Oncore UT+ Battery Backup
My UT+ unit does not have the onboard battery. In looking at the various manuals, I see that the battery backup voltage is from +2.5 to +5.25V. So, should I grab a 3V lithium cell and mount off an old motherboard, or should I use a pair of AA batteries in a holder I think I have around here "somewhere"? Or is it just whatever comes to hand is fine? I think the drain is only micro-amps.
Bob - AE6RV
I do believe the UT+ will try to charge the battery while on, so some sort of rechargeable lithium cell is in order.
-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Bob Stewart
Sent: Thursday, 27 June 2013 2:11 PM
To: Time Nuts
Subject: [time-nuts] Oncore UT+ Battery Backup
My UT+ unit does not have the onboard battery. In looking at the various manuals, I see that the battery backup voltage is from +2.5 to +5.25V. So, should I grab a 3V lithium cell and mount off an old motherboard, or should I use a pair of AA batteries in a holder I think I have around here "somewhere"? Or is it just whatever comes to hand is fine? I think the drain is only micro-amps.
Bob - AE6RV
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Le 27 juin 2013 à 07:04, Mark C. Stephens a écrit :
I do believe the UT+ will try to charge the battery while on, so some sort of rechargeable lithium cell is in order.
Yes, you need to connect our battery via Pin1if not using a rechargeable on board.
-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Bob Stewart
Sent: Thursday, 27 June 2013 2:11 PM
To: Time Nuts
Subject: [time-nuts] Oncore UT+ Battery Backup
My UT+ unit does not have the onboard battery. In looking at the various manuals, I see that the battery backup voltage is from +2.5 to +5.25V. So, should I grab a 3V lithium cell and mount off an old motherboard, or should I use a pair of AA batteries in a holder I think I have around here "somewhere"? Or is it just whatever comes to hand is fine? I think the drain is only micro-amps.
Bob - AE6RV
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As a side note, I'd use lithiums rather than AA's
(alkaline) purely because they don't tend to leak corrosive electrolyte all over your expensive electronics if (when) you forget to change them. Lithiums have a longer shelf life too.
From: mike cook mc235960@gmail.com
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Thursday, 27 June 2013, 6:28
Subject: Re: [time-nuts] Oncore UT+ Battery Backup
Le 27 juin 2013 à 07:04, Mark C. Stephens a écrit :
I do believe the UT+ will try to charge the battery while on, so some sort of rechargeable lithium cell is in order.
Yes, you need to connect our battery via Pin1if not using a rechargeable on board.
-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Bob Stewart
Sent: Thursday, 27 June 2013 2:11 PM
To: Time Nuts
Subject: [time-nuts] Oncore UT+ Battery Backup
My UT+ unit does not have the onboard battery. In looking at the various manuals, I see that the battery backup voltage is from +2.5 to +5.25V. So, should I grab a 3V lithium cell and mount off an old motherboard, or should I use a pair of AA batteries in a holder I think I have around here "somewhere"? Or is it just whatever comes to hand is fine? I think the drain is only micro-amps.
Bob - AE6RV
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and follow the instructions there.
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To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
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I had a dead PC motherboard and unsoldered a coin battery holder and the
battery. The backup battery's shelf life is the limiting factor so the
little coin battery will outlast the AA cell. The battery only backs up
the memory and there is not much of a load on it, the self-discharge load
is likely higher for the alkaline cell.
On Wed, Jun 26, 2013 at 9:10 PM, Bob Stewart bob@evoria.net wrote:
My UT+ unit does not have the onboard battery. In looking at the various
manuals, I see that the battery backup voltage is from +2.5 to +5.25V. So,
should I grab a 3V lithium cell and mount off an old motherboard, or should
I use a pair of AA batteries in a holder I think I have around here
"somewhere"? Or is it just whatever comes to hand is fine? I think the
drain is only micro-amps.
Bob - AE6RV
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
--
Chris Albertson
Redondo Beach, California