Elecraft

Battery pack not powering K2

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Robin Kiszka

Battery pack not powering K2

Hi,

I hope someone can help me here. I have K2 with the internal battery kit.

I have used this radio with the battery for many years, but now I have a problem.

When I power up the radio with only the battery it is dead, no display nothing.

When I apply a PSU it works fine.

I have checked all the connections P3 (Aux) and the Int. Battery switch on the back panel is ON.

Anyway, nothing has changed since it last worked.

When I check the voltage on the battery terminals it says 10.5V. I get the same reading on the P3 connector, so power is reaching the radio, but the radio is not powering up.

Any suggestions?

Thanks

Robin

OZ6ABM/5P5R

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Ingo Meyer, DK3RED-2

Re: Battery pack not powering K2

Hello Robin,

> I hope someone can help me here. I have K2 with the internal battery kit.
...
> When I check the voltage on the battery terminals it says 10.5V. I get the same reading on the P3 connector, so power is reaching the radio, but the radio is not powering up.

I had the same problem a few years ago. Charging with an external charger seemed to work.
But the transceiver switched off very quickly, even though there was still enough voltage.
Finally, after 10 or 11 years of use, I exchanged the battery for a new one and everything
was fine again. Knowledge: Lead batteries don't live forever.

73/72 de Ingo, DK3RED - Don't forget: the fun is the power!
www.qrp4fun.de - [hidden email]
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pa0pje

Re: Battery pack not powering K2

In reply to this post by Robin Kiszka

Hello Robin,

10,5 Volts is very low for a 12 V.lead-acid battery. Try to load it with
a lamp or resistor and measure the voltage at the battery again under
load condition. I doubt that all cells in the battery are good. The gel
in these batteries can dry out, which is killing them.

There is also a series diode in the supply-line to prevent damage due to
reverse connection of a power supply that at least has a voltage drop of
0,2 volts. I don't recall on what voltage the K2 will cease to work.

73,
Peter - PA0PJE

Op 10-11-19 om 12:56 schreef [hidden email]:

> Hi,
>
>
>
> I hope someone can help me here. I have K2 with the internal battery kit.
>
> I have used this radio with the battery for many years, but now I have a problem.
>
> When I power up the radio with only the battery it is dead, no display nothing.
>
> When I apply a PSU it works fine.
>
> I have checked all the connections P3 (Aux) and the Int. Battery switch on the back panel is ON.
>
> Anyway, nothing has changed since it last worked.
>
> When I check the voltage on the battery terminals it says 10.5V. I get the same reading on the P3 connector, so power is reaching the radio, but the radio is not powering up.
>
>
>
> Any suggestions?
>
>
>
> Thanks
>
> Robin
>
> OZ6ABM/5P5R
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

______________________________________________________________
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ke9uw

Re: Battery pack not powering K2

In reply to this post by Robin Kiszka

I had my first battery last about 5 years until it wouldn't turn on the radio. It started to leak on one corner, so I was glad to get it out of there before it got on anything. Do you measure the voltage when the K2 switch is turned on? Mine was about 3 volts when the rig was turned on, but obviously dark.

Chuck Hawley
[hidden email]

Amateur Radio, KE9UW
aka Jack, BMW Motorcycles

________________________________
From: [hidden email] <[hidden email]> on behalf of [hidden email] <[hidden email]>
Sent: Sunday, November 10, 2019 5:56 AM
To: [hidden email] <[hidden email]>
Subject: [Elecraft] Battery pack not powering K2

Hi,

I hope someone can help me here. I have K2 with the internal battery kit.

I have used this radio with the battery for many years, but now I have a problem.

When I power up the radio with only the battery it is dead, no display nothing.

When I apply a PSU it works fine.

I have checked all the connections P3 (Aux) and the Int. Battery switch on the back panel is ON.

Anyway, nothing has changed since it last worked.

When I check the voltage on the battery terminals it says 10.5V. I get the same reading on the P3 connector, so power is reaching the radio, but the radio is not powering up.

Any suggestions?

Thanks

Robin

OZ6ABM/5P5R

______________________________________________________________
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Post: mailto:[hidden email]

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Please help support this email list: http://www.qsl.net/donate.html
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Post: mailto:[hidden email]

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Chuck, KE9UW

Frank Krozel

Re: Battery pack not powering K2

Mine is missing the battery, I was told it is a
Powersonic PS-1229 for my K2

Is that true?

-73- Frank KG9H
[hidden email]

> On Nov 10, 2019, at 8:22 AM, hawley, charles j jr <[hidden email]> wrote:
>
> I had my first battery last about 5 years until it wouldn't turn on the radio. It started to leak on one corner, so I was glad to get it out of there before it got on anything. Do you measure the voltage when the K2 switch is turned on? Mine was about 3 volts when the rig was turned on, but obviously dark.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Chuck Hawley
> [hidden email]
>
> Amateur Radio, KE9UW
> aka Jack, BMW Motorcycles
>
> ________________________________
> From: [hidden email] <[hidden email]> on behalf of [hidden email] <[hidden email]>
> Sent: Sunday, November 10, 2019 5:56 AM
> To: [hidden email] <[hidden email]>
> Subject: [Elecraft] Battery pack not powering K2
>
> Hi,
>
>
>
> I hope someone can help me here. I have K2 with the internal battery kit.
>
> I have used this radio with the battery for many years, but now I have a problem.
>
> When I power up the radio with only the battery it is dead, no display nothing.
>
> When I apply a PSU it works fine.
>
> I have checked all the connections P3 (Aux) and the Int. Battery switch on the back panel is ON.
>
> Anyway, nothing has changed since it last worked.
>
> When I check the voltage on the battery terminals it says 10.5V. I get the same reading on the P3 connector, so power is reaching the radio, but the radio is not powering up.
>
>
>
> Any suggestions?
>
>
>
> Thanks
>
> Robin
>
> OZ6ABM/5P5R
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Don Wilhelm

Re: Battery pack not powering K2

Frank,

Yes, that is the battery supplied by Elecraft.
If you do not have the battery installed, you may also be missing the
thin foam strip that is to go between the battery and the bracket.
Nothing really special, and if you have some of that material on hand,
just cut it the size of the battery. The foam pad makes the battery a
bit more secure when installed in the bracket (i.e no rattling).

73,
Don W3FPR

On 11/10/2019 1:15 PM, Frank Krozel wrote:
> Mine is missing the battery, I was told it is a
> Powersonic PS-1229 for my K2
>
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Robin Kiszka

Re: Battery pack not powering K2

Thanks for the good advice. I have now seen the voltage drops to 2.3 V on the battery when the K2 is powered on, even though it's close to 11 V charged.
So I have ordered a new battery and will see if that resolves it.

73
Robin

-----Original Message-----
From: Don Wilhelm <[hidden email]>
Sent: Sunday, 10 November 2019 19.24
To: Frank Krozel <[hidden email]>; hawley, charles j jr <[hidden email]>
Cc: [hidden email]; [hidden email]
Subject: Re: [Elecraft] Battery pack not powering K2

Frank,

Yes, that is the battery supplied by Elecraft.
If you do not have the battery installed, you may also be missing the thin foam strip that is to go between the battery and the bracket.
Nothing really special, and if you have some of that material on hand, just cut it the size of the battery. The foam pad makes the battery a bit more secure when installed in the bracket (i.e no rattling).

73,
Don W3FPR

On 11/10/2019 1:15 PM, Frank Krozel wrote:
> Mine is missing the battery, I was told it is a Powersonic PS-1229 for
> my K2
>
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Please help support this email list: http://www.qsl.net/donate.html
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