If all you want to run is a dual bander, as long as you're not running high 
power and transmitting full time all day long, a car jump pack will probably 
work fine. I've run full 4 hour drills on one here, including HF of course, 
didn't cut anything back and still had plenty of power left at the end of 
it. Right now I have an alarm battery that was replaced due to a policy of 
replacing them every 2 years, it looks like the same battery as in the jump 
pack and again, it seems to run everything a while. If I was just going to 
run a UHF/VHF radio, and if I was going to mid power, it would run it all 
day pretty easy. It might even do high power when you figure how little you 
actually transmit in a situation where you might really need it.
----- Original Message ----- 
From: "KK4AHX Darren Duff" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, December 13, 2012 7:24 PM
Subject: Backup battery for fixed station.


> Hi all.
>
> Now that I have my fixed station set up like I want I need a battery 
> backup
> but I am not sure what to go with. I want something that could last me at
> least all day..... What are others using and what do you recommend for use
> with the TMV71a. I have a flow charger that I got from someone new still 
> in
> the box, but I do not know how it works, or how to hook it up once I get a
> battery.
>
>
>
> 73.
> Darren Duff.
> amateur radio station KK4AHX.
>
> Vice President,
> Cherokee Amateur Radio Society.
> http://www.cherokeehams.com
>
> Cherokee County ARES.
> http://www.cherokee-ares.org
>