[Kenwood] Emergency Batteries

[Ron]

If you get both as the same Amp Hour rating , all should be OK.

I am all in for buying things on the cheap......that what we hams do!

By the time one goes into reverse, you either have less than 8 volts or 
less than 6 volts and by then , it pretty obvious with really dim lights 
that the pack is dead and needs to be charged.
---
Ron


Philip, KO6BB wrote:

> Don et al,
>
> This may NOT be such a good idea.  For many years I've run all my 12 
> Volt radio gear on 3 12 Volt deep cycle batteries in parallel (gives 
> me roughly 315 Amp hours reserve) that are kept on constant float 
> charge by an Astron VS-50M power supply (I could get by with a smaller 
> supply, but I have it). To keep a 12 Volt deep cycle battery fully 
> charged it needs to be "floated" at approximately 13.6 Volts with an 
> occasional "bump" above that to keep things stirred up.  If you had an 
> 8 Volt and 6 Volt battery in series (14 Volts), the same combination 
> would need to be charged with a supply of approximately 15.9 VDC, 
> quite possibly damaging the radio equipment that is connected 
> (electrolytic capacitors in mobile equip etc. is often rated at about 
> 16 Volts).
>
> Also, if the Amp hour rating of the two series batteries aren't equal, 
> as they approach discharge it is 'possible' to put a (probably slight) 
> reverse polarity across the lower voltage battery and that certainly 
> isn't going to do it any good.
>
> 73 de Phil  KO6BB
>
>> Also, I noticed they had 8 volt and 6 volt deep
>> cycle batteries. I plan to get one of each and
>> put them in series for a station back up battery.
>> This may be much better than a 12 volt deep
>> cycle battery. Most radios work better at 13.0 V
>> than they do at 11.0 volts.
>> Healthfully yours,
>
>                          Don W4BWS
>
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