ronburnett(at)charter.net
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 Posted: Mon Oct 19, 2015 3:05 pm Post subject: Radio battery voltage? |
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Thanks to all for explaining my battery challenge. I have followed the suggestion of keeping the backup battery in the glove box.
Ron Burnett
Sent from my iPad
May you have the blessings of the Lord today.
| Quote: | On Sep 14, 2015, at 9:05 PM, Charlie England <ceengland7(at)gmail.com> wrote:
> On 9/14/2015 7:53 PM, Ron Burnett wrote:
>
>
> I have a Luscombe and use an ICOM radio/VOR on a Quantum rechargeable battery. On the radio I also use a 10 cell AA attached battery which measures 16 volts with new cells in it.
>
> My question is does this high battery voltage "trump" my 12.6 rechargeable? It seems to as my batteries keep needing to be replaced and I rarely need to charge the rechargeable.
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> Inquiring minds want to know.
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> Thanks,
>
> Ron Burnett N1131B Luscombe 8A
> N524RB RV-6A
Are you saying that you're using an Icom portable, with a 10 cell internal battery pack, and you're supplying 12V to the same portable through its external power jack?
If so, then 'it depends'. Some portables will charge the internal pack from the external power jack; some won't. But 12V won't charge a 16V battery pack, in any case. Some portables actually disconnect the internal battery pack when powered off the external power jack.
Why not simply remove the battery pack & run off the 12V battery. If you lose the battery, reinstall the internal pack.
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