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Should you leave the battery pack installed when not in use?

 

Hi Folks

I have an FT817ND with the upgraded battery pack (SBR-32MH 1900Mah), which I use /P but normally with an external Li On battery pack.? I know that there has been much discussion about voltage leakage when the radio is stored unused but I want to ask a simple question.? When the radio is being stored say for a few weeks should the battery pack be removed, or is it ok to just leave it and then charged before next use?? My radio has the 3D printed PowerPole adapter installed and is usually used for LEO operations but now the weather is colder I wont be heading out as much!

Thanks

73, Paul 2E0PJY
S1mpleton
 

I personally remove if storing for more than 2 weeks.

At 1 point I needed it and it had leaked to zero.

I could only get it to power and charge by installing the alkaline pack to reboot it.


Scott A Fosgate
 

I leave it in the radio, but I unplug it when I'm not using it.

Zack W9SZ


On Tue, Nov 29, 2022 at 5:15 AM S1mpleton <sfosgate@...> wrote:
I personally remove if storing for more than 2 weeks.

At 1 point I needed it and it had leaked to zero.

I could only get it to power and charge by installing the alkaline pack to reboot it.


Scott A Fosgate
 

On Tue, Nov 29, 2022 at 11:28 PM, 2E0PJY wrote:
I have an FT817ND with the upgraded battery pack (SBR-32MH 1900Mah), which I use /P but normally with an external Li On battery pack.? ...? is it ok to just leave it and then charged before next use?? My radio has the ... PowerPole adapter installed ...
You need to add a resistor in the PP adaptor to guarantee that the radio knows it is not connected to external power. If the radio thinks it is on external power, the CPU stays running to keep the serial port alive.
On the '817ND they mostly are OK, (when it is cold), but the '818's frequently are not.

After that, yes it should be OK to leave the batteries in.
(btw, Yaesu power adaptors had this resistor AFAIK, so this is not a Yaesu design fault)

see?/g/ft817/files/ZL1THH/FT817-BatteryCircuits.pdf
 

Thanks everyone, I think I'll remove it and stick to using my sealed lead acid battery for now.

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