[Milsurplus] Batteries for dynamotor use ?

[Richard Solomon]

I had a 28 vdc 20 amp switcher that
I used to run the Dyno in an old radio.

It was fun listening to it rev up as
the switcher ran the voltage up and
down until the Dyno got up to speed.

Never seemed to harm anything.

73, Dick, W1KSZ

On Sat, Nov 25, 2017 at 2:29 PM, Mike Durff via Milsurplus <
milsurplus at mailman.qth.net> wrote:

> What types of batteries are you guys using to power your dynamotors? I
> have a nice set of Power-Sonic 210AH 12VDC AGM.. But sadly, they are
> nearing the end of their life expectancy (10 yrs)...  and cost a small
> fortune to replace.
>
> I only have one dynamotor, for my ATD. Last I remember, I think it was
> about 44 amps in-rush at start up. Don't remember what the key down current
> draw is.
>
> Best to just buy some cheap and dirty automotive batteries and replace
> them every few years?
>
> Thanks, Durff, K4TQF
>
>
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