering if anyone has had any experience running a 6600 off a battery similar to mine. Is there any potential harm to the 6600 running off a battery at ~12.5-12.6v??

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Posted 1 year ago

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Mack McCormick, Elmer

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It will work fine from your battery and will not harm the radio if the voltage drops too much. You may get a few watts less output power.


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Mack - thanks for reply and information. Just wanted to be sure

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Michael Walker, Employee

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Official Response
When the voltage drops too low, the radio will shutdown.  If the voltage rises, it might then try to reboot.
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Stan - VA7NF

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The radio runs much better when directly connected to the battery.
  • I use #8 with an inline marine breaker then to a 70A power pole connector to a 70A to 4X45A adapter plug, then #10 (45A power poles) to the rig.
  • The battery maintains better than 14V and surge currents do not matter as the power supply loafs along supplying a steady charge current, normally well under 10A
  • When off battery I have a 70A power pole on a 35A switching power supply that matches the distribution 70A-4x45A PP plug