I'm running a TS-7400 on a 12V 60AH deep-discharge marine cell with a 15-watt
solar panel. That's barely enough to keep it running in the summer, though.
Really need a 60-watt panel to keep it up through the winter. Using a
TDK/Lambda CC6-1205SF-E switching regulator to get the 5V needed. Current
requirement at 5V is about 600mA because of the cell data modem we're using. Am
monitoring both battery voltage and current. Currently, after about a week on
this battery, it's down to 11.84V. Will go replace it with a fully-charged
battery some time today.
________________________________________
From: on behalf of Robert
Sent: Monday, May 23, 2011 12:29 PM
To:
Subject: [ts-7000] Re: TS-7800 running on battery
Jaan,
Thanks for the feedback. I got my TS7800 with the TS-781 option. What kind of
uptime did you get from your lead battery setup?
--- In "Jaan" <> wrote:
>
>
>
> Hi Robert,
>
> Yes, I've run TS-7800 from several different 12 V sealed lead-acid batteries
> (from 7 Ah to 70+ Ah). With option TS-781 of course, the small 8...30V to 5V
> converter. Then you don't have to add anything to monitor battery voltage
> (TS-781 input voltage it is directly attached to one of the ADCs with 1/9
> voltage divider).
>
> But no experience with a solar panel. Should be easy to make a simple
> charging system which does not need the controlling opportunities of TS-7800.
> With a lead-acid battery and a solar panel mixed system, the only thing you
> should need (for a 12 volt battery) is a small system with 13.6...13.8 volt
> voltage limit for float charging.
>
> It should be equally easy to use a 6 volt lead-acid battery with the 5 volt
> power system (that means, if you don't have the TS-781). You certainly need
> to add 2...3 silicon diodes in series (type 1N4007 for example) between
> battery (+) and TS-7800 (+), or else, something on the TS-7800 may burn. To
> charge the battery with float charging, you need a voltage limit of 6.8...6.9
> volts. For full (cyclic) charging, the 2...3 silicon diodes are not good
> enough for protection, because the voltage of a 3-cell sealed lead-acid
> battery may go up to 7.5 volts (sometimes more), and then you need a good 5
> volt voltage converter with a low drop, in the place of the diodes.
>
> I've also used four NiMH AA-size batteries in series (about 4.8 volts) to
> power the TS-7800, but it was a temporary solution because the batteries
> won't probably last over an hour (the current consumption is up to 1 amp).
>
> I haven't tried lithium (Li-ion, LiPo) based technologies.
>
> Jaan
>
> --- In "Robert" <robace_22@> wrote:
> >
> > has anyone run a ts7800 on batteries (vs. the wall mount)? has anyone tried
> > using a solar panel?
> >
>
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